Ligand Atom Receptor Atom Distance -- B 135 GLU OE1 A 100 GLY N 2.73 B 135 GLU N A 125 GLY O 2.79 B 130 LYS NZ A 98 GLY O 2.84 B 170 TYR OH A 182 SER OG 2.87 B 137 HIS CE1 A 99 SER OG 2.89 B 7 HIS NE2 A 96 ALA O 2.90