Ligand Atom Receptor Atom Distance -- B 130 LYS NZ A 275 ARG OXT 2.83 B 129 GLU OE2 A 249 HIS ND1 2.84 B 135 GLU OE1 A 275 ARG NH1 2.86 B 150 ASP OD2 A 265 SER OG 2.87 B 133 GLY O A 275 ARG NH2 2.99