10:02:2021 14:33
PSI-MOD
1.2
Paul M. Thomas
Annotation note 01 - "[PSI-MOD:ref]" has been replaced by PubMed:18688235.
Annotation note 02 - When an entry in the RESID Database is annotated with different sources because the same modification can arise from different encoded amino acids, then the PSI-MOD definition for each different source instance carries the RESID cross-reference followed by a hash symbol "#" and a 3 or 4 character label. When an entry in the RESID Database is annotated as a general modification with the same enzymatic activity producing different chemical structures depending on natural variation in the nonproteinaceous substrate, on secondary modifications that do not change the nature of the primary modification, or on a combination of a primary and one or more secondary modifications on the same residue, then the PSI-MOD definition for each different instance carries the RESID cross-reference followed by the special tag "#var".
Annotation note 03 - When an entry in the Unimod database is annotated as a general modification, and one or more instance sites are listed, then the PSI-MOD definition for each different site instance carries the Unimod cross-reference followed by a hash symbol and an amino acid code, "N-term" or "C-term".
Annotation note 04 - The elemental formulas are in strict alphabetical order, not in CAS ("C" and "H" first) order. Isotope numbers are in parentheses before the element symbol, and an element should not occur in a formula both with and without an isotope number. In difference formulas, counts can be zero or negative.
Annotation note 05 - In entries with an isotope indicator in the formula, average masses are meaningless and are assigned the value equal to the monoisotopic mass, but rounded to a lower precision; monoisotopic masses are calculated by using the masses for the indicated isotopes and the most common isotopes for other elements without isotope indicators in the formulas.
Annotation note 06 - For cross-link modifications, the number following "Cross-link" in the comment record indicates the number of amino acid residues that appear in the origin record, used to check the difference formula and masses. This usage differs from RESID, where the cross-link number indicates the maximum number of peptide chains that can be cross-linked.
Annotation note 07 - The synonym cross-reference "MOD:old name" has been replaced by "MOD:alternate name".
Annotation note 08 - The DeltaMass listings for free amino acids have been removed. Most Unimod entries that have not been "approved" have by general agreement not been incorporated unless there has been a request for a specific term by a PRIDE submitter.
Annotation note 09 - The Open Mass Spectrometry Search Algorithm, OMSSA, enumerated list of modifications are being incorporated. The string values are synonyms with the synonymtypedef "OMSSA-label", and their integer values (which are supposed to be stable) are definition cross-references.
Annotation note 10 - GNOme is the Glycan Naming and Subsumption Ontology (https://gnome.glyomics.org/), an ontology for the support of glycomics. PSI-MOD does not have all possible glycans in its entries, just the ones that are noted to be on proteins and have been requested for addition. GNOme uses GlyTouCan (http://glytoucan.org/) to provide stable accessions for glycans described at varyious degrees of characterization, including compositions (no linkage) and topologies (no carbon bond positions or anomeric configurations).
ISO-8601 date: 2021-02-10 14:33Z
PSI-MOD version: 1.030.0
RESID release: 75.00
definition
Label from MS DeltaMass
Short label from OMSSA
Alternate name curated by PSI-MOD
Short label curated by PSI-MOD
subset of protein modifications
Agreed label from MS community
Alternate name from RESID
Misnomer tagged alternate name from RESID
Name from RESID
Systematic name from RESID
Protein feature description from UniProtKB
Alternate name from Unimod
Description (full_name) from Unimod
Interim label from Unimod
subset_property
synonym_type_property
database_cross_reference
has_exact_synonym
has_obo_format_version
has_obo_namespace
has_related_synonym
has_scope
has_synonym_type
in_subset
'Entity A' contains 'Entity B' implies that 'Entity B' is a part of the structure of 'Entity A'.
PSI-MOD
contains
The inverse relationship to "part of".
contains
'Entity A' contains 'Entity B' implies that 'Entity B' is a part of the structure of 'Entity A'.
PubMed:18688235
'Entity A' derives_from 'Entity B' implies that 'Entity A' is chemically derived from 'Entity B'.
PSI-MOD
derives_from
derives from
'Entity A' derives_from 'Entity B' implies that 'Entity A' is chemically derived from 'Entity B'.
PubMed:18688235
'Entity A' has_functional_parent 'Entity B' implies that 'Entity B' has at least one chacteristic group from which 'Entity A' can be derived by functional modification.
PSI-MOD
has_functional_parent
This relationship indicates that the formula and mass of the child are not inherited from the mass of the parent.
has functional parent
'Entity A' has_functional_parent 'Entity B' implies that 'Entity B' has at least one chacteristic group from which 'Entity A' can be derived by functional modification.
PubMed:18688235
'Entity A' part_of 'Entity B' implies that 'Entity A' is a part of the structure of 'Entity B'.
PSI-MOD
part_of
part of
'Entity A' part_of 'Entity B' implies that 'Entity A' is a part of the structure of 'Entity B'.
PubMed:18688235
Covalent modification of, or a change resulting in an alteration of the measured molecular mass of, a peptide or protein amino acid residue.
ModRes
PSI-MOD
MOD:00000
protein modification
Covalent modification of, or a change resulting in an alteration of the measured molecular mass of, a peptide or protein amino acid residue.
PubMed:18688235
ModRes
A protein modification that effectively replaces a hydrogen atom with an alkyl group.
Source:
AlkylRes
PSI-MOD
MOD:00001
alkylated residue
A protein modification that effectively replaces a hydrogen atom with an alkyl group.
PubMed:18688235
Source:
none
AlkylRes
A protein modification that effectively converts an L-serine residue to O3-glycosylserine.
Origin:
Source:
TermSpec:
OGlycoSer
PSI-MOD
MOD:00002
O-glycosyl-L-serine
A protein modification that effectively converts an L-serine residue to O3-glycosylserine.
PubMed:18688235
Origin:
S
Source:
natural
TermSpec:
none
OGlycoSer
Entry from Unimod.
Source:
PSI-MOD
MOD:00003
This term is for organizational use only and should not be assigned. [JSG]
Unimod
Entry from Unimod.
PubMed:18688235
Source:
none
Artifact entry from Unimod - OBSOLETE because organizational use is no longer required.
PSI-MOD
MOD:00004
artifact
true
Artifact entry from Unimod - OBSOLETE because organizational use is no longer required.
PubMed:18688235
A protein modification that effectively converts an L-threonine residue to O3-glycosylthreonine.
Origin:
Source:
TermSpec:
OGlycoThr
PSI-MOD
MOD:00005
O-glycosyl-L-threonine
A protein modification that effectively converts an L-threonine residue to O3-glycosylthreonine.
PubMed:18688235
Origin:
T
Source:
natural
TermSpec:
none
OGlycoThr
A protein modification that effectively replaces a residue hydrogen atom on a nitrogen with a carbohydrate-like group through a glycosidic bond.
Source:
NGlycoRes
PSI-MOD
MOD:00006
N-glycosylated residue
A protein modification that effectively replaces a residue hydrogen atom on a nitrogen with a carbohydrate-like group through a glycosidic bond.
PubMed:18688235
Source:
none
NGlycoRes
A protein modification that effectively substitutes a selenium atom for a sulfur atom.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
Unimod:
Se(S)Res
PSI-MOD
Delta:S(-1)Se(1)
Selenium replaces sulphur
MOD:00007
selenium substitution for sulfur
A protein modification that effectively substitutes a selenium atom for a sulfur atom.
PubMed:12148805
Unimod:162
DiffAvg:
46.91
DiffFormula:
C 0 H 0 N 0 O 0 S -1 Se 1
DiffMono:
47.944450
Formula:
none
MassAvg:
none
MassMono:
none
Origin:
X
Source:
natural
TermSpec:
none
Unimod:
Unimod:162
Se(S)Res
Delta:S(-1)Se(1)
Selenium replaces sulphur
Entry from Unimod representing one or more entries in RESID. OBSOLETE because organizational use is no longer required.
PSI-MOD
MOD:00008
common
true
Entry from Unimod representing one or more entries in RESID. OBSOLETE because organizational use is no longer required.
PubMed:18688235
A protein modification that removes a residue, or inserts or replaces a residue with a natural, standard or nonstandard, encoded residue.
Origin:
Source:
Res
alpha-amino acid
PSI-MOD
MOD:00009
natural residue
A protein modification that removes a residue, or inserts or replaces a residue with a natural, standard or nonstandard, encoded residue.
PubMed:6692818
RESID:AA0000
Origin:
X
Source:
natural
Res
alpha-amino acid
A protein modification that effectively converts a source amino acid residue to an L-alanine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-aminopropanoic acid
2-aminopropionic acid
2-azanylpropanoic acid
Ala
L-alanine
alpha-alanine
alpha-aminopropionic acid
PSI-MOD
MOD:00010
L-alanine residue
A protein modification that effectively converts a source amino acid residue to an L-alanine.
ChEBI:29948
DeltaMass:0
PubMed:6692818
RESID:AA0001
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 3 H 5 N 1 O 1
MassAvg:
71.08
MassMono:
71.037114
Origin:
A
Source:
natural
TermSpec:
none
(2S)-2-aminopropanoic acid
2-aminopropionic acid
2-azanylpropanoic acid
Ala
L-alanine
alpha-alanine
alpha-aminopropionic acid
A protein modification that effectively converts a source amino acid residue to an L-arginine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-5-[(diaminomethylidene)amino]pentanoic acid
2-amino-5-(carbamimidamido)pentanoic acid [tautomer]
2-amino-5-[(aminoiminomethyl)amino]pentanoic acid [tautomer]
2-amino-5-guanidinopentanoic acid
2-amino-5-guanidinovaleric acid
2-azanyl-5-[bis(azanyl)methylideneazanyl]pentanoic acid
Arg
L-arginine
alpha-amino-delta-guanidinovaleric acid
PSI-MOD
MOD:00011
L-arginine residue
A protein modification that effectively converts a source amino acid residue to an L-arginine.
ChEBI:29952
DeltaMass:0
PubMed:518876
PubMed:6692818
RESID:AA0002
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 6 H 12 N 4 O 1
MassAvg:
156.19
MassMono:
156.101111
Origin:
R
Source:
natural
TermSpec:
none
(2S)-2-amino-5-[(diaminomethylidene)amino]pentanoic acid
2-amino-5-(carbamimidamido)pentanoic acid [tautomer]
2-amino-5-[(aminoiminomethyl)amino]pentanoic acid [tautomer]
2-amino-5-guanidinopentanoic acid
2-amino-5-guanidinovaleric acid
2-azanyl-5-[bis(azanyl)methylideneazanyl]pentanoic acid
Arg
L-arginine
alpha-amino-delta-guanidinovaleric acid
A protein modification that effectively converts a source amino acid residue to an L-asparagine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-4-butanediamic acid
2,4-bis(azanyl)-4-oxobutanoic acid
2,4-diamino-4-oxobutanoic acid
2-amino-3-carbamoylpropanoic acid
2-amino-4-butanediamic acid
2-aminosuccinamic acid
2-aminosuccinic acid 4-amide
Asn
L-asparagine
alpha-amino-beta-carbamylpropionic acid
alpha-aminosuccinamic acid
aspartic acid 4-amide
aspartic acid beta-amide
beta-asparagine
PSI-MOD
MOD:00012
L-asparagine residue
L-asparagine
alpha-amino-beta-carbamylpropionic acid
alpha-aminosuccinamic acid
aspartic acid 4-amide
aspartic acid beta-amide
beta-asparagine
A protein modification that effectively converts a source amino acid residue to an L-asparagine.
ChEBI:29956
DeltaMass:0
PubMed:15736973
PubMed:5681232
PubMed:6692818
PubMed:9789001
RESID:AA0003
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 4 H 6 N 2 O 2
MassAvg:
114.10
MassMono:
114.042927
Origin:
N
Source:
natural
TermSpec:
none
(2S)-2-amino-4-butanediamic acid
2,4-bis(azanyl)-4-oxobutanoic acid
2,4-diamino-4-oxobutanoic acid
2-amino-3-carbamoylpropanoic acid
2-amino-4-butanediamic acid
2-aminosuccinamic acid
2-aminosuccinic acid 4-amide
Asn
A protein modification that effectively converts a source amino acid residue to an L-aspartic acid.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-aminobutanedioic acid
2-azanylbutanedioic acid
Asp
L-aspartic acid
aminosuccinic acid
PSI-MOD
MOD:00013
L-aspartic acid residue
A protein modification that effectively converts a source amino acid residue to an L-aspartic acid.
ChEBI:29958
DeltaMass:0
PubMed:1097438
PubMed:339692
PubMed:4399050
PubMed:5764436
PubMed:6692818
PubMed:8089117
PubMed:9521123
PubMed:9582379
RESID:AA0004
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 4 H 5 N 1 O 3
MassAvg:
115.09
MassMono:
115.026943
Origin:
D
Source:
natural
TermSpec:
none
(2S)-2-aminobutanedioic acid
2-azanylbutanedioic acid
Asp
L-aspartic acid
aminosuccinic acid
A protein modification that effectively converts a source amino acid residue to an L-cysteine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2R)-2-amino-3-sulfanylpropanoic acid
(R)-cysteine
2-amino-3-mercaptopropanoic acid
2-amino-3-mercaptopropionic acid
2-azanyl-3-sulfanylpropanoic acid
3-mercapto-L-alanine
Cys
Cysteine (C, Cys)
L-(+)-cysteine
L-cysteine
alpha-amino-beta-mercaptopropanoic acid
alpha-amino-beta-mercaptopropionic acid
alpha-amino-beta-thiolpropionic acid
beta-mercaptoalanine
half-cystine
thioserine
PSI-MOD
MOD:00014
From DeltaMass: Average Mass: 121.
L-cysteine residue
A protein modification that effectively converts a source amino acid residue to an L-cysteine.
