Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 8cas_O.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): LEU 38.A N TYR 27.A O no hydrogen 2.904 N/A CYS 47.A N ASN 44.A O no hydrogen 3.137 N/A ALA 54.A N TYR 61.A O no hydrogen 2.421 N/A