Involved in the activation cascade of caspases responsible for apoptosis execution. Cleaves poly(ADP-ribose) polymerase in vitro, as well as lamins. Overexpression promotes programmed cell death. Heterotetramer that consists of two anti-parallel arranged heterodimers, each one formed by a 18 kDa (p18) and a 11 kDa (p11) subunit. Interacts with BIRC6/bruce. Activation is suppressed by phosphorylation at Ser-257. Belongs to the peptidase C14A family. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Protease; EC 220.127.116.11; EC 3.4.22.-; Apoptosis
Cellular Component: nucleoplasm; cytosol
Molecular Function: identical protein binding; protein binding; cysteine-type endopeptidase activity; cysteine-type peptidase activity
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.