Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 1xn3_I.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): THR 2.A OG1 LYS 1.A O no hydrogen 2.645 N/A ASN 9.A ND2 GLU 7.A OE2 no hydrogen 3.204 N/A