Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 5n5w_P.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): SER 4.A OG PRO 5.A O SER 4.A HG 2.913 2.095