Figure 2From: Aminopeptidase B, a glucagon-processing enzyme: site directed mutagenesis of the Zn2+-binding motif and molecular modellingEffect of NaCl concentration on His-rAp-B enzymatic activity. Activity was measured using the standard assay method described in Materials and Methods with the indicated NaCl concentrations. Activities are expressed relative to the maximum activity (100%) of the His-rAp-B enzyme obtained in presence of 200 mM NaCl. Bars represent SEM of 3 or more separate assays.Back to article page