Figure 5
Stereoview of the Leu151 gate in the active site of cyanase. (a) In the top view, Leu151 (magenta) with Ser122′ and Ile124′ (green) forms an entrance to the active site. On the opposite side, Leu151′ with Ser122 and Ile124 forms another entry to the active site. (b) In the front view, the upper part of the Leu151 pair divides the broad cavity into two parts. The active-site cavity is shown as a brown surface. |