Accession ID Name Pfam Type
PF01067 Calpain large subunit, domain III domain

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.
Pfam Range: 95-230 DPAM-Pfam Range: 86-242
Uniprot ID: B7Q089
Pfam Range: 480-614 DPAM-Pfam Range: 476-627
Uniprot ID: Q9N4B2
Pfam Range: 389-530 DPAM-Pfam Range: 382-542
Uniprot ID: G1Q947

References

1: Structure and physiological function of calpains. Sorimachi H, Ishiura S, Suzuki K; Biochem J 1997;328:721-732. PMID:9396712