Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 3twr_E.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): GLN 2.A NE2 ARG 3.A O no hydrogen 3.123 N/A GLN 9.A NE2 PHE 11.A O no hydrogen 2.829 N/A