ChEBI:29950
DeltaMass:0
PubMed:1310545
PubMed:15790858
PubMed:3447159
PubMed:6692818
PubMed:7338899
RESID:AA0005
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0 S 0
DiffMono:
0.000000
Formula:
C 3 H 5 N 1 O 1 S 1
MassAvg:
103.14
MassMono:
103.009185
Origin:
C
Source:
natural
TermSpec:
none
(2R)-2-amino-3-sulfanylpropanoic acid
(R)-cysteine
2-amino-3-mercaptopropanoic acid
2-amino-3-mercaptopropionic acid
2-azanyl-3-sulfanylpropanoic acid
3-mercapto-L-alanine
Cys
Cysteine (C, Cys)
L-(+)-cysteine
L-cysteine
alpha-amino-beta-mercaptopropanoic acid
alpha-amino-beta-mercaptopropionic acid
alpha-amino-beta-thiolpropionic acid
beta-mercaptoalanine
half-cystine
thioserine
A protein modification that effectively converts a source amino acid residue to an L-glutamic acid.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-aminopentanedioic acid
1-aminopropane-1,3-dicarboxylic acid
2-aminoglutaric acid
2-azanylpentanedioic acid
Glu
L-glutamic acid
alpha-aminoglutaric acid
glutaminic acid
PSI-MOD
MOD:00015
L-glutamic acid residue
A protein modification that effectively converts a source amino acid residue to an L-glutamic acid.
ChEBI:29972
DeltaMass:0
PubMed:1881881
PubMed:4565668
PubMed:4922541
PubMed:6692818
PubMed:9326660
PubMed:957425
RESID:AA0006
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 5 H 7 N 1 O 3
MassAvg:
129.12
MassMono:
129.042593
Origin:
E
Source:
natural
TermSpec:
none
(2S)-2-aminopentanedioic acid
1-aminopropane-1,3-dicarboxylic acid
2-aminoglutaric acid
2-azanylpentanedioic acid
Glu
L-glutamic acid
alpha-aminoglutaric acid
glutaminic acid
A protein modification that effectively converts a source amino acid residue to an L-glutamine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-5-pentanediamic acid
2,5-bis(azanyl)-5-oxopentanoic acid
2,5-diamino-5-oxopentanoic acid
2-amino-4-carbamoylbutanoic acid
2-aminoglutaramic acid
Gln
L-glutamine
alpha-amino-gamma-carbamylbutyric acid
glutamic acid 5-amide
glutamic acid gamma-amide
glutamide
PSI-MOD
MOD:00016
L-glutamine residue
A protein modification that effectively converts a source amino acid residue to an L-glutamine.
ChEBI:30011
DeltaMass:0
PubMed:3340166
PubMed:6692818
PubMed:9342308
RESID:AA0007
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 5 H 8 N 2 O 2
MassAvg:
128.13
MassMono:
128.058578
Origin:
Q
Source:
natural
TermSpec:
none
(2S)-2-amino-5-pentanediamic acid
2,5-bis(azanyl)-5-oxopentanoic acid
2,5-diamino-5-oxopentanoic acid
2-amino-4-carbamoylbutanoic acid
2-aminoglutaramic acid
Gln
L-glutamine
alpha-amino-gamma-carbamylbutyric acid
glutamic acid 5-amide
glutamic acid gamma-amide
glutamide
A protein modification that effectively converts a source amino acid residue to a glycine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
Gly
aminoacetic acid
aminoethanoic acid
azanylethanoic acid
glycine
glycocoll
PSI-MOD
MOD:00017
glycine residue
A protein modification that effectively converts a source amino acid residue to a glycine.
ChEBI:29947
DeltaMass:0
PubMed:1310545
PubMed:6692818
RESID:AA0008
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 2 H 3 N 1 O 1
MassAvg:
57.05
MassMono:
57.021464
Origin:
G
Source:
natural
TermSpec:
none
Gly
aminoacetic acid
aminoethanoic acid
azanylethanoic acid
glycine
glycocoll
A protein modification that effectively converts a source amino acid residue to an L-histidine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-3-(1H-imidazol-4-yl)propanoic acid
(2S)-2-amino-3-(1H-imidazol-5-yl)propanoic acid [tautomer]
2-azanyl-3-(1H-imidazol-4-yl)propanoic acid
2-azanyl-3-(1H-imidazol-5-yl)propanoic acid [tautomer]
4-(2-amino-2-carboxyethyl)imidazole
His
L-histidine
alpha-amino-beta-(4-imidazole)propionic acid
glyoxaline-5-alanine
PSI-MOD
MOD:00018
L-histidine residue
A protein modification that effectively converts a source amino acid residue to an L-histidine.
ChEBI:29979
DeltaMass:0
PubMed:14342316
PubMed:2722967
PubMed:512
PubMed:5460889
PubMed:6129252
PubMed:6692818
PubMed:6876174
RESID:AA0009
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 6 H 7 N 3 O 1
MassAvg:
137.14
MassMono:
137.058912
Origin:
H
Source:
natural
TermSpec:
none
(2S)-2-amino-3-(1H-imidazol-4-yl)propanoic acid
(2S)-2-amino-3-(1H-imidazol-5-yl)propanoic acid [tautomer]
2-azanyl-3-(1H-imidazol-4-yl)propanoic acid
2-azanyl-3-(1H-imidazol-5-yl)propanoic acid [tautomer]
4-(2-amino-2-carboxyethyl)imidazole
His
L-histidine
alpha-amino-beta-(4-imidazole)propionic acid
glyoxaline-5-alanine
A protein modification that effectively converts a source amino acid residue to an L-isoleucine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S,3S)-2-amino-3-methylpentanoic acid
2-azanyl-3-methylpentanoic acid
3-methyl-norvaline
Ile
Isoleucyl
L-erythro-isoleucine
L-isoleucine
alpha-amino-beta-methylvaleric acid
PSI-MOD
MOD:00019
L-isoleucine residue
A protein modification that effectively converts a source amino acid residue to an L-isoleucine.
ChEBI:30009
DeltaMass:0
PubMed:6692818
RESID:AA0010
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 6 H 11 N 1 O 1
MassAvg:
113.16
MassMono:
113.084064
Origin:
I
Source:
natural
TermSpec:
none
(2S,3S)-2-amino-3-methylpentanoic acid
2-azanyl-3-methylpentanoic acid
3-methyl-norvaline
Ile
Isoleucyl
L-erythro-isoleucine
L-isoleucine
alpha-amino-beta-methylvaleric acid
A protein modification that effectively converts a source amino acid residue to an L-leucine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-4-methylpentanoic acid
2-azanyl-4-methylpentanoic acid
4-methyl-norvaline
L-leucine
Leu
alpha-amino-gamma-methylvaleric acid
alpha-aminoisocaproic acid
PSI-MOD
MOD:00020
L-leucine residue
A protein modification that effectively converts a source amino acid residue to an L-leucine.
ChEBI:30006
DeltaMass:0
PubMed:11478885
PubMed:6692818
RESID:AA0011
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 6 H 11 N 1 O 1
MassAvg:
113.16
MassMono:
113.084064
Origin:
L
Source:
natural
TermSpec:
none
(2S)-2-amino-4-methylpentanoic acid
2-azanyl-4-methylpentanoic acid
4-methyl-norvaline
L-leucine
Leu
alpha-amino-gamma-methylvaleric acid
alpha-aminoisocaproic acid
A protein modification that effectively converts a source amino acid residue to L-lysine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2,6-diaminohexanoic acid
2,6-bis(azanyl)hexanoic acid
6-amino-L-norleucine
ACT_SITE Schiff-base intermediate with substrate
L-lysine
Lys
alpha,epsilon-diaminocaproic acid
PSI-MOD
MOD:00021
L-lysine residue
A protein modification that effectively converts a source amino acid residue to L-lysine.
ChEBI:29967
DeltaMass:0
PubMed:3106962
PubMed:6120171
PubMed:6692818
RESID:AA0012
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 6 H 12 N 2 O 1
MassAvg:
128.18
MassMono:
128.094963
Origin:
K
Source:
natural
TermSpec:
none
(2S)-2,6-diaminohexanoic acid
2,6-bis(azanyl)hexanoic acid
6-amino-L-norleucine
ACT_SITE Schiff-base intermediate with substrate
L-lysine
Lys
alpha,epsilon-diaminocaproic acid
A protein modification that effectively converts a source amino acid residue to L-methionine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-4-(methylsulfanyl)butanoic acid
2-amino-4-(methylthio)butanoic acid
2-amino-4-(methylthio)butyric acid
2-azanyl-4-(methylsulfanyl)butanoic acid
L-(-)-methionine
L-methionine
Met
S-methyl-L-homocysteine
alpha-amino-gamma-methylmercaptobutyric acid
alpha-amino-gamma-methylthiobutyric acid
gamma-methylthio-alpha-aminobutyric acid
PSI-MOD
MOD:00022
From DeltaMass: Average Mass: 149
L-methionine residue
A protein modification that effectively converts a source amino acid residue to L-methionine.
ChEBI:29983
DeltaMass:0
PubMed:6411710
PubMed:6692818
RESID:AA0013
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0 S 0
DiffMono:
0.000000
Formula:
C 5 H 9 N 1 O 1 S 1
MassAvg:
131.19
MassMono:
131.040485
Origin:
M
Source:
natural
TermSpec:
none
(2S)-2-amino-4-(methylsulfanyl)butanoic acid
2-amino-4-(methylthio)butanoic acid
2-amino-4-(methylthio)butyric acid
2-azanyl-4-(methylsulfanyl)butanoic acid
L-(-)-methionine
L-methionine
Met
S-methyl-L-homocysteine
alpha-amino-gamma-methylmercaptobutyric acid
alpha-amino-gamma-methylthiobutyric acid
gamma-methylthio-alpha-aminobutyric acid
A protein modification that effectively converts a source amino acid residue to L-phenylalanine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-3-phenylpropanoic acid
2-azanyl-3-phenylpropanoic acid
L-phenylalanine
Phe
alpha-amino-beta-phenylpropionic acid
PSI-MOD
MOD:00023
L-phenylalanine residue
A protein modification that effectively converts a source amino acid residue to L-phenylalanine.
ChEBI:29997
DeltaMass:0
PubMed:6692818
RESID:AA0014
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 9 H 9 N 1 O 1
MassAvg:
147.18
MassMono:
147.068414
Origin:
F
Source:
natural
TermSpec:
none
(2S)-2-amino-3-phenylpropanoic acid
2-azanyl-3-phenylpropanoic acid
L-phenylalanine
Phe
alpha-amino-beta-phenylpropionic acid
A protein modification that effectively converts a source amino acid residue to L-proline.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-pyrrolidinecarboxylic acid
L-proline
Pro
pyrrolidine-2-carboxylic acid
PSI-MOD
MOD:00024
L-proline residue
A protein modification that effectively converts a source amino acid residue to L-proline.
ChEBI:30017
DeltaMass:0
PubMed:6692818
PubMed:8547259
RESID:AA0015
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 5 H 7 N 1 O 1
MassAvg:
97.12
MassMono:
97.052764
Origin:
P
Source:
natural
TermSpec:
none
(2S)-2-pyrrolidinecarboxylic acid
L-proline
Pro
pyrrolidine-2-carboxylic acid
A protein modification that effectively converts a source amino acid residue to L-serine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-3-hydroxypropanoic acid
2-azanyl-3-hydroxypropanoic acid
3-hydroxy-L-alanine
L-serine
Ser
alpha-amino-beta-hydroxypropionic acid
beta-hydroxyalanine
PSI-MOD
MOD:00025
L-serine residue
A protein modification that effectively converts a source amino acid residue to L-serine.
ChEBI:29999
DeltaMass:0
PubMed:4399050
PubMed:6692818
RESID:AA0016
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 3 H 5 N 1 O 2
MassAvg:
87.08
MassMono:
87.032028
Origin:
S
Source:
natural
TermSpec:
none
(2S)-2-amino-3-hydroxypropanoic acid
2-azanyl-3-hydroxypropanoic acid
3-hydroxy-L-alanine
L-serine
Ser
alpha-amino-beta-hydroxypropionic acid
beta-hydroxyalanine
A protein modification that effectively converts a source amino acid residue to L-threonine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S,3R)-2-amino-3-hydroxybutanoic acid
2-azanyl-3-hydroxybutanoic acid
L-threo-threonine
L-threonine
Thr
alpha-amino-beta-hydroxybutyric acid
beta-methylserine
PSI-MOD
MOD:00026
L-threonine residue
A protein modification that effectively converts a source amino acid residue to L-threonine.
ChEBI:30013
DeltaMass:0
PubMed:2989287
PubMed:6692818
RESID:AA0017
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 4 H 7 N 1 O 2
MassAvg:
101.10
MassMono:
101.047678
Origin:
T
Source:
natural
TermSpec:
none
(2S,3R)-2-amino-3-hydroxybutanoic acid
2-azanyl-3-hydroxybutanoic acid
L-threo-threonine
L-threonine
Thr
alpha-amino-beta-hydroxybutyric acid
beta-methylserine
A protein modification that effectively converts a source amino acid residue to L-tryptophan.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-3-(1H-indol-3-yl)propanoic acid
2-azanyl-3-(1H-indol-3-yl)propanoic acid
L-tryptophan
Trp
alpha-amino-beta-(3-indolyl)propionoic acid
beta(3-indolyl)alanine
PSI-MOD
MOD:00027
L-tryptophan residue
A protein modification that effectively converts a source amino acid residue to L-tryptophan.
ChEBI:29954
DeltaMass:0
PubMed:2059637
PubMed:6692818
PubMed:9324768
RESID:AA0018
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 11 H 10 N 2 O 1
MassAvg:
186.21
MassMono:
186.079313
Origin:
W
Source:
natural
TermSpec:
none
(2S)-2-amino-3-(1H-indol-3-yl)propanoic acid
2-azanyl-3-(1H-indol-3-yl)propanoic acid
L-tryptophan
Trp
alpha-amino-beta-(3-indolyl)propionoic acid
beta(3-indolyl)alanine
A protein modification that effectively converts a source amino acid residue to L-tyrosine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-3-(4-hydoxyphenyl)propanoic acid
2-azanyl-3-(4-hydoxyphenyl)propanoic acid
L-tyrosine
Tyr
alpha-amino-beta-(para-hydroxyphenyl)propionic acid
p-tyrosine
para-hydroxyphenylalanine
PSI-MOD
MOD:00028
L-tyrosine residue
A protein modification that effectively converts a source amino acid residue to L-tyrosine.
