Calpains are non-lysosomal cysteine proteeases which absolutely require calcium for activity. There are two major calpain isozymes: μ-calpain and m-calpain, which require micromolar or millimolar calicum for activity, respectively, in invitro assays. The major calpain isozymes are composed of two subunits: an 80kDa catalytic subunit; and a 30kDa regulatory subunit. The large and small subunits remain associated in the presence of calcium after proteolytic activation of the zymogen.
Specificity
Reacts with the small subunit of human erthrocyte μ-calpain (Calpain I) or bovine myocardial m-calpain (Calpain II).
Immunogen
Bovine myocardial m-calpain.
Epitope: small subunit of μ- or m-Calpains (Calpain I or II)
Application
Immunoblot: 1:500-1,000. The small subunit of either μ-calpain m-calpain is 30kDa. ELISA: 1:50,000 (against the immunogen). Immunohistochemistry: 1:100 on 4% paraformaldehyde or 1% paraformaldehyde/4% glutaraldehyde fixed tissue. Immunocytochemistry: 1:100. Optimal working dilutions must be determined by the end user.
This Anti-Calpain Antibody, small subunit of μ-or m-Calpains (Calpain I or II), clone P1 is validated for use in ELISA, WB, IC, IH for the detection of Calpain.
Legal Information
CHEMICON is a registered trademark of Merck KGaA, Darmstadt, Germany
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Storage Class Code
10 - Combustible liquids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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