Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 7ngc_G.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): UNK 52.A N UNK 50.A O UNK 52.A H 3.027 2.400