Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 7ds2_C.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): HIS 2.A ND1.A LYS 3.A O.A no hydrogen 2.408 N/A ARG 20.A NE ILE 18.A O no hydrogen 2.800 N/A ARG 20.A NH2 ILE 18.A O no hydrogen 3.025 N/A