3.4.22.29 6 9.2 about half-maximal activity at pH 6 and 9.2, synthetic peptide P8-P8' as substrate 648036 3.4.22.29 7 9 pH 7.0: about 50% of maximal activity, pH 9.0: about 35% of maximal activity, reaction with 2-aminobenzoic acid-Arg-Pro-Ile-Ile-Thr-Thr-Ala-Gly-Pro-Ser-Phe(NO2)-Ala-OH 648052