Involved in the activation cascade of caspases responsible for apoptosis execution. Cleaves and activates sterol regulatory element binding proteins (SREBPs). Proteolytically cleaves poly(ADP-ribose) polymerase (PARP) at a '216-Asp-|-Gly-217' bond. Overexpression promotes programmed cell death.
[1] "Mch3, a novel human apoptotic cysteine protease highly related to CPP32."Fernandes-Alnemri T., Takahashi A., Armstrong R.C., Krebs J., Fritz L.C., Tomaselli K.J., Wang L., Yu Z., Croce C.M., Salveson G., Earnshaw W.C., Litwack G., Alnemri E.S.Cancer