Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 6zrq_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): SER 15.A OG THR 16.A O SER 15.A HG 3.557 3.109