loop_ _struct_site.id _struct_site.details 'P2 site C' ; residues with a contact < 3.7 \%A to an atom in the P2 moiety of the inhibitor in the conformation with _struct_asym.id = C ; 'P2 site D' ; residues with a contact < 3.7 \%A to an atom in the P1 moiety of the inhibitor in the conformation with _struct_asym.id = D) ;