Figure 1
The overall structure of the C318A/C315CSD mutant of hBCATm (cartoon; chain A, blue; chain B, light blue) resembles that of wild-type hBCATm. The structure is a homodimer with the PLP linked to Lys202 by a Schiff base. The active-site residues and the CXXC center are shown in stick representation. The phosphate of PLP is shown in orange. (Atom color scheme: carbon, gray; nitrogen, blue; oxygen, red; phosphate, orange; sulfur, yellow.) |