Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 1x63_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): CYS 18.A N LYS 23.A O CYS 18.A H 3.148 2.361 CYS 18.A SG VAL 38.A O no hydrogen 3.464 N/A CYS 18.A SG HIS 40.A ND1 no hydrogen 3.495 N/A CYS 21.A SG HIS 40.A ND1 no hydrogen 3.500 N/A ILE 25.A N PRO 16.A O ILE 25.A H 2.650 1.802 ASN 31.A ND2 VAL 26.A O ASN 31.A HD22 2.738 2.140 VAL 32.A N TRP 39.A O VAL 32.A H 2.861 2.025 TYR 34.A N THR 37.A O TYR 34.A H 2.856 1.984 TRP 39.A N VAL 32.A O TRP 39.A H 2.940 2.000 LYS 41.A N GLN 30.A O LYS 41.A H 2.649 1.791 CYS 43.A SG HIS 40.A ND1 no hydrogen 3.668 N/A PHE 44.A N HIS 40.A O PHE 44.A H 2.794 1.842 THR 45.A OG1 CYS 43.A O THR 45.A HG1 3.475 2.620 CYS 46.A N GLN 51.A O CYS 46.A H 3.295 2.548 CYS 46.A SG PHE 65.A O no hydrogen 3.480 N/A SER 47.A N PHE 65.A O SER 47.A H 2.901 2.114 CYS 49.A SG GLN 51.A OE1 no hydrogen 3.378 N/A ILE 53.A N PHE 44.A O ILE 53.A H 2.690 1.825 GLY 54.A N PHE 44.A O GLY 54.A H 3.273 2.338 PHE 59.A N TYR 66.A O PHE 59.A H 2.554 1.792 LYS 61.A N ASP 64.A O LYS 61.A H 2.880 2.031 ASP 64.A N LYS 61.A O ASP 64.A H 3.064 2.228 TYR 66.A N PHE 59.A O TYR 66.A H 2.753 1.831 HIS 71.A N CYS 67.A O HIS 71.A H 2.863 1.896 GLU 72.A N VAL 68.A O GLU 72.A H 2.541 1.754 THR 73.A N THR 69.A O THR 73.A H 2.844 1.968 LYS 74.A N CYS 70.A O LYS 74.A H 2.661 1.798 PHE 75.A N HIS 71.A O PHE 75.A H 3.047 2.258 ALA 76.A N HIS 71.A O ALA 76.A H 2.931 2.154