Ligand Atom Receptor Atom Distance -- B 57 GLU OE2 A 19 ARG NH2 2.82 B 58 GLN O A 81 TYR OH 2.86 B 57 GLU N A 51 PHE CZ 2.90 B 57 GLU O A 51 PHE CE2 2.90 B 57 GLU O A 51 PHE CZ 2.90 B 55 GLU O A 66 TRP CH2 2.94 B 57 GLU OE1 A 19 ARG NH1 2.95 B 86 ASP OD2 A 49 ILE CG2 2.98