Label Type Identifier Comment Ensembl NCBI gene HGNC UniProt Wikidata ChEBI InChI PubChem ChemSpider HMDB KEGG LipidMaps Nicotinic acid mononucleotide Metabolite chebi:37008 "" chebi:37008 NMN Metabolite wikidata:Q27094156 "Nicotinamide Mononucleotide" wikidata:Q27094156 chebi:50383 inchikey:DAYLJWODMCOQEW-WYOJIJJFSA-O pubchem.compound:6093202 chemspider:26329944 NAD+ Metabolite wikidata:Q28775 "" Nicotinic acid adenine dinucleotide (NaAD+) Metabolite wikidata:Q905651 "Assuming that NAADP+ is referred to (since the phosphate group is needed for stabilisation)." wikidata:Q905651 chebi:76072 inchikey:QOTXBMGJKFVZRD-HISDBWNOSA-O pubchem.compound:123953 chemspider:110475 kegg.compound:C13051 Nicotinuric acid Metabolite wikidata:Q27107528 "" wikidata:Q27107528 chebi:7563 inchikey:ZBSGKPYXQINNGF-UHFFFAOYSA-N pubchem.compound:68499 chemspider:61774 hmdb:HMDB0003269 kegg.compound:C05380 5-HT Metabolite wikidata:Q167934 "pre-cursor for serotonin/melatonin" wikidata:Q167934 chebi:28790 inchikey:QZAYGJVTTNCVMB-UHFFFAOYSA-N pubchem.compound:5202 chemspider:5013 hmdb:HMDB0000259 kegg.compound:C00780 N-methylnicotinamide Metabolite wikidata:Q27088080 "" Tryptophan (Trp) Metabolite wikidata:Q181003 "" wikidata:Q181003 chebi:57912;chebi:16828 inchikey:QIVBCDIJIAJPQS-VIFPVBQESA-N pubchem.compound:6305;pubchem.compound:6923516 chemspider:6066 hmdb:HMDB0000929 kegg.compound:C00078 L-alanine Metabolite wikidata:Q218642 "" wikidata:Q218642 chebi:16977;chebi:57972 inchikey:QNAYBMKLOCPYGJ-REOHCLBHSA-N pubchem.compound:5950;pubchem.compound:7311724 chemspider:5735 hmdb:HMDB0000161 kegg.compound:C00041 2-Amino-3-carboxymuconatesemialdehyde Metabolite pubchem.compound:5280673 "" wikidata:Q2823201 chebi:995 inchikey:KACPVQQHDVBVFC-OIFXTYEKSA-N pubchem.compound:5280673 chemspider:4444266;chemspider:7822292 hmdb:HMDB0001330 kegg.compound:C04409 ADP-ribosyl Metabolite wikidata:Q27074316 "aka ADP ribose" wikidata:Q27074316 inchikey:PWJFNRJRHXWEPT-AOOZFPJJSA-N pubchem.compound:30243 chemspider:28084 NR Metabolite wikidata:Q3334152 "N-ribosylnicotinamide = NR
occurs extracellularly in blood and milk and can be provided in the diet" wikidata:Q3334152 chebi:15927 inchikey:JLEBZPBDRKPWTD-TURQNECASA-O pubchem.compound:439924 chemspider:388956 hmdb:HMDB0000855 kegg.compound:C03150 N-formyl kynurenine Metabolite wikidata:Q27104120 "" wikidata:Q27104120 chebi:30249;chebi:58629 inchikey:BYHJHXPTQMMKCA-QMMMGPOBSA-N pubchem.compound:439788 chemspider:388843 hmdb:HMDB0060485 L-kynurenine Metabolite wikidata:Q415768 "most abundant kynurenines found in caput epididymal tissue" wikidata:Q415768 chebi:57959;chebi:16946 inchikey:YGPSJZOEDVAXAB-QMMMGPOBSA-N pubchem.compound:6971029;pubchem.compound:161166 chemspider:141580 hmdb:HMDB0000684 kegg.compound:C00328 3-OH