3.4.22.53	additional information	-	the enzyme is not proteolytically active at pH 5.8	
3.4.22.53	5	8.5	pH 5.0: about 50% of maximal activity, pH 8.5: about 30% of maximal activity	
3.4.22.53	6	8	pH 6.0: about 40% of maximal activity, pH 8.0: about 50% of maximal activity, enzyme from retina and brain	
3.4.22.53	6	8.5	pH 6.0: about 50% of maximal activity, pH 8.5: about 60% of maximal activity	
3.4.22.53	6.5	8.5	pH 6.5: about 50% of maximal activity, pH 8.5: about 40% of maximal activity	
3.4.22.53	6.5	7.5	activity of m-calpain is greater at pH 7.5 than at pH 6.5