Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 8cmh_C.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): CYS 3.A SG.B TYR 4.A O no hydrogen 3.230 N/A SER 11.A OG PHE 12.A O no hydrogen 3.197 N/A