ChEBI:29975
DeltaMass:0
PubMed:2190093
PubMed:2542938
PubMed:5550972
PubMed:6061414
PubMed:6120171
PubMed:6692818
RESID:AA0019
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 9 H 9 N 1 O 2
MassAvg:
163.18
MassMono:
163.063329
Origin:
Y
Source:
natural
TermSpec:
none
(2S)-2-amino-3-(4-hydoxyphenyl)propanoic acid
2-azanyl-3-(4-hydoxyphenyl)propanoic acid
L-tyrosine
Tyr
alpha-amino-beta-(para-hydroxyphenyl)propionic acid
p-tyrosine
para-hydroxyphenylalanine
A protein modification that effectively converts a source amino acid residue to an L-valine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-amino-3-methylbutanoic acid
2-azanyl-3-methylbutanoic acid
L-valine
Val
alpha-amino-beta-methylbutyric acid
alpha-aminoisovaleric acid
PSI-MOD
MOD:00029
L-valine residue
A protein modification that effectively converts a source amino acid residue to an L-valine.
ChEBI:30015
DeltaMass:0
PubMed:6692818
RESID:AA0020
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0
DiffMono:
0.000000
Formula:
C 5 H 9 N 1 O 1
MassAvg:
99.13
MassMono:
99.068414
Origin:
V
Source:
natural
TermSpec:
none
(2S)-2-amino-3-methylbutanoic acid
2-azanyl-3-methylbutanoic acid
L-valine
Val
alpha-amino-beta-methylbutyric acid
alpha-aminoisovaleric acid
A protein modification that effectively converts a source amino acid residue to an N-formyl-L-methionine, a natural pretranslational modification.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-formylamino-4-(methylsulfanyl)butanoic acid
2-formamido-4-(methylsulfanyl)butanoic acid
2-formylamino-4-(methylthio)butanoic acid
2-formylazanyl-4-(methylsulfanyl)butanoic acid
MOD_RES N-formylmethionine
N-formyl-L-methionine
N-formylated L-methionine
fMet
nformylmet
PSI-MOD
FormylMet
MOD:00030
N-formyl-L-methionine residue
A protein modification that effectively converts a source amino acid residue to an N-formyl-L-methionine, a natural pretranslational modification.
ChEBI:33718
OMSSA:22
PubMed:10825024
PubMed:11152118
PubMed:2165784
PubMed:3042771
PubMed:8758896
RESID:AA0021#FMET
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0 S 0
DiffMono:
0.000000
Formula:
C 6 H 10 N 1 O 2 S 1
MassAvg:
160.21
MassMono:
160.043225
Origin:
M
Source:
natural
TermSpec:
N-term
(2S)-2-formylamino-4-(methylsulfanyl)butanoic acid
2-formamido-4-(methylsulfanyl)butanoic acid
2-formylamino-4-(methylthio)butanoic acid
2-formylazanyl-4-(methylsulfanyl)butanoic acid
MOD_RES N-formylmethionine
N-formyl-L-methionine
N-formylated L-methionine
fMet
nformylmet
FormylMet
A protein modification that effectively converts a source amino acid residue to an L-selenocysteine, a natural pretranslational modification.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2R)-2-amino-3-selanylpropanoic acid
2-azanyl-3-selanylpropanoic acid
3-selenylalanine
L-selenocysteine
NON_STD Selenocysteine
SeCys
Sec
selenium cysteine
PSI-MOD
MOD:00031
L-selenocysteine residue
A protein modification that effectively converts a source amino acid residue to an L-selenocysteine, a natural pretranslational modification.
ChEBI:30000
PubMed:10523135
PubMed:1066676
PubMed:2037562
PubMed:2963330
PubMed:4734725
PubMed:6076213
PubMed:6217842
PubMed:6714945
RESID:AA0022
DiffAvg:
0.00
DiffFormula:
C 0 H 0 N 0 O 0 Se 0
DiffMono:
0.000000
Formula:
C 3 H 5 N 1 O 1 Se 1
MassAvg:
150.05
MassMono:
150.953635
Origin:
U
Source:
natural
TermSpec:
none
(2R)-2-amino-3-selanylpropanoic acid
2-azanyl-3-selanylpropanoic acid
3-selenylalanine
L-selenocysteine
NON_STD Selenocysteine
SeCys
Sec
selenium cysteine
A protein modification that is not chemically categorized.
Source:
PSI-MOD
MOD:00032
This term is for organizational use only and should not be assigned. [JSG]
uncategorized protein modification
A protein modification that is not chemically categorized.
PubMed:18688235
Source:
none
A protein modification that crosslinks two or more amino acid residues with covalent bonds.
Source:
XLNK-Res-Res
PSI-MOD
MOD:00033
The covalent bond is formed directly between sidechain atoms. If non-aminoacid atoms are involved in connecting two or more peptide chain residues peptide chain, the connection is classified as a multivalent binding site.
crosslinked residues
A protein modification that crosslinks two or more amino acid residues with covalent bonds.
PubMed:18688235
Source:
none
XLNK-Res-Res
A protein modification that effectively cross-links two L-cysteine residues to form L-cystine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2R,2'R)-3,3'-disulfane-1,2-diylbis(2-aminopropanoic acid)
3,3'-disulfane-1,2-diylbis(2-azanylpropanoic acid)
3,3'-dithiobis(2-aminopropanoic acid)
3,3'-dithiobisalanine
3,3'-dithiodialanine
Cys2
Cystine ((Cys)2)
DISULFID
DISULFID Interchain
L-cystine
XLNK-SCys-SCys
beta,beta'-diamino-beta,beta'-dicarboxydiethyldisulfide
beta,beta'-dithiodialanine
bis(alpha-aminopropionic acid)-beta-disulfide
bis(beta-amino-beta-carboxyethyl)disulfide
dicysteine
PSI-MOD
2-amino-3-(2-amino-2-carboxy-ethyl)disulfanyl-propanoic acid
MOD:00034
Cross-link 2; for formation of a disulfide bond between a peptide cysteine and a free cysteine, see MOD:00765.
L-cystine (cross-link)
A protein modification that effectively cross-links two L-cysteine residues to form L-cystine.
ChEBI:16283
DeltaMass:0
PubMed:1988019
PubMed:2001356
PubMed:2076469
PubMed:3083866
PubMed:366603
PubMed:7918467
PubMed:8344916
RESID:AA0025#CYS2
DiffAvg:
-2.02
DiffFormula:
C 0 H -2 N 0 O 0 S 0
DiffMono:
-2.015650
Formula:
C 6 H 8 N 2 O 2 S 2
MassAvg:
204.26
MassMono:
204.002720
Origin:
C, C
Source:
natural
TermSpec:
none
(2R,2'R)-3,3'-disulfane-1,2-diylbis(2-aminopropanoic acid)
3,3'-disulfane-1,2-diylbis(2-azanylpropanoic acid)
3,3'-dithiobis(2-aminopropanoic acid)
3,3'-dithiobisalanine
3,3'-dithiodialanine
Cys2
Cystine ((Cys)2)
DISULFID
DISULFID Interchain
L-cystine
XLNK-SCys-SCys
beta,beta'-diamino-beta,beta'-dicarboxydiethyldisulfide
beta,beta'-dithiodialanine
bis(alpha-aminopropionic acid)-beta-disulfide
bis(beta-amino-beta-carboxyethyl)disulfide
dicysteine
2-amino-3-(2-amino-2-carboxy-ethyl)disulfanyl-propanoic acid
A protein modification that effectively converts an L-asparagine residue to (2S,3R)-3-hydroxyasparagine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S,3R)-2,4-diamino-3-hydroxy-4-oxobutanoic acid
(2S,3R)-2-amino-3-hydroxy-4-butanediamic acid
(2S,3R)-3-hydroxyasparagine
(3R)3HyAsn
2-azanyl-3-hydroxy-4-butanediamic acid
L-erythro-beta-hydroxyasparagine
MOD_RES (3R)-3-hydroxyasparagine
erythro-beta-hydroxylated L-asparagine
PSI-MOD
MOD:00035
(2S,3R)-3-hydroxyasparagine
A protein modification that effectively converts an L-asparagine residue to (2S,3R)-3-hydroxyasparagine.
ChEBI:141853
PubMed:11823643
PubMed:2820791
RESID:AA0026
DiffAvg:
16.00
DiffFormula:
C 0 H 0 N 0 O 1
DiffMono:
15.994915
Formula:
C 4 H 6 N 2 O 3
MassAvg:
130.10
MassMono:
130.037842
Origin:
N
Source:
natural
TermSpec:
none
UniProt:
PTM-0369
(2S,3R)-2,4-diamino-3-hydroxy-4-oxobutanoic acid
(2S,3R)-2-amino-3-hydroxy-4-butanediamic acid
(2S,3R)-3-hydroxyasparagine
(3R)3HyAsn
2-azanyl-3-hydroxy-4-butanediamic acid
L-erythro-beta-hydroxyasparagine
MOD_RES (3R)-3-hydroxyasparagine
erythro-beta-hydroxylated L-asparagine
A protein modification that effectively converts an L-aspartic acid residue to (2S,3R)-3-hydroxyaspartic acid.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
Unimod:
(2S,3R)-2-amino-3-hydroxybutanedioic acid
(2S,3R)-3-hydroxyaspartic acid
(3R)3HyAsp
2-amino-3-hydroxysuccinic acid
2-azanyl-3-hydroxybutanedioic acid
3-hydroxyaspartic acid
L-erythro-beta-hydroxyaspartic acid
MOD_RES (3R)-3-hydroxyaspartate
erythro-beta-hydroxylated L-aspartic acid
hydroxylationd
PSI-MOD
Oxidation
MOD:00036
(2S,3R)-3-hydroxyaspartic acid
A protein modification that effectively converts an L-aspartic acid residue to (2S,3R)-3-hydroxyaspartic acid.
ChEBI:141848
OMSSA:59
PubMed:6572939
PubMed:6871167
PubMed:8355279
RESID:AA0027
Unimod:35#D
DiffAvg:
16.00
DiffFormula:
C 0 H 0 N 0 O 1
DiffMono:
15.994915
Formula:
C 4 H 5 N 1 O 4
MassAvg:
131.09
MassMono:
131.021858
Origin:
D
Source:
natural
TermSpec:
none
UniProt:
PTM-0371
Unimod:
Unimod:35
(2S,3R)-2-amino-3-hydroxybutanedioic acid
(2S,3R)-3-hydroxyaspartic acid
(3R)3HyAsp
2-amino-3-hydroxysuccinic acid
2-azanyl-3-hydroxybutanedioic acid
3-hydroxyaspartic acid
L-erythro-beta-hydroxyaspartic acid
MOD_RES (3R)-3-hydroxyaspartate
erythro-beta-hydroxylated L-aspartic acid
hydroxylationd
Oxidation
A protein modification that effectively converts an L-lysine residue to one of the diastereomeric 5-hydroxy-L-lysine residues.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
5-hydroxylated L-lysine
5HyLys
PSI-MOD
MOD:00037
5-hydroxy-L-lysine
A protein modification that effectively converts an L-lysine residue to one of the diastereomeric 5-hydroxy-L-lysine residues.
ChEBI:60175
PubMed:18688235
DiffAvg:
16.00
DiffFormula:
C 0 H 0 N 0 O 1
DiffMono:
15.994915
Formula:
C 6 H 12 N 2 O 2
MassAvg:
144.17
MassMono:
144.089878
Origin:
K
Source:
natural
TermSpec:
none
UniProt:
PTM-0044
5-hydroxylated L-lysine
5HyLys
A protein modification that effectively converts an L-proline residue to 3-hydroxy-L-proline.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S,3S)-3-hydroxypyrrolidine-2-carboxylic acid
3-hydroxy-L-proline
3-hydroxylated L-proline
3-trans-hydroxy-L-proline
3HyPro
L-threo-3-hydroxyproline
MOD_RES 3-hydroxyproline
beta-hydroxypyrrolidine-alpha-carboxylic acid
PSI-MOD
MOD:00038
3-hydroxy-L-proline
A protein modification that effectively converts an L-proline residue to 3-hydroxy-L-proline.
