About 100 sphere points were then selected
around the NBD1–NBD2 interface, representing the putative ligand
binding sites, tobeusedbyMDock for orientational searches forATP
and genistein molecules. The default docking parameters in MDock
were used except for ‘‘maximum orientations’’ which was set to
2000 in the present study. Namely, the ligand orientations were
generatedbyautomaticallymatching the ligandatoms to the sphere
points in the binding site. Atom clash check was performed for each
generated ligand orientation. Only those orientationswith less than
four atom clashes between protein and ligand were valid. The
orientation search continued until 2000 valid orientations were
generated or the matching process was exhausted. The obtained
valid ligand orientations were then scored by the ITScore scoring
function and ranked from low to high according to their binding
scores. The top 100 ligand orientations were retained for each
conformer of the ligand. Finally, all the ligand binding orientations
for different conformers of the ligand were reranked according their
scores. The top 500 binding orientations were kept for further
analysis