Reaction: Strict requirement for Asp at position P1 and has a preferred cleavage sequence of Leu-Gln-Thr-AspGly
Other name(s): FLICE2, Mch4; CASP-10; ICE-like apoptotic protease 4; apoptotic protease Mch-4; FAS-associated death domain protein interleukin-1β-converting enzyme 2
Comments: Caspase-10 is an initiator caspase, as are caspase-2 (EC 22.214.171.124), caspase-8 (EC 126.96.36.199) and caspase-9 (EC 188.8.131.52) . Like caspase-8, caspase-10 contains two tandem death effector domains (DEDs) in its N-terminal prodomain, and these play a role in procaspase activation . The enzyme has many overlapping substrates in common with caspase-8, such as RIP (the cleavage of which impairs NF-κB survival signalling and starts the cell-death process) and PAK2 (associated with some of the morphological features of apoptosis, such as cell rounding and apoptotic body formation) . Bid, a Bcl2 protein, can be cleaved by caspase-3 (EC 184.108.40.206), caspase-8 and caspase-10 at Lys-Gln-Thr-Asp to yield the pro-apoptotic p15 fragment. The p15 fragment is N-myristoylated and enhances the release of cytochrome c from mitochondria (which, in turn, initiatiates the intrinsic apoptosis pathway). Bid can be further cleaved by caspase-10 and granzyme B but not by caspase-3 or caspase-8 at Ile-Glu-Thr-Asp to yield a p13 fragment that is not N-myristoylated . Belongs in peptidase family C14.
Links to other databases: BRENDA, EXPASY, KEGG, MEROPS, Metacyc, CAS registry number: 189088-85-5
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