ID 3.4.21.39 DE Chymase. AN Mast cell protease I. AN Skeletal muscle (SK) protease. CA Preferential cleavage: Phe-|-Xaa > Tyr-|-Xaa > Trp-|-Xaa > Leu-|-Xaa. CC -!- In mast cell granules. CC -!- Belongs to peptidase family S1. PR PROSITE; PDOC00124; DR P21842, CMA1_CANFA ; A7WPL7, CMA1_CAVPO ; P23946, CMA1_HUMAN ; DR P56435, CMA1_MACFA ; P21844, CMA1_MOUSE ; P52195, CMA1_PAPHA ; DR P85202, CMA1_RABIT ; P50339, CMA1_RAT ; P09650, MCPT1_RAT ; //