Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 9k2u_C.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): LYS 3.A NZ GLU 4.A O no hydrogen 2.901 N/A ALA 9.A N VAL 6.A O no hydrogen 3.377 N/A