Figure 2
Cysteine residues in IMPase with ebselen bound to Cys141 (PDB entry 6zk0). IMPase is shown as a Cα ribbon trace and the side chains of the seven cysteines are shown as sticks on the `red' subunit. The second subunit in the dimer is shown in cyan. A semi-transparent surface is shown; note that where the S atoms of the cysteine residues are on the surface of the protein, the surface is yellow (Cys24 and Cys141). Cys184 also has some surface accessibility in the monomer, but is largely buried at the dimer interface, so no yellow is visible for Cys184 in this figure. |