Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 8cir_C.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): SER 3.A N GLY 1.A O no hydrogen 3.003 N/A TRP 4.A NE1 ASP 8.A O no hydrogen 2.847 N/A