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Mouse anti Human Calpain I (large subunit, p80)

Catalogue number: X1013

Product Type Monoclonal Antibody
Units100 µg
Species reactivity Bovine
Application ELISA
Enzyme Immunoassay
Western Blot
Western Blotting

The calpains are calcium-dependent cysteine proteases that are widely expressed in mammalian systems. Both m-calpain (calpain II) and µ-calpain (calpain I) are composed of an 80 kD subunit and a 30 kD subunit. Whereas the 30 kD subunit is shared by both enzymes, the larger catalytic subunits are different and exhibit the distinct Ca ++ requirements that are suggested by their names. Whereas m-calpain requires millimolar (mM) levels of calcium, µ-calpain is active at micromolar (uM) concentrations of Ca ++. In addition to the ubiquitously expressed m- and µcalpains, some tissue-specific calpains have been identified. The calpains appear to serve multiple physiological roles, and ideas concerning the functions of these enzymes are in a state of rapid flux.

Synonyms: Mouse Anti-Calpain I, u-Calpain (Large subunit, p80), Monoclonal Antibody


Immunogen: Hybridoma produced by the fusion of splenocytes from mice immunized with human calpain I purified from placenta with mouse myeloma.


Product Form: Unconjugated

Formulation: Provided as a solution containing phosphate buffered saline, 0.08% sodium azide and 50% glycerol.

Purification Method: Protein A/G Chromatography

Concentration: See vial for concentration

Application: Use at 0.5-1 ug/ml for ELISA and western blot, 1-2ug/ml for immunoprecipitation.

Functional Analysis: Western Blotting

Product should be stored at -20ºC. Aliquot to avoid freeze/thaw cycles

Product Stability: Antibodies are stable for one year from purchase if stored frozen

Shipping Conditions: Ship at ambient temperature, freeze upon arrival

This product is intended FOR RESEARCH USE ONLY, and FOR TESTS IN VITRO, not for use in diagnostic or therapeutic procedures involving humans or animals.

1. Adamec, E., et al. 'Calpain I activation in rat hippocampal neurons in culture is NMDA receptor selective and not essential for excitotoxic cell death.' Brain Res. Mol. Brain Res. 1998, 54, 35-48 2. Guttmann, R.P. et al. 'Oxidation inhibits substrate proteolysis by calpain I but not autolysis.' J. Biol. Chem. 1997, 272, 2005-2012

Protein Reference(s)

Database Name: UniProt

Accession number: P07384

Species Accession: Human

Safety Datasheet(s) for this product:
Sodium Azide

Mouse anti Human Calpain I (large subunit, p80)



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Exalpha Biologicals, Inc.
2 Shaker Road, Unit B101
Shirley, MA 01464
Phone: 978-425-1370