IUBMB Enzyme Nomenclature


Accepted name: matriptase

Reaction: Cleaves various synthetic substrates with Arg or Lys at the P1 position and prefers small side-chain amino acids, such as Ala and Gly, at the P2 position

Other name(s): serine protease 14; membrane-type serine protease 1; MT-SP1; prostamin; serine protease TADG-15; tumor-associated differentially-expressed gene 15 protein; ST14; breast cancer 80 kDa protease; epithin; serine endopeptidase SNC19

Comments: This trypsin-like integral-membrane serine peptidase has been implicated in breast cancer invasion and metastasis [1,2]. The enzyme can activate hepatocyte growth factor/scattering factor (HGF/SF) by cleavage of the two-chain form at an Arg residue to give active α- and β-HGF, but It does not activate plasminogen, which shares high homology with HGF [1]. The enzyme can also activate urokinase plasminogen activator (uPA), which initiates the matrix-degrading peptidase cascade [1,2]. Belongs in peptidase family S1A.

Links to other databases: BRENDA, EXPASY, KEGG, MEROPS, Metacyc, PDB, CAS registry number: 241475-96-7


1. Lee, S.L., Dickson, R.B. and Lin, C.Y. Activation of hepatocyte growth factor and urokinase/plasminogen activator by matriptase, an epithelial membrane serine protease. J. Biol. Chem. 275 (2000) 36720-36725. [PMID: 10962009]

2. Lin, C.Y., Anders, J., Johnson, M., Sang, Q.A. and Dickson, R.B. Molecular cloning of cDNA for matriptase, a matrix-degrading serine protease with trypsin-like activity. J. Biol. Chem. 274 (1999) 18231-18236. [PMID: 10373424]

[EC created 2006]

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