Involved in the activation cascade of caspases responsible for apoptosis execution (PubMed:7596430).
At the onset of apoptosis it proteolytically cleaves poly(ADP-ribose) polymerase (PARP) at a '216-Asp-|-Gly-217' bond (PubMed:7774019).
Cleaves and activates sterol regulatory element binding proteins (SREBPs) between the basic helix-loop-helix leucine zipper domain and the membrane attachment domain. Cleaves and activates caspase-6, -7 and -9 (PubMed:7596430).
Involved in the cleavage of huntingtin (PubMed:8696339).