ChEBI:16889
PubMed:2400108
PubMed:3734192
PubMed:4343807
RESID:AA0029
DiffAvg:
16.00
DiffFormula:
C 0 H 0 N 0 O 1
DiffMono:
15.994915
Formula:
C 5 H 7 N 1 O 2
MassAvg:
113.12
MassMono:
113.047678
Origin:
P
Source:
natural
TermSpec:
none
UniProt:
PTM-0030
(2S,3S)-3-hydroxypyrrolidine-2-carboxylic acid
3-hydroxy-L-proline
3-hydroxylated L-proline
3-trans-hydroxy-L-proline
3HyPro
L-threo-3-hydroxyproline
MOD_RES 3-hydroxyproline
beta-hydroxypyrrolidine-alpha-carboxylic acid
A protein modification that effectively converts an L-proline residue to 4-hydroxy-L-proline
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S,4R)-4-hydroxypyrrolidine-2-carboxylic acid
4-hydroxy-L-proline
4-hydroxylated L-proline
4-hydroxyproline
4-trans-hydroxy-L-proline
4HyPro
L-threo-4-hydroxyproline
MOD_RES 4-hydroxyproline
gamma-hydroxypyrrolidine-alpha-carboxylic acid
PSI-MOD
MOD:00039
4-hydroxy-L-proline
A protein modification that effectively converts an L-proline residue to 4-hydroxy-L-proline
ChEBI:18095
PubMed:11292863
PubMed:2400108
PubMed:3734192
RESID:AA0030
DiffAvg:
16.00
DiffFormula:
C 0 H 0 N 0 O 1
DiffMono:
15.994915
Formula:
C 5 H 7 N 1 O 2
MassAvg:
113.12
MassMono:
113.047678
Origin:
P
Source:
natural
TermSpec:
none
UniProt:
PTM-0043
(2S,4R)-4-hydroxypyrrolidine-2-carboxylic acid
4-hydroxy-L-proline
4-hydroxylated L-proline
4-hydroxyproline
4-trans-hydroxy-L-proline
4HyPro
L-threo-4-hydroxyproline
MOD_RES 4-hydroxyproline
gamma-hydroxypyrrolidine-alpha-carboxylic acid
A protein modification that effectively converts an L-glutamine residue to 2-pyrrolidone-5-carboxylic acid.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
Unimod:
(2S)-5-oxo-2-pyrrolidinecarboxylic acid
2-oxopyrrolidine-5-carboxylic acid
2-pyrrolidone-5-carboxylic acid
5-oxoproline
5-oxopyrrolidine-2-carboxylic acid
5-pyrrolidone-2-carboxylic acid
MOD_RES Pyrrolidone carboxylic acid
N-pyrrolidone carboxyl (N terminus)
PCA
PyrGlu(Gln)
Pyroglutamic Acid formed from Gln
Pyroglutamyl
ntermpeppyroq
pyroglutamic acid
PSI-MOD
Gln->pyro-Glu
Pyro-glu from Q
MOD:00040
DeltaMass gives a formula C 5 H 5 N 1 O 2 with mass 111.1
2-pyrrolidone-5-carboxylic acid (Gln)
A protein modification that effectively converts an L-glutamine residue to 2-pyrrolidone-5-carboxylic acid.
ChEBI:30652
DeltaMass:123
OMSSA:110
PubMed:10214721
PubMed:1836357
PubMed:26343
PubMed:3473473
RESID:AA0031#GLN
Unimod:28#Q
DiffAvg:
-17.03
DiffFormula:
C 0 H -3 N -1 O 0
DiffMono:
-17.026549
Formula:
C 5 H 6 N 1 O 2
MassAvg:
112.11
MassMono:
112.039853
Origin:
Q
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0261
Unimod:
Unimod:28
(2S)-5-oxo-2-pyrrolidinecarboxylic acid
2-oxopyrrolidine-5-carboxylic acid
2-pyrrolidone-5-carboxylic acid
5-oxoproline
5-oxopyrrolidine-2-carboxylic acid
5-pyrrolidone-2-carboxylic acid
MOD_RES Pyrrolidone carboxylic acid
N-pyrrolidone carboxyl (N terminus)
PCA
PyrGlu(Gln)
Pyroglutamic Acid formed from Gln
Pyroglutamyl
ntermpeppyroq
pyroglutamic acid
Gln->pyro-Glu
Pyro-glu from Q
A protein modification that effectively converts an L-glutamic acid residue to L-gamma-carboxyglutamic acid.
DiffAvg:
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MassMono:
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TermSpec:
UniProt:
Unimod:
(3S)-3-aminopropane-1,1,3-tricarboxylic acid
(3S)-3-azanylpropane-1,1,3-tricarboxylic acid
3-amino-1,1,3-propanetricarboxylic acid
3-azanylpropane-1,1,3-tricarboxylic acid
4-carboxyglutamic acid
4CbxGlu
Carboxy Glutamyl
L-gamma-carboxyglutamic acid
MOD_RES 4-carboxyglutamate
gamma-carboxylated L-glutamic acid
gammacarboxyle
PSI-MOD
1-carboxyglutamic acid
Carboxy
Carboxylation
MOD:00041
DeltaMass has an incorrect formula C 6 H 7 N 5 O 1 (N and O reversed) with mass 173.
L-gamma-carboxyglutamic acid
A protein modification that effectively converts an L-glutamic acid residue to L-gamma-carboxyglutamic acid.
DeltaMass:217
OMSSA:48
PubMed:10517147
PubMed:1807167
PubMed:3263814
PubMed:4528109
PubMed:7457858
PubMed:8135347
PubMed:8868490
PubMed:9188685
RESID:AA0032
Unimod:299#E
DiffAvg:
44.01
DiffFormula:
C 1 H 0 N 0 O 2
DiffMono:
43.989829
Formula:
C 6 H 7 N 1 O 5
MassAvg:
173.12
MassMono:
173.032422
Origin:
E
Source:
natural
TermSpec:
none
UniProt:
PTM-0039
Unimod:
Unimod:299
(3S)-3-aminopropane-1,1,3-tricarboxylic acid
(3S)-3-azanylpropane-1,1,3-tricarboxylic acid
3-amino-1,1,3-propanetricarboxylic acid
3-azanylpropane-1,1,3-tricarboxylic acid
4-carboxyglutamic acid
4CbxGlu
Carboxy Glutamyl
L-gamma-carboxyglutamic acid
MOD_RES 4-carboxyglutamate
gamma-carboxylated L-glutamic acid
gammacarboxyle
1-carboxyglutamic acid
Carboxy
Carboxy
Carboxylation
A protein modification that effectively converts an L-aspartic acid residue to L-aspartic 4-phosphoric anhydride.
DiffAvg:
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UniProt:
Unimod:
(2S)-2-amino-4-oxo-4-(phosphonooxy)butanoic acid
2-aminobutanedioic 4-phosphoric anhydride
2-azanyl-4-oxo-4-(phosphonooxy)butanoic acid
4-oxo-O-phosphono-L-homoserine
4-phosphoaspartic acid
4-phosphorylated L-aspartatic acid
ACT_SITE 4-aspartylphosphate intermediate
L-aspartic 4-phosphoric anhydride
MOD_RES 4-aspartylphosphate
PAsp
beta-aspartyl phosphate
PSI-MOD
Phospho
Phosphorylation
MOD:00042
L-aspartic 4-phosphoric anhydride
A protein modification that effectively converts an L-aspartic acid residue to L-aspartic 4-phosphoric anhydride.
ChEBI:15836
PubMed:4357737
RESID:AA0033
Unimod:21#D
DiffAvg:
79.98
DiffFormula:
C 0 H 1 N 0 O 3 P 1
DiffMono:
79.966331
Formula:
C 4 H 6 N 1 O 6 P 1
MassAvg:
195.07
MassMono:
194.993274
Origin:
D
Source:
natural
TermSpec:
none
UniProt:
PTM-0038
Unimod:
Unimod:21
(2S)-2-amino-4-oxo-4-(phosphonooxy)butanoic acid
2-aminobutanedioic 4-phosphoric anhydride
2-azanyl-4-oxo-4-(phosphonooxy)butanoic acid
4-oxo-O-phosphono-L-homoserine
4-phosphoaspartic acid
4-phosphorylated L-aspartatic acid
ACT_SITE 4-aspartylphosphate intermediate
L-aspartic 4-phosphoric anhydride
MOD_RES 4-aspartylphosphate
PAsp
beta-aspartyl phosphate
Phospho
Phosphorylation
A protein modification that effectively converts an L-cysteine residue to S-phospho-L-cysteine.
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UniProt:
Unimod:
(2R)-2-amino-3-(phosphonosulfanyl)propanoic acid
2-azanyl-3-(phosphonosulfanyl)propanoic acid
ACT_SITE Phosphocysteine intermediate
MOD_RES Phosphocysteine
PCys
S-phospho-L-cysteine
S-phosphonocysteine
S-phosphorylated L-cysteine
S3-phosphocysteine
cysteine phosphate thioester
PSI-MOD
Phospho
Phosphorylation
MOD:00043
S-phospho-L-cysteine
A protein modification that effectively converts an L-cysteine residue to S-phospho-L-cysteine.
PubMed:3142516
PubMed:7961745
PubMed:8128219
RESID:AA0034
Unimod:21#C
DiffAvg:
79.98
DiffFormula:
C 0 H 1 N 0 O 3 P 1 S 0
DiffMono:
79.966331
Formula:
C 3 H 6 N 1 O 4 P 1 S 1
MassAvg:
183.12
MassMono:
182.975515
Origin:
C
Source:
natural
TermSpec:
none
UniProt:
PTM-0251
Unimod:
Unimod:21
(2R)-2-amino-3-(phosphonosulfanyl)propanoic acid
2-azanyl-3-(phosphonosulfanyl)propanoic acid
ACT_SITE Phosphocysteine intermediate
MOD_RES Phosphocysteine
PCys
S-phospho-L-cysteine
S-phosphonocysteine
S-phosphorylated L-cysteine
S3-phosphocysteine
cysteine phosphate thioester
Phospho
Phosphorylation
A protein modification that effectively converts an L-histidine residue to tele-phospho-L-histidine (N-tau-phospho-L-histidine, 1'-phospho-L-histidine).
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UniProt:
(2S)-2-amino-3-(1-phosphono-1H-imidazol-4-yl)propanoic acid
1'-phospho-L-histidine
2-azanyl-3-(1-phosphono-1H-imidazol-4-yl)propanoic acid
ACT_SITE Tele-phosphohistidine intermediate
MOD_RES Tele-phosphohistidine
N(tau)-phosphohistidine
N1-phosphonohistidine
NE2-phosphonohistidine
NtPHis
Ntau-phosphorylated L-histidine
histidine-N(epsilon)-phosphate
histidine-N1'-phosphate
tele-phosphohistidine
PSI-MOD
Phospho
Phosphorylation
histidine-3-phosphate
MOD:00044
1'-phospho-L-histidine
A protein modification that effectively converts an L-histidine residue to tele-phospho-L-histidine (N-tau-phospho-L-histidine, 1'-phospho-L-histidine).
PubMed:11038361
PubMed:5642389
PubMed:6692818
RESID:AA0035
DiffAvg:
79.98
DiffFormula:
C 0 H 1 N 0 O 3 P 1
DiffMono:
79.966331
Formula:
C 6 H 8 N 3 O 4 P 1
MassAvg:
217.12
MassMono:
217.025242
Origin:
H
Source:
natural
TermSpec:
none
UniProt:
PTM-0325
(2S)-2-amino-3-(1-phosphono-1H-imidazol-4-yl)propanoic acid
1'-phospho-L-histidine
2-azanyl-3-(1-phosphono-1H-imidazol-4-yl)propanoic acid
ACT_SITE Tele-phosphohistidine intermediate
MOD_RES Tele-phosphohistidine
N(tau)-phosphohistidine
N1-phosphonohistidine
NE2-phosphonohistidine
NtPHis
Ntau-phosphorylated L-histidine
histidine-N(epsilon)-phosphate
histidine-N1'-phosphate
tele-phosphohistidine
Phospho
Phosphorylation
histidine-3-phosphate
A protein modification that effectively converts an L-histidine residue to pros-phospho-L-histidine (N-pi-phospho-L-histidine, 3'-phospho-L-histidine).
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UniProt:
(2S)-2-amino-3-(3-phosphono-3H-imidazol-4-yl)propanoic acid
2-azanyl-3-(3-phosphono-3H-imidazol-4-yl)propanoic acid
3'-phospho-L-histidine
ACT_SITE Pros-phosphohistidine intermediate
MOD_RES Pros-phosphohistidine
N(pi)-phosphohistidine
N3-phosphonohistidine
ND1-phosphonohistidine
NpPHis
Npi-phosphorylated L-histidine
histidine-N(delta)-phosphate
histidine-N3'-phosphate
pros-phosphohistidine
PSI-MOD
Phospho
Phosphorylation
histidine-1-phosphate
MOD:00045
3'-phospho-L-histidine
A protein modification that effectively converts an L-histidine residue to pros-phospho-L-histidine (N-pi-phospho-L-histidine, 3'-phospho-L-histidine).
PubMed:1549615
PubMed:5642389
PubMed:6692818
PubMed:7669763
PubMed:7803390
RESID:AA0036
DiffAvg:
79.98
DiffFormula:
C 0 H 1 N 0 O 3 P 1
DiffMono:
79.966331
Formula:
C 6 H 8 N 3 O 4 P 1
MassAvg:
217.12
MassMono:
217.025242
Origin:
H
Source:
natural
TermSpec:
none
UniProt:
PTM-0260
(2S)-2-amino-3-(3-phosphono-3H-imidazol-4-yl)propanoic acid
2-azanyl-3-(3-phosphono-3H-imidazol-4-yl)propanoic acid
3'-phospho-L-histidine
ACT_SITE Pros-phosphohistidine intermediate
MOD_RES Pros-phosphohistidine
N(pi)-phosphohistidine
N3-phosphonohistidine
ND1-phosphonohistidine
NpPHis
Npi-phosphorylated L-histidine
histidine-N(delta)-phosphate
histidine-N3'-phosphate
pros-phosphohistidine
Phospho
Phosphorylation
histidine-1-phosphate
A protein modification that effectively converts an L-serine residue to O-phospho-L-serine.
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Unimod:
(2S)-2-amino-3-(phosphonooxy)propanoic acid
2-amino-3-hydroxypropanoic acid 3-phosphate
2-azanyl-3-(phosphonooxy)propanoic acid
ACT_SITE Phosphoserine intermediate
MOD_RES Phosphoserine
O-phospho-L-serine
O-phosphonoserine
O-phosphorylated L-serine
O3-phosphoserine
OPSer
Phospho Seryl
phosphorylations
serine phosphate ester
PSI-MOD
Phospho
Phosphorylation
MOD:00046
O-phospho-L-serine
A protein modification that effectively converts an L-serine residue to O-phospho-L-serine.
