Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 4ch9_C.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): ASP 8.A N PRO 5.A O no hydrogen 2.950 N/A GLN 9.A N GLU 6.A O no hydrogen 2.981 N/A GLN 9.A NE2 GLU 4.A O no hydrogen 2.940 N/A