Calpain-2 (CAPN2) Antibody – Rabbit Polyclonal

The calpains, calcium-activated neutral proteases, are nonlysosomal, intracellular cysteine proteases. The mammalian calpains include ubiquitous, stomach-specific, and muscle-specific proteins. The ubiquitous enzymes consist of heterodimers with distinct large, catalytic subunits associated with a common small, regulatory subunit. This gene encodes the large subunit of the ubiquitous enzyme, calpain 2. Multiple heterogeneous transcriptional start sites in the 5' UTR have been reported. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

CAPN2: 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.

Protein type: EC 3.4.22.53; Motility/polarity/chemotaxis; Protease

Chromosomal Location of Human Ortholog: 1q41-q42

Cellular Component: Golgi apparatus; cortical actin cytoskeleton; focal adhesion; endoplasmic reticulum; cytoplasm; dendrite; plasma membrane; pseudopodium; cytosol; nucleus; chromatin; lipid raft

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; proteolysis involved in cellular protein catabolic process; response to hypoxia; proteolysis; myoblast fusion; regulation of cytoskeleton organization and biogenesis