ChEBI:15811
DeltaMass:0
OMSSA:6
PubMed:12923550
PubMed:4065410
PubMed:8061611
RESID:AA0037
Unimod:21#S
DiffAvg:
79.98
DiffFormula:
C 0 H 1 N 0 O 3 P 1
DiffMono:
79.966331
Formula:
C 3 H 6 N 1 O 5 P 1
MassAvg:
167.06
MassMono:
166.998359
Origin:
S
Source:
natural
TermSpec:
none
UniProt:
PTM-0253
Unimod:
Unimod:21
(2S)-2-amino-3-(phosphonooxy)propanoic acid
2-amino-3-hydroxypropanoic acid 3-phosphate
2-azanyl-3-(phosphonooxy)propanoic acid
ACT_SITE Phosphoserine intermediate
MOD_RES Phosphoserine
O-phospho-L-serine
O-phosphonoserine
O-phosphorylated L-serine
O3-phosphoserine
OPSer
Phospho Seryl
phosphorylations
serine phosphate ester
Phospho
Phosphorylation
A protein modification that effectively converts an L-threonine residue to O-phospho-L-threonine.
DiffAvg:
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UniProt:
Unimod:
(2S,3R)-2-amino-3-(phosphonooxy)butanoic acid
2-amino-3-hydroxybutanoic acid 3-phosphate
2-azanyl-3-(phosphonooxy)butanoic acid
MOD_RES Phosphothreonine
O-phospho-L-threonine
O-phosphorylated L-threonine
O3-phosphothreonine
OPThr
Phospho Threonyl
phosphorylationt
threonine phosphate ester
PSI-MOD
Phospho
Phosphorylation
MOD:00047
O-phospho-L-threonine
A protein modification that effectively converts an L-threonine residue to O-phospho-L-threonine.
ChEBI:21967
DeltaMass:0
OMSSA:7
PubMed:12923550
PubMed:7678926
RESID:AA0038
Unimod:21#T
DiffAvg:
79.98
DiffFormula:
C 0 H 1 N 0 O 3 P 1
DiffMono:
79.966331
Formula:
C 4 H 8 N 1 O 5 P 1
MassAvg:
181.08
MassMono:
181.014009
Origin:
T
Source:
natural
TermSpec:
none
UniProt:
PTM-0254
Unimod:
Unimod:21
(2S,3R)-2-amino-3-(phosphonooxy)butanoic acid
2-amino-3-hydroxybutanoic acid 3-phosphate
2-azanyl-3-(phosphonooxy)butanoic acid
MOD_RES Phosphothreonine
O-phospho-L-threonine
O-phosphorylated L-threonine
O3-phosphothreonine
OPThr
Phospho Threonyl
phosphorylationt
threonine phosphate ester
Phospho
Phosphorylation
A protein modification that effectively converts an L-tyrosine residue to O4'-phospho-L-tyrosine.
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Unimod:
(2S)-2-amino-3-(4-phosphonooxyphenyl)propanoic acid
2-amino-3-(4-hydroxyphenyl)propanoic acid 4'-phosphate
2-azanyl-3-(4-phosphonooxyphenyl)propanoic acid
MOD_RES Phosphotyrosine
O4'-phospho-L-tyrosine
O4'-phosphorylated L-tyrosine
O4-phosphotyrosine
OPTyr
Phospho Tyrosinyl
phosphorylationy
tyrosine phosphate
PSI-MOD
Phospho
Phosphorylation
MOD:00048
O4'-phospho-L-tyrosine
A protein modification that effectively converts an L-tyrosine residue to O4'-phospho-L-tyrosine.
DeltaMass:0
OMSSA:8
PubMed:10226369
PubMed:1725475
RESID:AA0039
Unimod:21#Y
DiffAvg:
79.98
DiffFormula:
C 0 H 1 N 0 O 3 P 1
DiffMono:
79.966331
Formula:
C 9 H 10 N 1 O 5 P 1
MassAvg:
243.15
MassMono:
243.029659
Origin:
Y
Source:
natural
TermSpec:
none
UniProt:
PTM-0255
Unimod:
Unimod:21
(2S)-2-amino-3-(4-phosphonooxyphenyl)propanoic acid
2-amino-3-(4-hydroxyphenyl)propanoic acid 4'-phosphate
2-azanyl-3-(4-phosphonooxyphenyl)propanoic acid
MOD_RES Phosphotyrosine
O4'-phospho-L-tyrosine
O4'-phosphorylated L-tyrosine
O4-phosphotyrosine
OPTyr
Phospho Tyrosinyl
phosphorylationy
tyrosine phosphate
Phospho
Phosphorylation
A protein modification that effectively converts an L-histidine residue to diphthamide.
DiffAvg:
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UniProt:
Unimod:
(2R)-1-amino-4-(4-[(2S)-2-amino-2-carboxyethyl]-1H-imidazol-2-yl)-N,N,N-trimethyl-1-oxobutan-2-aminium
(3-[4-(2-amino-2-carboxy-ethyl)-1H-imidazol-2-yl]-1-carbamoyl-propyl)-trimethylammonium
1-azanyl-4-(4-[2-azanyl-2-carboxyethyl]-1H-imidazol-2-yl)-N,N,N-trimethyl-1-oxobutan-2-azanium
2'-[3-carboxamido-3-(trimethylammonio)propyl]-L-histidine
2-[(R)-3-carboxamido-3-(trimethylammonio)propyl]-4-((S)-2-amino-2-carboxyethyl)-1H-imidazole
2-[3-carboxamido-3-(trimethylammonio)propyl]histidine
2-amino-3-[[2-(3-amino-3-carbamoyl-prop-1-enyl)-1,1,3-trimethyl-2,3-dihydroimidazol-5-yl]]propanoic acid
2-amino-4-[[5-(2-amino-2-carboxylato-ethyl)-1,1,3-trimethyl-2,3-dihydroimidazol-2-yl]]but-3-enamide
Diphth
MOD_RES Diphthamide
alpha-(aminocarbonyl)-4-(2-amino-2-carboxyethyl)-N,N,N-trimethyl-1H-imidazole-2-propanaminium
diphthamide
diphthamide (from histidine)
PSI-MOD
Diphthamide
MOD:00049
2'-[3-carboxamido-3-(trimethylammonio)propyl]-L-histidine
A protein modification that effectively converts an L-histidine residue to diphthamide.
ChEBI:16692
DeltaMass:122
PubMed:15316019
PubMed:7430147
RESID:AA0040
Unimod:375#H
DiffAvg:
143.21
DiffFormula:
C 7 H 15 N 2 O 1
DiffMono:
143.117890
FormalCharge:
1+
Formula:
C 13 H 22 N 5 O 2
MassAvg:
280.35
MassMono:
280.176801
Origin:
H
Source:
natural
TermSpec:
none
UniProt:
PTM-0118
Unimod:
Unimod:375
(2R)-1-amino-4-(4-[(2S)-2-amino-2-carboxyethyl]-1H-imidazol-2-yl)-N,N,N-trimethyl-1-oxobutan-2-aminium
(3-[4-(2-amino-2-carboxy-ethyl)-1H-imidazol-2-yl]-1-carbamoyl-propyl)-trimethylammonium
1-azanyl-4-(4-[2-azanyl-2-carboxyethyl]-1H-imidazol-2-yl)-N,N,N-trimethyl-1-oxobutan-2-azanium
2'-[3-carboxamido-3-(trimethylammonio)propyl]-L-histidine
2-[(R)-3-carboxamido-3-(trimethylammonio)propyl]-4-((S)-2-amino-2-carboxyethyl)-1H-imidazole
2-[3-carboxamido-3-(trimethylammonio)propyl]histidine
2-amino-3-[[2-(3-amino-3-carbamoyl-prop-1-enyl)-1,1,3-trimethyl-2,3-dihydroimidazol-5-yl]]propanoic acid
2-amino-4-[[5-(2-amino-2-carboxylato-ethyl)-1,1,3-trimethyl-2,3-dihydroimidazol-2-yl]]but-3-enamide
Diphth
MOD_RES Diphthamide
alpha-(aminocarbonyl)-4-(2-amino-2-carboxyethyl)-N,N,N-trimethyl-1H-imidazole-2-propanaminium
diphthamide
diphthamide (from histidine)
Diphthamide
Diphthamide
A protein modification that effectively converts an L-alanine residue to N-acetyl-L-alanine.
DiffAvg:
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UniProt:
(2S)-2-(acetamido)propanoic acid
2-(acetylamino)propanoic acid
2-(acetylazanyl)propanoic acid
AcAla
MOD_RES N-acetylalanine
N-acetyl-L-alanine
N-acetylated L-alanine
acetylalanine
PSI-MOD
MOD:00050
N-acetyl-L-alanine
A protein modification that effectively converts an L-alanine residue to N-acetyl-L-alanine.
PubMed:363452
PubMed:4700463
RESID:AA0041
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 5 H 8 N 1 O 2
MassAvg:
114.12
MassMono:
114.055504
Origin:
A
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0199
(2S)-2-(acetamido)propanoic acid
2-(acetylamino)propanoic acid
2-(acetylazanyl)propanoic acid
AcAla
MOD_RES N-acetylalanine
N-acetyl-L-alanine
N-acetylated L-alanine
acetylalanine
A protein modification that effectively converts an L-aspartic acid residue to N-acetyl-L-aspartic acid.
DiffAvg:
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UniProt:
(2S)-2-(acetamido)butanedioic acid
2-(acetylamino)butanedioic acid
2-(acetylazanyl)butanedioic acid
AcAsp
MOD_RES N-acetylaspartate
N-acetyl-L-aspartic acid
N-acetylated L-aspartic acid
acetylaspartic acid
PSI-MOD
MOD:00051
N-acetyl-L-aspartic acid
A protein modification that effectively converts an L-aspartic acid residue to N-acetyl-L-aspartic acid.
ChEBI:21547
PubMed:1560020
PubMed:2395459
RESID:AA0042
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 6 H 8 N 1 O 4
MassAvg:
158.13
MassMono:
158.045333
Origin:
D
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0200
(2S)-2-(acetamido)butanedioic acid
2-(acetylamino)butanedioic acid
2-(acetylazanyl)butanedioic acid
AcAsp
MOD_RES N-acetylaspartate
N-acetyl-L-aspartic acid
N-acetylated L-aspartic acid
acetylaspartic acid
A protein modification that effectively converts an L-cysteine residue to N-acetyl-L-cysteine.
DiffAvg:
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UniProt:
(2R)-2-acetamido-3-sulfanylpropanoic acid
2-acetylamino-3-mercaptopropanoic acid
2-acetylamino-3-sulfanylpropanoic acid
2-acetylazanyl-3-sulfanylpropanoic acid
MOD_RES N-acetylcysteine
N-acetyl-L-cysteine
N-acetylated cysteine
N-acetylcysteine
NAcCys
PSI-MOD
Acetyl
MOD:00052
incidental to RESID:AA0223
N-acetyl-L-cysteine
A protein modification that effectively converts an L-cysteine residue to N-acetyl-L-cysteine.
ChEBI:28939
PubMed:11857757
PubMed:11999733
PubMed:12175151
PubMed:14730666
PubMed:1500421
PubMed:15350136
PubMed:6725286
RESID:AA0043
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1 S 0
DiffMono:
42.010565
Formula:
C 5 H 8 N 1 O 2 S 1
MassAvg:
146.18
MassMono:
146.027574
Origin:
C
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0201
(2R)-2-acetamido-3-sulfanylpropanoic acid
2-acetylamino-3-mercaptopropanoic acid
2-acetylamino-3-sulfanylpropanoic acid
2-acetylazanyl-3-sulfanylpropanoic acid
MOD_RES N-acetylcysteine
N-acetyl-L-cysteine
N-acetylated cysteine
N-acetylcysteine
NAcCys
Acetyl
A protein modification that effectively converts an L-glutamic acid residue to N-acetyl-L-glutamic acid.
DiffAvg:
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UniProt:
(2S)-2-(acetamido)pentanedioic acid
2-(acetylamino)pentanedioic acid
2-(acetylazanyl)pentanedioic acid
AcGlu
MOD_RES N-acetylglutamate
N-acetyl-L-glutamic acid
N-acetylated L-glutamic acid
acetylglutamic acid
PSI-MOD
MOD:00053
N-acetyl-L-glutamic acid
A protein modification that effectively converts an L-glutamic acid residue to N-acetyl-L-glutamic acid.
ChEBI:17533
PubMed:6725286
RESID:AA0044
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 7 H 10 N 1 O 4
MassAvg:
172.16
MassMono:
172.060983
Origin:
E
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0202
(2S)-2-(acetamido)pentanedioic acid
2-(acetylamino)pentanedioic acid
2-(acetylazanyl)pentanedioic acid
AcGlu
MOD_RES N-acetylglutamate
N-acetyl-L-glutamic acid
N-acetylated L-glutamic acid
acetylglutamic acid
A protein modification that effectively converts an L-glutamine residue to N-acetyl-L-glutamine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-acetamido-5-pentanediamic acid
2-acetylamino-5-amino-5-oxopentanoic acid
2-acetylamino-5-pentanediamic acid
2-acetylazanyl-5-azanyl-5-oxopentanoic acid
AcGln
N-acetyl-L-glutamine
N-acetylated L-glutamine
acetylglutamine
PSI-MOD
MOD:00054
This is a deprecated entry in RESID. It probably does not occur naturally [JSG].
N-acetyl-L-glutamine
A protein modification that effectively converts an L-glutamine residue to N-acetyl-L-glutamine.
RESID:AA0045
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 7 H 11 N 2 O 3
MassAvg:
171.18
MassMono:
171.076967
Origin:
Q
Source:
artifact
TermSpec:
N-term
(2S)-2-acetamido-5-pentanediamic acid
2-acetylamino-5-amino-5-oxopentanoic acid
2-acetylamino-5-pentanediamic acid
2-acetylazanyl-5-azanyl-5-oxopentanoic acid
AcGln
N-acetyl-L-glutamine
N-acetylated L-glutamine
acetylglutamine
A protein modification that effectively converts a glycine residue to N-acetylglycine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(acetylamino)acetic acid
(acetylazanyl)ethanoic acid
2-(acetamido)ethanoic acid
2-(acetylamino)ethanoic acid
AcGly
MOD_RES N-acetylglycine
N-acetylated glycine
N-acetylglycine
aceturic acid
PSI-MOD
MOD:00055
N-acetylglycine
A protein modification that effectively converts a glycine residue to N-acetylglycine.
