pfam01067: Calpain_III (this model, PSSM-Id:279416 is obsolete and has been replaced by 395848)
Calpain large subunit, domain III
The function of the domain III and I are currently unknown. Domain II is a cysteine protease and domain IV is a calcium binding domain. Calpains are believed to participate in intracellular signaling pathways mediated by calcium ions.