Calcium-regulated non-lysosomal thiol-protease which catalyze limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction. Forms a heterodimer with a small (regulatory) subunit (CAPNS1). Ubiquitous. Activated by 200-1000 micromolar concentrations of calcium and inhibited by calpastatin. Belongs to the peptidase C2 family. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: EC 188.8.131.52; Protease; Motility/polarity/chemotaxis
Molecular Function: protein binding; protein heterodimerization activity; cytoskeletal protein binding; calcium-dependent cysteine-type endopeptidase activity; calcium ion binding; cysteine-type peptidase activity
Biological Process: protein autoprocessing; blastocyst development; response to hypoxia; proteolysis; myoblast fusion
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.