GCMC water locations top to bottom for ligands E (purple),
F (light
blue), and G (green) shown as sticks. Additional water sites are observed
for all three ligands, in the lower, right region of the GCMC box,
but as they are unperturbed by changes to the ligand they have been
excluded for clarity, shown in Figure S.3. Protein is represented as a cartoon, with residues shown as lines.
Carbon atoms are colored per ligand, with oxygen (red), nitrogen (dark
blue), chlorine (yellow), and hydrogen (white). Any nonpolar hydrogen
atoms are removed for clarity. Hydrogen bonding (yellow dash) interactions
are shown, determined using pymol.55 GCMC
hydration sites have been labeled a – d, with water occupancies labeled for waters that are present
<95% of the simulation. Water locations have been calculated by
clustering,48 and a representative snapshot
of the simulation is shown that represents the cluster centers.