kynurenine (HK) Metabolite wikidata:Q2815992 "" wikidata:Q2815992 chebi:1547 inchikey:VCKPUUFAIGNJHC-UHFFFAOYSA-N pubchem.compound:25244175;pubchem.compound:89 chemspider:87 hmdb:HMDB0000732 kegg.compound:C02794 3-OH anthranilic acid (HAA) Metabolite wikidata:Q2823213 "" wikidata:Q2823213 chebi:15793 inchikey:WJXSWCUQABXPFS-UHFFFAOYSA-N pubchem.compound:86 chemspider:84 hmdb:HMDB0001476 kegg.compound:C00632 Quinolinic acid (QA) Metabolite wikidata:Q411945 "" wikidata:Q411945 chebi:16675 inchikey:GJAWHXHKYYXBSV-UHFFFAOYSA-N pubchem.compound:1066 chemspider:1037 hmdb:HMDB0000232 kegg.compound:C03722 Nicotinic acid (NA) Metabolite wikidata:Q11324215 "Provided by diet and, potentially, by bacterial degradative pathways in vertebrates" Nicotinamide Metabolite wikidata:Q192423 "" wikidata:Q192423 chebi:17154 inchikey:DFPAKSUCGFBDDF-UHFFFAOYSA-N pubchem.compound:936 chemspider:911 hmdb:HMDB0001406 kegg.compound:C00153 Kynurenic acid (KA) Metabolite wikidata:Q642217 "most abundant kynurenines found in caput epididymal tissue" wikidata:Q642217 chebi:18344 inchikey:HCZHHEIFKROPDY-UHFFFAOYSA-N pubchem.compound:3845 chemspider:3712 hmdb:HMDB0000715 kegg.compound:C01717 Xanthurenic acid (XA) Metabolite wikidata:Q5961262 "" wikidata:Q5961262 chebi:10072 inchikey:FBZONXHGGPHHIY-UHFFFAOYSA-N pubchem.compound:5699 chemspider:5497 hmdb:HMDB0000881 kegg.compound:C02470 Anthranilic acid (AA) Metabolite wikidata:Q385140 "" wikidata:Q385140 chebi:30754 inchikey:RWZYAGGXGHYGMB-UHFFFAOYSA-N pubchem.compound:227 chemspider:222 hmdb:HMDB0001123 kegg.compound:C00108 Indoxyl acetic acid (IAA) Metabolite wikidata:Q411208 "indol derivative" wikidata:Q411208 chebi:16411 inchikey:SEOVTRFCIGRIMH-UHFFFAOYSA-N pubchem.compound:802 chemspider:780 hmdb:HMDB0000197 kegg.compound:C00954 Nam Metabolite wikidata:Q192423 "" wikidata:Q192423 chebi:17154 inchikey:DFPAKSUCGFBDDF-UHFFFAOYSA-N pubchem.compound:936 chemspider:911 hmdb:HMDB0001406 kegg.compound:C00153 3-hydroxyanthranilate dioxygenase Protein uniprot:P46952 "" ensembl:ENSG00000162882 ncbigene:23498 hgnc.symbol:HAAO uniprot:C9IY88;uniprot:P46952 Nrk1 Protein uniprot:Q9NWW6 "nicotinamide riboside kinases" ensembl:ENSG00000106733 ncbigene:54981 hgnc.symbol:NMRK1 uniprot:B3KN26;uniprot:Q9NWW6;uniprot:Q5W125 IDO Protein uniprot:P14902 "in most cell types" ensembl:ENSG00000131203 ncbigene:3620 hgnc.symbol:IDO1 uniprot:A0A348GSI3;uniprot:E5RIX2;uniprot:J3KN03;uniprot:P14902;uniprot:A0A140T9Z2;uniprot:E5RH36 Naprt Protein uniprot:Q6XQN6 "Na phosphoribosyltransferase" ensembl:ENSG00000147813 ncbigene:93100 hgnc.symbol:NAPRT uniprot:G5E977;uniprot:Q6XQN6;uniprot:A0A087WUT5;uniprot:H0YDA6;uniprot:C9J8U2;uniprot:H0YF31 3-HAO Protein uniprot:P46952 "3-hydroxyamino oxidase ( 3HAO )" ensembl:ENSG00000162882 ncbigene:23498 