Ligand Atom Receptor Atom Distance -- B 125 LYS NZ A 137 GLU OE2 2.59 B 35 ASP OD1 A 130 LYS NZ 2.63 B 43 HIS ND1 A 137 GLU OE2 2.74 B 1 MET N A 146 LEU O 2.78 B 124 SER O A 144 ARG NH2 2.80 B 47 GLU OE1 A 144 ARG NH1 2.81 B 123 GLU OE2 A 142 GLY N 2.89 B 47 GLU OE2 A 144 ARG NH1 2.93