Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 2ena_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): CYS 15.A N LYS 20.A O CYS 15.A H 2.729 1.799 CYS 15.A SG HIS 31.A NE2 no hydrogen 3.719 N/A CYS 18.A SG HIS 31.A NE2 no hydrogen 3.318 N/A CYS 18.A SG HIS 35.A NE2 no hydrogen 3.435 N/A LYS 20.A N CYS 15.A O LYS 20.A H 3.468 2.596 PHE 22.A N PHE 13.A O PHE 22.A H 3.437 2.576 ALA 27.A N GLN 24.A O ALA 27.A H 2.772 1.926 LEU 28.A N GLN 24.A O LEU 28.A H 3.252 2.389 ASN 29.A N ARG 25.A O ASN 29.A H 2.856 1.914 SER 30.A OG SER 26.A O SER 30.A HG 3.501 2.749 HIS 31.A N ALA 27.A O HIS 31.A H 3.295 2.445 ARG 32.A N LEU 28.A O ARG 32.A H 2.885 1.925 MET 33.A N SER 30.A O MET 33.A H 2.993 2.192 ILE 34.A N HIS 31.A O ILE 34.A H 3.094 2.397 HIS 35.A N ARG 32.A O HIS 35.A H 3.127 2.322 HIS 35.A NE2 HIS 31.A NE2 no hydrogen 3.000 N/A THR 36.A N MET 33.A O THR 36.A H 2.632 1.849 GLY 42.A N PRO 40.A O GLY 42.A H 2.907 2.207