Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 4r8t_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): ARG 9.A NH2 ASP 12.A OD2 ARG 9.A HH21 2.698 1.840 ALA 19.A N GLU 16.A O ALA 19.A H 3.293 2.615 ALA 20.A N MET 17.A O ALA 20.A H 2.970 2.279 ILE 21.A N MET 17.A O ILE 21.A H 3.268 2.478