Matrix metalloproteinases (MMPs) are zinc-dependent endopeptidases; other family members are adamalysins, serralysins, and astacins. The MMPs belong to a larger family of proteases known as the metzincin superfamily. Collectively they are capable of degrading all kinds of extracellular matrix proteins, but also can process a number of bioactive molecules. They are known to be involved in the cleavage of cell surface receptors, the release of apoptotic ligands (such as the FAS ligand), and chemokine/cytokine in/activation. MMPs are also thought to play a major role on cell behaviors such as cell proliferation, migration (adhesion/dispersion), differentiation, angiogenesis, apoptosis and host defense. Source: [[wikipedia:Matrix_metalloproteinase|Wikipedia]] Proteins on this pathway have targeted assays available via the [https://assays.cancer.gov/available_assays?wp_id=WP129 CPTAC Assay Portal] ea5 cell-extracellular matrix signaling pathway PW:0000646 Pathway Ontology protein degradation pathway PW:0000325 Pathway Ontology 10970876 PubMed Matrix metalloproteinases: effectors of development and normal physiology. Genes Dev 2000 Vu TH Werb Z