Ligand Atom Receptor Atom Distance -- B 89 THR OG1 A 212 ASN O 2.68 B 42 HIS NE2 A 175 ASP OD2 2.74 B 55 HIS NE2 A 204 PRO O 2.80 B 42 HIS ND1 A 182 SER OG 2.82 B 87 TYR N A 60 ASN OD1 2.88