Caspase 1/ICE (Interleukin-1b Converting Enzyme) is expressed as a proenzyme of 45kD in many tissues. Upon stimulus it gets activated by proteolytic cleavage. Active Caspase 1 is a tetramer of two subunits p10 and p20 in 2;2 proportion. Caspase 1 (cystein aspartic-specific protease 1) cleaves its substrates after an aspartate residue. It cleaves Interleukin b into its active form which further exerts its proinflammatory effects. Overexpression of caspase 1 can induce apoptosis in fibroblast which can be inhibited by overexpression of Crm A, a protein from pox virus.
Applications
Suitable for use in Western Blot, Immunoprecipitation, Immunohistochemistry and Immunocytochemistry. Other applications not tested.
Recommended Dilution
Western Blot: 0.5-4ug/ml Immunocytochemistry: 10-20ug/ml Immunoprecipitation: 4-8ug/ml Immunohistochemistry: 1:50 Optimal dilutions to be determined by the researcher.
Storage and Stability
May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Immunogen
Synthetic peptide corresponding to aa224-242, KTSDSTFLVFMSHGIREG, of human caspase-1.
Form
Supplied as a liquid in PBS, pH 7.2, 0.5% BSA, 0.5mM EDTA, 0.03% Proclin, 30% glycerol.
Purity
Purified by immunoaffinity chromatography.
Specificity
Recognizes human caspase-1. Detects bands of ~45kD (procaspase-1) and ~20kD (cleavage product) by Western Blot. Species Crossreactivity: mouse and rat.