Matriptases (EC 3.4.21.109) are an enzyme family.[1][2] This enzyme 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
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^Lin CY, Anders J, Johnson M, Sang QA, Dickson RB (June 1999). "Molecular cloning of cDNA for matriptase, a matrix-degrading serine protease with trypsin-like activity". The Journal of Biological Chemistry. 274 (26): 18231–6. doi:10.1074/jbc.274.26.18231. PMID 10373424.