PubMed:272676
PubMed:5545094
PubMed:6754709
RESID:AA0046
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 4 H 6 N 1 O 2
MassAvg:
100.10
MassMono:
100.039853
Origin:
G
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0203
(acetylamino)acetic acid
(acetylazanyl)ethanoic acid
2-(acetamido)ethanoic acid
2-(acetylamino)ethanoic acid
AcGly
MOD_RES N-acetylglycine
N-acetylated glycine
N-acetylglycine
aceturic acid
A protein modification that effectively converts an L-isoleucine residue to N-acetyl-L-isoleucine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S,3S)-2-acetamido-3-methylpentanoic acid
2-acetylamino-3-methylpentanoic acid
2-acetylazanyl-3-methylpentanoic acid
AcIle
N-acetyl-L-isoleucine
N-acetylated L-isoleucine
acetylisoleucine
PSI-MOD
MOD:00056
This is a deprecated entry in RESID. It probably does not occur naturally [JSG].
N-acetyl-L-isoleucine
A protein modification that effectively converts an L-isoleucine residue to N-acetyl-L-isoleucine.
PubMed:8034631
RESID:AA0047
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 8 H 14 N 1 O 2
MassAvg:
156.20
MassMono:
156.102454
Origin:
I
Source:
artifact
TermSpec:
N-term
UniProt:
PTM-0204
(2S,3S)-2-acetamido-3-methylpentanoic acid
2-acetylamino-3-methylpentanoic acid
2-acetylazanyl-3-methylpentanoic acid
AcIle
N-acetyl-L-isoleucine
N-acetylated L-isoleucine
acetylisoleucine
A protein modification that effectively converts an L-lysine residue to N2-acetyl-L-lysine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
(2S)-2-acetamido-6-aminohexanoic acid
2-acetylamino-6-aminohexanoic acid
2-acetylazanyl-6-azanylhexanoic acid
N2-acetyl-L-lysine
N2-acetylated L-lysine
N2-acetyllysine
N2AcLys
PSI-MOD
Acetyl
MOD:00057
This is a deprecated entry in RESID. It probably does not occur naturally [JSG].
N2-acetyl-L-lysine
A protein modification that effectively converts an L-lysine residue to N2-acetyl-L-lysine.
PubMed:11857757
PubMed:11999733
PubMed:12175151
PubMed:14730666
PubMed:15350136
RESID:AA0048
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 8 H 15 N 2 O 2
MassAvg:
171.22
MassMono:
171.113353
Origin:
K
Source:
artifact
TermSpec:
N-term
(2S)-2-acetamido-6-aminohexanoic acid
2-acetylamino-6-aminohexanoic acid
2-acetylazanyl-6-azanylhexanoic acid
N2-acetyl-L-lysine
N2-acetylated L-lysine
N2-acetyllysine
N2AcLys
Acetyl
A protein modification that effectively converts an L-methionine to N-acetyl-L-methionine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S)-2-acetamido-4-(methylsulfanyl)butanoic acid
2-acetylamino-4-(methylsulfanyl)butanoic acid
2-acetylamino-4-(methylthio)butanoic acid
2-acetylazanyl-4-(methylsulfanyl)butanoic acid
AcMet
MOD_RES N-acetylmethionine
N-acetyl-L-methionine
N-acetylated L-methionine
acetylmethionine
methionamine
PSI-MOD
MOD:00058
N-acetyl-L-methionine
AcMet
MOD_RES N-acetylmethionine
N-acetyl-L-methionine
N-acetylated L-methionine
acetylmethionine
methionamine
A protein modification that effectively converts an L-methionine to N-acetyl-L-methionine.
PubMed:7944406
RESID:AA0049
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1 S 0
DiffMono:
42.010565
Formula:
C 7 H 12 N 1 O 2 S 1
MassAvg:
174.24
MassMono:
174.058875
Origin:
M
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0205
(2S)-2-acetamido-4-(methylsulfanyl)butanoic acid
2-acetylamino-4-(methylsulfanyl)butanoic acid
2-acetylamino-4-(methylthio)butanoic acid
2-acetylazanyl-4-(methylsulfanyl)butanoic acid
A protein modification that effectively converts an L-proline residue to N-acetyl-L-proline.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S)-1-acetyl-2-pyrrolidinecarboxylic acid
1-acetylproline
MOD_RES N-acetylproline
N-acetyl-L-proline
N-acetylated L-proline
N-acetylproline
NAcPro
acetylproline
PSI-MOD
MOD:00059
N-acetyl-L-proline
A protein modification that effectively converts an L-proline residue to N-acetyl-L-proline.
PubMed:2928307
RESID:AA0050
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 7 H 10 N 1 O 2
MassAvg:
140.16
MassMono:
140.071154
Origin:
P
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0206
(2S)-1-acetyl-2-pyrrolidinecarboxylic acid
1-acetylproline
MOD_RES N-acetylproline
N-acetyl-L-proline
N-acetylated L-proline
N-acetylproline
NAcPro
acetylproline
A protein modification that effectively converts an L-serine residue to N-acetyl-L-serine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S)-2-acetamido-3-hydroxypropanoic acid
2-acetylamino-3-hydroxypropanoic acid
2-acetylazanyl-3-hydroxypropanoic acid
MOD_RES N-acetylserine
N-acetyl-L-serine
N-acetylated L-serine
N-acetylserine
NAcSer
PSI-MOD
Acetyl
MOD:00060
N-acetyl-L-serine
A protein modification that effectively converts an L-serine residue to N-acetyl-L-serine.
PubMed:11857757
PubMed:11999733
PubMed:12175151
PubMed:14730666
PubMed:15350136
PubMed:1880797
PubMed:2106685
PubMed:6997045
RESID:AA0051
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 5 H 8 N 1 O 3
MassAvg:
130.12
MassMono:
130.050418
Origin:
S
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0207
(2S)-2-acetamido-3-hydroxypropanoic acid
2-acetylamino-3-hydroxypropanoic acid
2-acetylazanyl-3-hydroxypropanoic acid
MOD_RES N-acetylserine
N-acetyl-L-serine
N-acetylated L-serine
N-acetylserine
NAcSer
Acetyl
A protein modification that effectively converts an L-threonine residue to N-acetyl-L-threonine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S,3R)-2-acetamido-3-hydroxybutanoic acid
2-acetylamino-3-hydroxybutanoic acid
2-acetylazanyl-3-hydroxybutanoic acid
MOD_RES N-acetylthreonine
N-acetyl-L-threonine
N-acetylated L-threonine
N-acetylthreonine
N-methylcarbonylthreonine
NAcThr
PSI-MOD
Acetyl
Acetylation
MOD:00061
N-acetyl-L-threonine
A protein modification that effectively converts an L-threonine residue to N-acetyl-L-threonine.
PubMed:11857757
PubMed:11999733
PubMed:12175151
PubMed:14730666
PubMed:15350136
PubMed:2106685
PubMed:6997045
RESID:AA0052
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 6 H 10 N 1 O 3
MassAvg:
144.15
MassMono:
144.066068
Origin:
T
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0208
(2S,3R)-2-acetamido-3-hydroxybutanoic acid
2-acetylamino-3-hydroxybutanoic acid
2-acetylazanyl-3-hydroxybutanoic acid
MOD_RES N-acetylthreonine
N-acetyl-L-threonine
N-acetylated L-threonine
N-acetylthreonine
N-methylcarbonylthreonine
NAcThr
Acetyl
Acetylation
A protein modification that effectively converts an L-tyrosine residue to N-acetyl-L-tyrosine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S)-2-acetamido-3-(4-hydoxyphenyl)propanoic acid
2-acetylamino-3-(4-hydoxyphenyl)propanoic acid
2-acetylazanyl-3-(4-hydoxyphenyl)propanoic acid
AcTyr
MOD_RES N-acetyltyrosine
N-acetyl-L-tyrosine
N-acetylated L-tyrosine
N-acetyltyrosine
PSI-MOD
Acetyl
MOD:00062
N-acetyl-L-tyrosine
A protein modification that effectively converts an L-tyrosine residue to N-acetyl-L-tyrosine.
PubMed:11857757
PubMed:11999733
PubMed:12175151
PubMed:14730666
PubMed:15350136
PubMed:2506074
PubMed:475783
RESID:AA0053
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 11 H 12 N 1 O 3
MassAvg:
206.22
MassMono:
206.081718
Origin:
Y
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0209
(2S)-2-acetamido-3-(4-hydoxyphenyl)propanoic acid
2-acetylamino-3-(4-hydoxyphenyl)propanoic acid
2-acetylazanyl-3-(4-hydoxyphenyl)propanoic acid
AcTyr
MOD_RES N-acetyltyrosine
N-acetyl-L-tyrosine
N-acetylated L-tyrosine
N-acetyltyrosine
Acetyl
A protein modification that effectively converts an L-valine residue to N-acetyl-L-valine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S)-2-acetamido-3-methylbutanoic acid
2-acetylamino-3-methylbutanoic acid
2-acetylazanyl-3-methylbutanoic acid
AcVal
MOD_RES N-acetylvaline
N-acetyl-L-valine
N-acetylated L-valine
N-acetylvaline
PSI-MOD
MOD:00063
N-acetyl-L-valine
A protein modification that effectively converts an L-valine residue to N-acetyl-L-valine.
PubMed:1735421
RESID:AA0054
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 7 H 12 N 1 O 2
MassAvg:
142.18
MassMono:
142.086804
Origin:
V
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0210
(2S)-2-acetamido-3-methylbutanoic acid
2-acetylamino-3-methylbutanoic acid
2-acetylazanyl-3-methylbutanoic acid
AcVal
MOD_RES N-acetylvaline
N-acetyl-L-valine
N-acetylated L-valine
N-acetylvaline
A protein modification that effectively converts an L-lysine residue to N6-acetyl-L-lysine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
Unimod:
(2S)-6-acetamido-2-aminohexanoic acid
6-acetylamino-2-aminohexanoic acid
6-acetylazanyl-2-aminohexanoic acid
MOD_RES N6-acetyllysine
N(zeta)-acetyllysine
N6-acetyl-L-lysine
N6-acetylated L-lysine
N6AcLys
acetylk
epsilon-acetyllysine
PSI-MOD
Acetyl
Acetylation
MOD:00064
N6-acetyl-L-lysine
A protein modification that effectively converts an L-lysine residue to N6-acetyl-L-lysine.
ChEBI:17752
DeltaMass:214
OMSSA:24
PubMed:11369851
PubMed:11857757
PubMed:11999733
PubMed:12175151
PubMed:14730666
PubMed:15350136
PubMed:1680872
PubMed:670159
RESID:AA0055
Unimod:1#K
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1
DiffMono:
42.010565
Formula:
C 8 H 14 N 2 O 2
MassAvg:
170.21
MassMono:
170.105528
Origin:
K
Source:
natural
TermSpec:
none
UniProt:
PTM-0190
Unimod:
Unimod:1
(2S)-6-acetamido-2-aminohexanoic acid
6-acetylamino-2-aminohexanoic acid
6-acetylazanyl-2-aminohexanoic acid
MOD_RES N6-acetyllysine
N(zeta)-acetyllysine
N6-acetyl-L-lysine
N6-acetylated L-lysine
N6AcLys
acetylk
epsilon-acetyllysine
Acetyl
Acetylation
A protein modification that effectively converts an L-cysteine residue to S-acetyl-L-cysteine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
Unimod:
(2R)-3-acetylsulfanyl-2-aminopropanoic acid
2-amino-3-(acetylthio)propanoic acid
2-azanyl-3-(acetylsulfanyl)propanoic acid
ACT_SITE S-acetylcysteine intermediate
S-acetyl-L-cysteine
S-acetylcysteine
SAcCys
cysteine acetate thioester
PSI-MOD
Acetyl
Acetylation
MOD:00065
S-acetyl-L-cysteine
A protein modification that effectively converts an L-cysteine residue to S-acetyl-L-cysteine.
PubMed:11857757
PubMed:11999733
PubMed:12175151
PubMed:1310545
PubMed:14730666
PubMed:15350136
RESID:AA0056
Unimod:1#C
DiffAvg:
42.04
DiffFormula:
C 2 H 2 N 0 O 1 S 0
DiffMono:
42.010565
Formula:
C 5 H 7 N 1 O 2 S 1
MassAvg:
145.18
MassMono:
145.019749
Origin:
C
Source:
natural
TermSpec:
none
Unimod:
Unimod:1
(2R)-3-acetylsulfanyl-2-aminopropanoic acid
2-amino-3-(acetylthio)propanoic acid
2-azanyl-3-(acetylsulfanyl)propanoic acid
ACT_SITE S-acetylcysteine intermediate
S-acetyl-L-cysteine
S-acetylcysteine
SAcCys
cysteine acetate thioester
Acetyl
Acetylation
A protein modification that effectively converts a glycine residue to N-formylglycine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(formylamino)acetic acid
(formylamino)ethanoic acid
(formylazanyl)ethanoic acid
2-formamidoacetic acid
2-formamidoethanoic acid
MOD_RES N-formylglycine
N(alpha)-formylglycine
N-formylated glycine
N-formylglycine
NFoGly
PSI-MOD
MOD:00066
N-formylglycine
A protein modification that effectively converts a glycine residue to N-formylglycine.
PubMed:5139483
RESID:AA0057
DiffAvg:
28.01
DiffFormula:
C 1 H 0 N 0 O 1
DiffMono:
27.994915
Formula:
C 3 H 4 N 1 O 2
MassAvg:
86.07
MassMono:
86.024203
Origin:
G
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0211
(formylamino)acetic acid
(formylamino)ethanoic acid
(formylazanyl)ethanoic acid
2-formamidoacetic acid
2-formamidoethanoic acid
MOD_RES N-formylglycine
N(alpha)-formylglycine
N-formylated glycine
N-formylglycine
NFoGly
A protein modification that effectively converts a glycine residue to N-D-glucuronoylglycine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
2-(glucuronoylamino)ethanoic acid
MOD_RES N-D-glucuronoyl glycine
N-D-glucuronoyl-glycine
N-D-glucuronyl-glycine
NGlcAGly
ntermpepglucuronylg
PSI-MOD
Glucuronyl
MOD:00067
N-D-glucuronoylglycine
A protein modification that effectively converts a glycine residue to N-D-glucuronoylglycine.
