Ligand Atom Receptor Atom Distance -- C 50 ASP OD2 A 186 TYR OH 2.76 C 42 HIS ND1 A 177 ASN OD1 2.81 C 55 HIS NE2 A 157 GLY O 2.81 C 89 THR OG1 A 178 ASN O 2.85 C 52 ASN ND2 A 157 GLY O 2.87 C 35 MET O A 180 ARG NH2 2.93