Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 6sok_P.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): GLN 4.A N HIS 2.A ND1 no hydrogen 2.989 N/A PHE 5.A N HIS 2.A O no hydrogen 3.168 N/A GLU 6.A N PRO 3.A O no hydrogen 3.143 N/A