OMSSA:50
PubMed:10858503
PubMed:12716131
PubMed:6493057
PubMed:7398618
RESID:AA0058
DiffAvg:
176.12
DiffFormula:
C 6 H 8 N 0 O 6
DiffMono:
176.032088
Formula:
C 8 H 12 N 1 O 7
MassAvg:
234.18
MassMono:
234.061377
Origin:
G
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0331
2-(glucuronoylamino)ethanoic acid
MOD_RES N-D-glucuronoyl glycine
N-D-glucuronoyl-glycine
N-D-glucuronyl-glycine
NGlcAGly
ntermpepglucuronylg
Glucuronyl
A protein modification that effectively converts a glycine residue to N-myristoylglycine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
Unimod:
(tetradecanoylamino)ethanoic acid
LIPID N-myristoyl glycine
N-(1-oxotetradecyl)glycine
N-(C14:0 aliphatic acyl)glycine
N-myristoyl-glycine
N-myristoylated glycine
N-myristylglycine
N-tetradecanoylglycine
NMyrGly
ntermpepmyristoylationg
PSI-MOD
Myristoyl
Myristoylation
MOD:00068
N-myristoylglycine
A protein modification that effectively converts a glycine residue to N-myristoylglycine.
OMSSA:80
PubMed:11955007
PubMed:11955008
PubMed:1326520
PubMed:1386601
PubMed:6436247
PubMed:7543369
RESID:AA0059
Unimod:45#G
DiffAvg:
210.36
DiffFormula:
C 14 H 26 N 0 O 1
DiffMono:
210.198365
Formula:
C 16 H 30 N 1 O 2
MassAvg:
268.42
MassMono:
268.227654
Origin:
G
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0221
Unimod:
Unimod:45
(tetradecanoylamino)ethanoic acid
LIPID N-myristoyl glycine
N-(1-oxotetradecyl)glycine
N-(C14:0 aliphatic acyl)glycine
N-myristoyl-glycine
N-myristoylated glycine
N-myristylglycine
N-tetradecanoylglycine
NMyrGly
ntermpepmyristoylationg
Myristoyl
Myristoylation
A protein modification that effectively converts an L-cysteine residue to N-palmitoyl-L-cysteine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2R)-2-hexadecanoylamino-3-sulfanylpropanoic acid
2-hexadecanamido-3-sulfanylpropanoic acid
2-hexadecanoylamino-3-mercaptopropanoic acid
LIPID N-palmitoyl cysteine
N-(1-oxahexadecyl)-L-cysteine
N-hexadecanoylated L-cysteine
N-palmitoyl-L-cysteine
N-palmitoylated L-cysteine
NPamCys
PSI-MOD
Palmitoyl
Palmitoylation
MOD:00069
incidental to RESID:AA0107 incidental to RESID:AA0309
N-palmitoyl-L-cysteine
A protein modification that effectively converts an L-cysteine residue to N-palmitoyl-L-cysteine.
PubMed:10896212
PubMed:4575979
PubMed:9056182
PubMed:9593755
RESID:AA0060
DiffAvg:
238.41
DiffFormula:
C 16 H 30 N 0 O 1 S 0
DiffMono:
238.229666
Formula:
C 19 H 36 N 1 O 2 S 1
MassAvg:
342.56
MassMono:
342.246675
Origin:
C
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0222
(2R)-2-hexadecanoylamino-3-sulfanylpropanoic acid
2-hexadecanamido-3-sulfanylpropanoic acid
2-hexadecanoylamino-3-mercaptopropanoic acid
LIPID N-palmitoyl cysteine
N-(1-oxahexadecyl)-L-cysteine
N-hexadecanoylated L-cysteine
N-palmitoyl-L-cysteine
N-palmitoylated L-cysteine
NPamCys
Palmitoyl
Palmitoylation
A protein modification that effectively converts an L-alanine residue to N-methyl-L-alanine.
DiffAvg:
DiffFormula:
DiffMono:
Formula:
MassAvg:
MassMono:
Origin:
Source:
TermSpec:
UniProt:
(2S)-2-methylaminopropanoic acid
2-methylazanylpropanoic acid
MOD_RES N-methylalanine
N-methyl-L-alanine
N-methylalanine
N-methylated L-alanine
NMe1Ala
PSI-MOD
Methyl
Methylation
MOD:00070
Polypeptides with monomethylated amino terminals can undergo premature cleavage during the coupling step of an Edman degradation. This can result in "preview" with both a residue and the following residue being seen from the first step on through a sequence [JSG].
N-methyl-L-alanine
A protein modification that effectively converts an L-alanine residue to N-methyl-L-alanine.
ChEBI:17519
PubMed:323502
PubMed:337304
PubMed:7007074
RESID:AA0061
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0
DiffMono:
14.015650
Formula:
C 4 H 7 N 1 O 1
MassAvg:
85.11
MassMono:
85.052764
Origin:
A
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0214
(2S)-2-methylaminopropanoic acid
2-methylazanylpropanoic acid
MOD_RES N-methylalanine
N-methyl-L-alanine
N-methylalanine
N-methylated L-alanine
NMe1Ala
Methyl
Methylation
A protein modification that effectively converts an L-alanine residue to N,N,N-trimethyl-L-alanine.
DiffAvg:
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TermSpec:
UniProt:
(1S)-1-carboxy-N,N,N-trimethylethanaminium
(1S)-1-carboxy-N,N,N-trimethylethanazanium
(2S)-2-(trimethylammonio)propanoic acid
MOD_RES N,N,N-trimethylalanine
N,N,N-trimethyl-L-alanine
N,N,N-trimethylalanine cation
N,N,N-trimethylalaninium
N,N,N-trimethylated L-alanine
N2Me3+Ala
NMe3Ala
PSI-MOD
Trimethyl
tri-Methylation
MOD:00071
N,N,N-trimethyl-L-alanine
A protein modification that effectively converts an L-alanine residue to N,N,N-trimethyl-L-alanine.
PubMed:12590383
PubMed:332162
PubMed:3979397
PubMed:6778808
PubMed:7715456
RESID:AA0062
DiffAvg:
43.09
DiffFormula:
C 3 H 7 N 0 O 0
DiffMono:
43.054227
FormalCharge:
1+
Formula:
C 6 H 13 N 1 O 1
MassAvg:
115.18
MassMono:
115.099165
Origin:
A
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0177
(1S)-1-carboxy-N,N,N-trimethylethanaminium
(1S)-1-carboxy-N,N,N-trimethylethanazanium
(2S)-2-(trimethylammonio)propanoic acid
MOD_RES N,N,N-trimethylalanine
N,N,N-trimethyl-L-alanine
N,N,N-trimethylalanine cation
N,N,N-trimethylalaninium
N,N,N-trimethylated L-alanine
N2Me3+Ala
NMe3Ala
Trimethyl
tri-Methylation
A protein modification that effectively converts a glycine residue to N-methylglycine.
DiffAvg:
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TermSpec:
UniProt:
L-sarcosine
MOD_RES N-methylglycine
N-methylated glycine
N-methylglycine
NMe1Gly
Sar
Sarcosine
Sarcosyl
methylaminoacetic acid
methylaminoethanoic acid
PSI-MOD
Methyl
Methylation
MOD:00072
DeltaMass also has an entry for the free amino acid. Polypeptides with monomethylated amino terminals can undergo premature cleavage during the coupling step of an Edman degradation. This can result in "preview" with both a residue and the following residue being seen from the first step on through a sequence [JSG].
N-methylglycine
A protein modification that effectively converts a glycine residue to N-methylglycine.
ChEBI:15611
DeltaMass:0
PubMed:1593629
RESID:AA0063
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0
DiffMono:
14.015650
Formula:
C 3 H 5 N 1 O 1
MassAvg:
71.08
MassMono:
71.037114
Origin:
G
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0483
L-sarcosine
MOD_RES N-methylglycine
N-methylated glycine
N-methylglycine
NMe1Gly
Sar
Sarcosine
Sarcosyl
methylaminoacetic acid
methylaminoethanoic acid
Methyl
Methylation
A protein modification that effectively converts an L-methionine residue to N-methyl-L-methionine.
DiffAvg:
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MassAvg:
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TermSpec:
UniProt:
(2S)-2-methylamino-4-(methylsulfanyl)butanoic acid
2-methylamino-4-(methylthio)butanoic acid
MOD_RES N-methylmethionine
Methyl Methionyl
N-methyl-L-methionine
N-methylated L-methionine
N-methylmethionine
NMe1Met
PSI-MOD
Methyl
Methylation
MOD:00073
Polypeptides with monomethylated amino terminals can undergo premature cleavage during the coupling step of an Edman degradation. This can result in "preview" with both a residue and the following residue being seen from the first step on through a sequence [JSG].
N-methyl-L-methionine
A protein modification that effectively converts an L-methionine residue to N-methyl-L-methionine.
DeltaMass:169
PubMed:323502
PubMed:3298225
RESID:AA0064
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0 S 0
DiffMono:
14.015650
Formula:
C 6 H 11 N 1 O 1 S 1
MassAvg:
145.22
MassMono:
145.056135
Origin:
M
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0217
(2S)-2-methylamino-4-(methylsulfanyl)butanoic acid
2-methylamino-4-(methylthio)butanoic acid
MOD_RES N-methylmethionine
Methyl Methionyl
N-methyl-L-methionine
N-methylated L-methionine
N-methylmethionine
NMe1Met
Methyl
Methylation
A protein modification that effectively converts an L-phenylalanine residue to N-methyl-L-phenylalanine.
DiffAvg:
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UniProt:
(2S)-2-methylamino-3-phenylpropanoic acid
MOD_RES N-methylphenylalanine
N-methyl-L-phenylalanine
N-methylated L-phenylalanine
N-methylphenylalanine
NMe1Phe
PSI-MOD
Methyl
Methylation
MOD:00074
Polypeptides with monomethylated amino terminals can undergo premature cleavage during the coupling step of an Edman degradation. This can result in "preview" with both a residue and the following residue being seen from the first step on through a sequence [JSG].
N-methyl-L-phenylalanine
A protein modification that effectively converts an L-phenylalanine residue to N-methyl-L-phenylalanine.
PubMed:2577730
PubMed:413571
RESID:AA0065
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0
DiffMono:
14.015650
Formula:
C 10 H 11 N 1 O 1
MassAvg:
161.20
MassMono:
161.084064
Origin:
F
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0218
(2S)-2-methylamino-3-phenylpropanoic acid
MOD_RES N-methylphenylalanine
N-methyl-L-phenylalanine
N-methylated L-phenylalanine
N-methylphenylalanine
NMe1Phe
Methyl
Methylation
A protein modification that effectively converts an L-proline residue to N,N-dimethyl-L-proline.
DiffAvg:
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UniProt:
Unimod:
(2S)-2-carboxy-1,1-dimethylpyrrolidinium
1,1-dimethyl-L-prolinium
MOD_RES N,N-dimethylproline
N,N-dimethyl-L-proline
N,N-dimethyl-L-prolinium
N,N-dimethylated L-proline
NMe2Pro
stachydrin
PSI-MOD
Delta:H(5)C(2)
Dimethyl
Dimethylation of proline residue
MOD:00075
Unimod terminal specification corrected [JSG].
N,N-dimethyl-L-proline
A protein modification that effectively converts an L-proline residue to N,N-dimethyl-L-proline.
ChEBI:21451
PubMed:12964758
PubMed:14570711
PubMed:193025
PubMed:3882426
PubMed:6254758
RESID:AA0066
Unimod:529
DiffAvg:
29.06
DiffFormula:
C 2 H 5 N 0 O 0
DiffMono:
29.038577
FormalCharge:
1+
Formula:
C 7 H 13 N 1 O 1
MassAvg:
127.19
MassMono:
127.099165
Origin:
P
Source:
natural
TermSpec:
N-term
UniProt:
PTM-0179
Unimod:
Unimod:529
(2S)-2-carboxy-1,1-dimethylpyrrolidinium
1,1-dimethyl-L-prolinium
MOD_RES N,N-dimethylproline
N,N-dimethyl-L-proline
N,N-dimethyl-L-prolinium
N,N-dimethylated L-proline
NMe2Pro
stachydrin
Delta:H(5)C(2)
Dimethyl
Dimethylation of proline residue
A protein modification that effectively converts an L-arginine residue to symmetric dimethylarginine, N(omega),N'(omega)-dimethyl-L-arginine.
DiffAvg:
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UniProt:
Unimod:
(2S)-2-amino-5-[((methylamino)(methylimino)methyl)amino]pentanoic acid
MOD_RES Omega-N-methylated arginine
MOD_RES Symmetric dimethylarginine
N3,N4-dimethylarginine
N5-[(methylamino)(methylimino)methyl]ornithine
NG,N'G-dimethylarginine
NoNo'Me2Arg
omega-N,omega-N'-dimethyl-L-arginine
omega-N,omega-N'-dimethylated L-arginine
symmetric dimethylarginine
PSI-MOD
Dimethyl
di-Methylation
MOD:00076
symmetric dimethyl-L-arginine
A protein modification that effectively converts an L-arginine residue to symmetric dimethylarginine, N(omega),N'(omega)-dimethyl-L-arginine.
