Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 7tzk_C.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): SER 11.A N ASN 10.A OD1 SER 11.A H 2.648 1.993