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 126.96.36.199; Motility/polarity/chemotaxis; Protease
Molecular Function: calcium ion binding; calcium-dependent cysteine-type endopeptidase activity; cysteine-type peptidase activity; cytoskeletal protein binding; protein binding; protein heterodimerization activity
Biological Process: blastocyst development; extracellular matrix disassembly; myoblast fusion; protein autoprocessing; proteolysis; proteolysis involved in cellular protein catabolic process; regulation of cytoskeleton organization; response to hypoxia