... orange. Otherbinding residues (W9AMY2, H92AMY2, T94AMY2, A95AMY2, Y1 30AMY2, A145AMY2, F180AMY2, K182AMY2, W206AMY2,S208AMY2, Y2 11AMY2, H288AMY2, Q294AMY2, M296AMY2 and Q35TAA, ... pat-terns of wild-type and the majority of the mutants, however, reflected the importance of the high-affinity subsite )6[44],where Tyr104AMY1(Tyr105AMY1) was stacking onto gluc-osyl at the nonreducing ... acti-vity in the zymogram and exchange by Asp (Fig. 2) and Glu(not shown) did not significantly decrease the pI.Enzyme kinetic properties of AMY1 mutants The activity of Met53 mutants and wild-type...