hgnc.symbol:HAAO uniprot:C9IY88;uniprot:P46952 PBEF Protein uniprot:P43490 "Nam phosphoribosyltransferase" ensembl:ENSG00000105835 ncbigene:10135 hgnc.symbol:NAMPT uniprot:P43490;uniprot:A0A7P0T8L3;uniprot:A0A7P0TA73;uniprot:A0A7P0T8R4;uniprot:A0A7P0TAZ2;uniprot:A0A7P0T8D2;uniprot:A0A7P0T9F0;uniprot:A0A7P0Z4N0;uniprot:A0A7P0Z437;uniprot:A0A7P0T9I9;uniprot:A0A7P0Z4L4;uniprot:A0A7P0T973;uniprot:A0A7P0T895;uniprot:A0A7P0T931;uniprot:A0A7P0T8Z3;uniprot:C9JG65;uniprot:A0A7P0TAI8;uniprot:B7Z8W6;uniprot:A0A024R718;uniprot:A0A7P0TAS5;uniprot:A0A0C4DFS8;uniprot:A0A7P0TB17;uniprot:A0A7P0T862;uniprot:A0A7P0TBB7;uniprot:A0A7P0T941;uniprot:A0A7P0Z466;uniprot:C9JF35 Nmnat1 Protein uniprot:Q9HAN9 "" ensembl:ENSG00000173614 ncbigene:64802 hgnc.symbol:NMNAT1 uniprot:B1AN62;uniprot:A0A024R4E1;uniprot:Q9HAN9;uniprot:K7EPD7 Nadsyn1 Protein uniprot:Q6IA69 "aka glutamine-dependent NAD+ synthetase" ensembl:ENSG00000172890 ncbigene:55191 hgnc.symbol:NADSYN1 uniprot:H0YDH3;uniprot:E9PKY6;uniprot:E9PND0;uniprot:H0YCF9;uniprot:Q6IA69;uniprot:E9PNF5;uniprot:H0YCQ6;uniprot:H0YED2;uniprot:A0A0B4J216 TDO Protein uniprot:P48775 "in liver cells" ensembl:ENSG00000151790 ncbigene:6999 hgnc.symbol:TDO2 uniprot:D6RA50;uniprot:D6RB68;uniprot:P48775 AFMID Protein uniprot:Q63HM1 "formaminase (arylformamidase; AFMID )" ensembl:ENSG00000183077 ncbigene:125061 hgnc.symbol:AFMID uniprot:Q63HM1;uniprot:W4VSQ7;uniprot:K7ELV9;uniprot:K7EQK5;uniprot:K7EMI4;uniprot:K7EMM5;uniprot:K7EPF8;uniprot:K7EIX3;uniprot:K7EK09 KAT Protein uniprot:Q8N5Z0 "kynurenine aminotransferase ( KAT ; also known as AADAT)" ensembl:ENSG00000109576 ncbigene:51166 hgnc.symbol:AADAT uniprot:D6REB9;uniprot:Q8N5Z0;uniprot:D6RC56;uniprot:D6RFY7;uniprot:Q4W5N8 K3H Protein uniprot:O15229 "kynurenine 3-hydroxylase ( K3H ; also known as KMO)" ensembl:ENSG00000117009 ncbigene:8564 hgnc.symbol:KMO uniprot:H0Y320;uniprot:O15229 KYNU Protein uniprot:Q16719 "kynureninase" ensembl:ENSG00000115919 ncbigene:8942 hgnc.symbol:KYNU uniprot:A0A087WYM2;uniprot:F8WEP1;uniprot:B8ZZA3;uniprot:A0A087WYQ7;uniprot:A0A087X297;uniprot:Q16719 QPRT Protein uniprot:Q15274 "phosphoribosyltransferase" ensembl:ENSG00000103485 ncbigene:23475 hgnc.symbol:QPRT uniprot:H3BP73;uniprot:Q15274 Nmnat2 Protein uniprot:Q9BZQ4 "" ensembl:ENSG00000157064 ncbigene:23057 hgnc.symbol:NMNAT2 uniprot:Q9BZQ4 Nmnat3 Protein uniprot:Q96T66 "" ensembl:ENSG00000163864 ncbigene:349565 hgnc.symbol:NMNAT3 uniprot:A0A2R8YGL3;uniprot:A0A2R8YE08;uniprot:D6REC8;uniprot:A0A2R8YFG2;uniprot:A0A2R8Y594;uniprot:A0A2R8YEU0;uniprot:D6RGG8;uniprot:D6R975;uniprot:Q96T66;uniprot:D6RGH7;uniprot:D6RHV4 Nrk2 Protein uniprot:Q9NPI5 "nicotinamide riboside kinases" ensembl:ENSG00000077009 ncbigene:27231 hgnc.symbol:NMRK2 uniprot:M0R0T8;uniprot:Q9NPI5;uniprot:M0QX67