ID 3.4.22.52 DE calpain-1. AN calcium-activated neutral protease I. AN mu-calpain. CA Broad endopeptidase specificity. CC -!- Cytosolic in animal cells. CC -!- The active enzyme molecule is a heterodimer in which the large CC subunit contains the peptidase unit, and the small subunit is also a CC component of EC 3.4.22.53. CC -!- Belongs to peptidase family C2. CC -!- Formerly EC 3.4.22.17 and EC 3.4.24.5. DR Q27970, CAN1_BOVIN ; P07384, CAN1_HUMAN ; Q9GLG2, CAN1_MACFA ; DR O35350, CAN1_MOUSE ; P35750, CAN1_PIG ; Q5NVS7, CAN1_PONAB ; DR P06815, CAN1_RABIT ; P97571, CAN1_RAT ; P00789, CANX_CHICK ; //