| Product description |
Mouse monoclonal [15C10] to Calpain 1Mu Calpain, also known as Calpain I, and m calpain, also known as Calpain II, are intracellular, calcium-dependent cysteine proteases. Mu calpain has a micromolar sensitivity (thus the mu) as compared to the millimolar calcium sensitivity of m calpain. The calpains have papain-like activity, thus the -pain nomenclature. Both m calpain and mu calpain are ubiquitously expressed, and are countered by the endogenous calpain inhibitor, calpastatin. Other calpain family members (calpain 94, ncl2, ncl3, etc) have more limited tissue distribution, and perhaps different functions. The calpain family members consist of a common small subunit (Calpain 4), and a large variable subunit. It is not clear that all calpains contain a small subunit. Domains in the large subunit include the amino terminal domain I, the proteinase domain II, domain III, and the EF hand domain IV. |