Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 2a20_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): LYS 4.A N ASP 6.A OD2 LYS 4.A H 3.536 2.603 GLY 11.A N LYS 32.A O GLY 11.A H 2.530 1.666 HIS 24.A N PHE 33.A O HIS 24.A H 3.132 2.409 CYS 26.A N THR 31.A O CYS 26.A H 2.765 1.806 SER 27.A N TRP 50.A O SER 27.A H 2.523 1.683 GLN 30.A NE2 TYR 28.A O GLN 30.A HE21 2.946 2.249 PHE 33.A N HIS 24.A O PHE 33.A H 2.580 1.628 CYS 37.A N CYS 34.A O CYS 37.A H 2.913 2.060 GLY 39.A N VAL 51.A O GLY 39.A H 2.862 2.062 VAL 41.A N MET 49.A O VAL 41.A H 2.663 1.774 LEU 43.A N LYS 47.A O LEU 43.A H 3.343 2.515 MET 49.A N VAL 41.A O MET 49.A H 3.178 2.403 VAL 51.A N GLY 39.A O VAL 51.A H 3.045 2.137 ASN 53.A N CYS 37.A O ASN 53.A H 3.447 2.510 ASN 53.A ND2 ARG 36.A O ASN 53.A HD22 3.039 2.143 CYS 55.A N CYS 52.A O CYS 55.A H 2.787 2.024 ARG 56.A N CYS 52.A O ARG 56.A H 2.708 1.729 LYS 57.A N ASN 53.A O LYS 57.A H 3.268 2.521 GLN 58.A N LEU 54.A O GLN 58.A H 3.195 2.333 GLN 59.A N CYS 55.A O GLN 59.A H 2.705 1.836 GLU 60.A N LYS 57.A O GLU 60.A H 3.027 2.120