Involved in the activation cascade of caspases responsible for apoptosis execution. Binding of caspase-9 to Apaf-1 leads to activation of the protease which then cleaves and activates caspase-3. Proteolytically cleaves poly(ADP-ribose) polymerase (PARP). Isoform 2 lacks activity is an dominant-negative inhibitor of caspase-9.1) Zou, H. et al. (1999) J. Biol. Chem. 274, 11549-11556. Deveraux, Q. L. et al. (1998) EMBO J. 17, 2215-2223. Li, P. et al. (1997) Cell 91, 479-489.
Immunogen
Caspase 9 antibody was raised against a peptide sequence around aa.301~305 (T-S-P-E-D) derived from Caspase 9.