Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 3u23_B.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): ARG 8.A NH2 LYS 10.A O no hydrogen 2.927 N/A LYS 10.A NZ.B ARG 11.A O no hydrogen 2.869 N/A LYS 10.A NZ.B SER 13.A OG no hydrogen 2.959 N/A