3.2.1.113 4.8 6.8 about half-maximal activity at pH 4.8 and 6.8 135992 3.2.1.113 5.2 6.7 about half-maximal activity at pH 5.2 and 6.7 646583 3.2.1.113 5.2 7.3 about half-maximal activity at pH 5.2 and 7.3, in the presence of egg yolk lyso-phosphatidylcholine 646572 3.2.1.113 5.3 6.6 about half-maximal activity at pH 5.3 and 6.6 646591 3.2.1.113 5.5 7 (Man)8(GlcNAc)2-peptide as substrate 646570 3.2.1.113 5.5 7 about half-maximal activity at pH 5.5 and 7 646570, 646579 3.2.1.113 5.5 7.5 about half-maximal activity at pH 5.5 and 7.5, in the presence of soybean phosphatidylinositol 646572 3.2.1.113 5.5 8 41% activity at pH 5.5, 100% activity at pH 7.0, and 18% activity at pH 8.0 753758 3.2.1.113 6 6.8 50% of the enzyme activity remains at pH 6.0 and 6.8, and activity falls off rapidly above and below these values 753754 3.2.1.113 6 8 the enzyme is active between pH 6.0 and 8.0 754053