Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 7o07_P.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): SER 4.A OG.A PRO 5.A O no hydrogen 2.955 N/A SER 4.A OG.B PRO 5.A O no hydrogen 2.895 N/A