ID 3.4.22.55 DE caspase-2. AN CASP-2. AN ICH-1. AN NEDD-2. AN NEDD2 protein. AN neural precursor cell expressed developmentally down-regulated protein 2. CA Strict requirement for an Asp residue at P1, with 316-Asp being essential CA for proteolytic activity and has a preferred cleavage sequence of Val- CA Asp-Val-Ala-Asp-|-. CC -!- Caspase-2 is an initiator caspase, as are caspases-8 (EC 3.4.22.61), CC caspase-9 (EC 3.4.22.62) and caspase-10 (EC 3.4.22.63). CC -!- Contains a caspase-recruitment domain (CARD) in its N-terminal CC prodomain, which plays a role in procaspase activation. CC -!- Two forms of caspase-2 exist that have antagonistic effects: caspase- CC 2L induces programed cell death and caspase-2S suppresses cell death. CC -!- Caspase-2 is activated by caspase-3 (EC 3.4.22.56), or by a caspase- CC 3-like protease. CC -!- Activation involves cleavage of the N-terminal prodomain, followed by CC self-proteolysis between the large and small subunits of pro-caspase- CC 2 and further proteolysis into smaller fragments. CC -!- Proteolysis occurs at Asp residues and the preferred substrate for CC this enzyme is a pentapeptide rather than a tetrapeptide. CC -!- Apart from itself, the enzyme can cleave golgin-16, which is present CC in the Golgi complex and has a cleavage site that is unique for CC caspase-2. CC -!- alphaII-spectrin, a component of the membrane cytoskeleton, is a CC substrate of the large isoform of pro-caspase-2 (caspase-2L) but not CC of the short isoform (caspase-2S). CC -!- Belongs to peptidase family C14. DR Q98943, CASP2_CHICK; P42575, CASP2_HUMAN; P29594, CASP2_MOUSE; DR P55215, CASP2_RAT ; //