or
Calpain I Porcine Erythrocytes (m-Calpain). Liquid. In 20 mM imidazole-HCl 5 mM b-mercaptthanol 1 mM EDTA 1 mM EGTA 30% glycerol pH 6.8. DO NOT FREEZE. Ca2+-dependent cysteine proteinase with low Ca2+ requirement (half-maximal activation = 2 mM).