PubMed:12964758
PubMed:14570711
PubMed:15835918
PubMed:2426402
PubMed:5128665
RESID:AA0067
Unimod:36#R
DiffAvg:
28.05
DiffFormula:
C 2 H 4 N 0 O 0
DiffMono:
28.031300
Formula:
C 8 H 16 N 4 O 1
MassAvg:
184.24
MassMono:
184.132411
Origin:
R
Source:
natural
TermSpec:
none
UniProt:
PTM-0287
Unimod:
Unimod:36
(2S)-2-amino-5-[((methylamino)(methylimino)methyl)amino]pentanoic acid
MOD_RES Omega-N-methylated arginine
MOD_RES Symmetric dimethylarginine
N3,N4-dimethylarginine
N5-[(methylamino)(methylimino)methyl]ornithine
NG,N'G-dimethylarginine
NoNo'Me2Arg
omega-N,omega-N'-dimethyl-L-arginine
omega-N,omega-N'-dimethylated L-arginine
symmetric dimethylarginine
Dimethyl
di-Methylation
A protein modification that effectively converts an L-arginine residue to asymmetric dimethylarginine, N(omega),N(omega)-dimethyl-L-arginine.
DiffAvg:
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UniProt:
Unimod:
(2S)-2-amino-5-([(dimethylamino)(imino)methyl]amino)pentanoic acid
MOD_RES Asymmetric dimethylarginine
MOD_RES Omega-N-methylated arginine
N5-[(dimethylamino)(imino)methyl]ornithine
NG,NG-dimethylarginine
NoNoMe2Arg
asymmetric dimethylarginine
omega-N,omega-N-dimethlyated L-arginine
omega-N,omega-N-dimethyl-L-arginine
PSI-MOD
Dimethyl
di-Methylation
MOD:00077
asymmetric dimethyl-L-arginine
A protein modification that effectively converts an L-arginine residue to asymmetric dimethylarginine, N(omega),N(omega)-dimethyl-L-arginine.
ChEBI:17929
PubMed:11152131
PubMed:12964758
PubMed:14570711
PubMed:15835918
PubMed:3032834
RESID:AA0068
Unimod:36#R
DiffAvg:
28.05
DiffFormula:
C 2 H 4 N 0 O 0
DiffMono:
28.031300
Formula:
C 8 H 16 N 4 O 1
MassAvg:
184.24
MassMono:
184.132411
Origin:
R
Source:
natural
TermSpec:
none
UniProt:
PTM-0066
Unimod:
Unimod:36
(2S)-2-amino-5-([(dimethylamino)(imino)methyl]amino)pentanoic acid
MOD_RES Asymmetric dimethylarginine
MOD_RES Omega-N-methylated arginine
N5-[(dimethylamino)(imino)methyl]ornithine
NG,NG-dimethylarginine
NoNoMe2Arg
asymmetric dimethylarginine
omega-N,omega-N-dimethlyated L-arginine
omega-N,omega-N-dimethyl-L-arginine
Dimethyl
di-Methylation
A protein modification that effectively converts an L-arginine residue to N(omega)-methyl-L-arginine.
DiffAvg:
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TermSpec:
UniProt:
(2S)-2-amino-5-[(imino(methylamino)methyl)amino]pentanoic acid
MOD_RES Omega-N-methylarginine
MOD_RES Omega-N-methylated arginine
NG-methylarginine
NoMeArg
omega-N-methyl-L-arginine
omega-N-methylated L-arginine
PSI-MOD
Methyl
Methylation
MOD:00078
omega-N-methyl-L-arginine
A protein modification that effectively converts an L-arginine residue to N(omega)-methyl-L-arginine.
PubMed:11875433
PubMed:15835918
PubMed:2426402
PubMed:5128665
RESID:AA0069
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0
DiffMono:
14.015650
Formula:
C 7 H 14 N 4 O 1
MassAvg:
170.22
MassMono:
170.116761
Origin:
R
Source:
natural
TermSpec:
none
UniProt:
PTM-0237
(2S)-2-amino-5-[(imino(methylamino)methyl)amino]pentanoic acid
MOD_RES Omega-N-methylarginine
MOD_RES Omega-N-methylated arginine
NG-methylarginine
NoMeArg
omega-N-methyl-L-arginine
omega-N-methylated L-arginine
Methyl
Methylation
A protein modification that effectively converts an L-asparagine residue to N4-methyl-L-asparagine.
DiffAvg:
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TermSpec:
UniProt:
Unimod:
(2S)-2-amino-N4-methylbutanediamic acid
MOD_RES N4-methylasparagine
N(gamma)-methylasparagine
N-methylasparagine
N4-methyl-L-asparagine
N4-methylated L-asparagine
N4Me1Asn
beta-aspartyl methylamide
methyln
PSI-MOD
Methyl
Methylation
beta-methylasparagine
MOD:00079
N4-methyl-L-asparagine
A protein modification that effectively converts an L-asparagine residue to N4-methyl-L-asparagine.
OMSSA:75
PubMed:11875433
PubMed:2356973
PubMed:3782095
RESID:AA0070
Unimod:34#N
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0
DiffMono:
14.015650
Formula:
C 5 H 8 N 2 O 2
MassAvg:
128.13
MassMono:
128.058578
Origin:
N
Source:
natural
TermSpec:
none
UniProt:
PTM-0183
Unimod:
Unimod:34
(2S)-2-amino-N4-methylbutanediamic acid
MOD_RES N4-methylasparagine
N(gamma)-methylasparagine
N-methylasparagine
N4-methyl-L-asparagine
N4-methylated L-asparagine
N4Me1Asn
beta-aspartyl methylamide
methyln
Methyl
Methylation
beta-methylasparagine
A protein modification that effectively converts an L-glutamine residue to N5-methyl-L-glutamine.
DiffAvg:
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UniProt:
(2S)-2-amino-5-methylamino-5-oxopentanoic acid
2-amino-N5-methylpentanediamic acid
MOD_RES N5-methylglutamine
N(delta)-methylglutamine
N-methylglutamine
N5-methyl-L-glutamine
N5-methylated L-glutamine
N5Me1Gln
gamma-methylglutamine
PSI-MOD
Methyl
Methylation
MOD:00080
N5-methyl-L-glutamine
A protein modification that effectively converts an L-glutamine residue to N5-methyl-L-glutamine.
ChEBI:17592
DeltaMass:166
PubMed:11118225
PubMed:11875433
PubMed:365579
RESID:AA0071
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0
DiffMono:
14.015650
Formula:
C 6 H 10 N 2 O 2
MassAvg:
142.16
MassMono:
142.074228
Origin:
Q
Source:
natural
TermSpec:
none
UniProt:
PTM-0185
(2S)-2-amino-5-methylamino-5-oxopentanoic acid
2-amino-N5-methylpentanediamic acid
MOD_RES N5-methylglutamine
N(delta)-methylglutamine
N-methylglutamine
N5-methyl-L-glutamine
N5-methylated L-glutamine
N5Me1Gln
gamma-methylglutamine
Methyl
Methylation
A protein modification that effectively converts an L-glutamic acid residue to L-glutamate 5-methyl ester.
DiffAvg:
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Formula:
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Source:
TermSpec:
UniProt:
Unimod:
(2S)-2-amino-5-methoxy-5-oxopentanoic acid
(5)-methyl L-hydrogen glutamate
2-aminopentanedioic acid 5-methyl ester
5-methyl L-2-aminoglutarate
5-methyl L-glutamate
5-methyl esterified L-glutamic acid
L-glutamic acid 5-methyl ester
MOD_RES Glutamate methyl ester (Glu)
O-methyl Glutamyl
O5MeGlu
glutamic acid 5-methyl ester
glutamic acid gamma-methyl ester
meestere
methyle
PSI-MOD
Methyl
Methylation
methyl ester
MOD:00081
DeltaMass gives the formula "C 6 H 9 O 1 N 3" with mass 143 (formula incorrect, N and O reversed) [JSG].
L-glutamic acid 5-methyl ester (Glu)
A protein modification that effectively converts an L-glutamic acid residue to L-glutamate 5-methyl ester.
DeltaMass:167
OMSSA:17
OMSSA:70
PubMed:16888
PubMed:6300110
RESID:AA0072#GLU
Unimod:34#E
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0
DiffMono:
14.015650
Formula:
C 6 H 9 N 1 O 3
MassAvg:
143.14
MassMono:
143.058243
Origin:
E
Source:
natural
TermSpec:
none
UniProt:
PTM-0128
Unimod:
Unimod:34
(2S)-2-amino-5-methoxy-5-oxopentanoic acid
(5)-methyl L-hydrogen glutamate
2-aminopentanedioic acid 5-methyl ester
5-methyl L-2-aminoglutarate
5-methyl L-glutamate
5-methyl esterified L-glutamic acid
L-glutamic acid 5-methyl ester
MOD_RES Glutamate methyl ester (Glu)
O-methyl Glutamyl
O5MeGlu
glutamic acid 5-methyl ester
glutamic acid gamma-methyl ester
meestere
methyle
Methyl
Methylation
methyl ester
A protein modification that effectively converts an L-histidine residue to pros-methyl-L-histidine (N-pi-methyl-L-histidine, 3'-methyl-L-histidine).
DiffAvg:
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Source:
TermSpec:
UniProt:
(2S)-2-amino-3-(3-methyl-3H-imidazol-4-yl)propanoic acid
3'-methyl-L-histidine
MOD_RES Pros-methylhistidine
N(delta)-methylhistidine
N(pi)-methylhistidine
NpMeHis
pros-methylated L-histidine
pros-methylhistidine
PSI-MOD
1-methylhistidine
Methyl
Methylation
MOD:00082
3'-methyl-L-histidine
A protein modification that effectively converts an L-histidine residue to pros-methyl-L-histidine (N-pi-methyl-L-histidine, 3'-methyl-L-histidine).
PubMed:10660523
PubMed:11875433
PubMed:3467365
PubMed:6692818
PubMed:8076
PubMed:8645219
RESID:AA0073
DiffAvg:
14.03
DiffFormula:
C 1 H 2 N 0 O 0
DiffMono:
14.015650
Formula:
C 7 H 9 N 3 O 1
MassAvg:
151.17
MassMono:
151.074562
Origin:
H
Source:
natural
TermSpec:
none
UniProt:
PTM-0259
(2S)-2-amino-3-(3-methyl-3H-imidazol-4-yl)propanoic acid
3'-methyl-L-histidine
MOD_RES Pros-methylhistidine
N(delta)-methylhistidine
N(pi)-methylhistidine
NpMeHis
pros-methylated L-histidine
pros-methylhistidine
1-methylhistidine
Methyl
Methylation
A protein modification that effectively converts an L-lysine residue to N6,N6,N6-trimethyl-L-lysine.
DiffAvg:
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TermSpec:
UniProt:
(5S)-5-amino-5-carboxy-N,N,N-trimethylpentan-1-aminium
2-amino-6-(trimethylammonio)hexanoic acid
5-azanyl-5-carboxy-N,N,N-trimethylpentanazanium
MOD_RES N6,N6,N6-trimethyllysine
N(zeta)-trimethyllysine
N-trimethylation (of lysine)
N6,N6,N6-trimethyl-L-lysine
N6,N6,N6-trimethylated L-lysine
N6,N6,N6-trimethyllysin-N6-ium
N6,N6,N6-trimethyllysine cation
N6Me3+Lys
epsilon-trimethyllysine
PSI-MOD
Trimethyl
tri-Methylation
MOD:00083
DeltaMass calculates the mass difference from protonated lysine rather than neutral lysine; for trimethylated lysine starting from protonated lysine see MOD:00855
N6,N6,N6-trimethyl-L-lysine
A protein modification that effectively converts an L-lysine residue to N6,N6,N6-trimethyl-L-lysine.
ChEBI:17311
PubMed:12590383
PubMed:3145979
PubMed:4304194
PubMed:6778808
PubMed:7093227
PubMed:8453381
RESID:AA0074
DiffAvg:
43.09
DiffFormula:
C 3 H 7 N 0 O 0
DiffMono:
43.054227
FormalCharge:
1+
Formula:
C 9 H 19 N 2 O 1
MassAvg:
171.26
MassMono:
171.149190
Origin:
K
Source:
natural
TermSpec:
none
UniProt:
PTM-0187
(5S)-5-amino-5-carboxy-N,N,N-trimethylpentan-1-aminium
2-amino-6-(trimethylammonio)hexanoic acid
5-azanyl-5-carboxy-N,N,N-trimethylpentanazanium
MOD_RES N6,N6,N6-trimethyllysine
N(zeta)-trimethyllysine
N-trimethylation (of lysine)
N6,N6,N6-trimethyl-L-lysine
N6,N6,N6-trimethylated L-lysine
N6,N6,N6-trimethyllysin-N6-ium
N6,N6,N6-trimethyllysine cation
N6Me3+Lys
epsilon-trimethyllysine
Trimethyl
tri-Methylation
A protein modification that effectively converts an L-lysine residue to N6,N6-dimethyl-L-lysine.
DiffAvg:
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TermSpec:
UniProt:
Unimod:
(2S)-2-amino-6-(dimethylamino)hexanoic acid
MOD_RES N6,N6-dimethyllysine
N(zeta)-dimethyllysine
N6,N6-dimethyl-L-lysine
N6,N6-dimethylated L-lysine
N6Me2Lys
dimethylk
epsilon-dimethyllysine
lysine derivative Lys(y)
PSI-MOD
Dimethyl
di-Methylation
MOD:00084
N6,N6-dimethyl-L-lysine
A protein modification that effectively converts an L-lysine residue to N6,N6-dimethyl-L-lysine.
OMSSA:36
PubMed:10550045
PubMed:12964758
PubMed:14570711
PubMed:3100523
PubMed:8453381
RESID:AA0075
Unimod:36#K
DiffAvg:
28.05
DiffFormula:
C 2 H 4 N 0 O 0
DiffMono:
28.031300
Formula:
C 8 H 16 N 2 O 1
MassAvg:
156.23
MassMono:
156.126263
Origin:
K
Source:
natural
TermSpec:
none
UniProt:
PTM-0188
Unimod:
Unimod:36
(2S)-2-amino-6-(dimethylamino)hexanoic acid