Fig. 6.

Molecular surface of the active site, together with key residues, and modeled 6-phosphogluconate, a substrate of HI1679. The transparent blue surface delineates the second molecule associated with the active-site formation. Atomic colors are as follows: red, oxygen atoms; blue, nitrogen atoms; gray, protein carbon atoms; green, substrate carbon atoms; and yellow, phosphorus. The molecular surface was generated by the program MSMS⁴³ and was incorporated into Molscript.²⁵. Raster3D²⁷ was used to render the figure.