Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 4ppp_C.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): HIS 4.A N LYS 1.A O no hydrogen 3.085 N/A LEU 6.A N ILE 2.A O no hydrogen 3.142 N/A LEU 7.A N LEU 3.A O no hydrogen 3.210 N/A