Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 2en4_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): TYR 13.A N PHE 22.A O TYR 13.A H 3.110 2.346 CYS 15.A N LYS 20.A O CYS 15.A H 2.709 1.864 CYS 15.A SG HIS 31.A NE2 no hydrogen 3.999 N/A CYS 15.A SG HIS 35.A NE2 no hydrogen 3.927 N/A CYS 18.A SG HIS 31.A NE2 no hydrogen 3.312 N/A PHE 22.A N TYR 13.A O PHE 22.A H 2.646 1.897 LEU 28.A N ARG 25.A O LEU 28.A H 2.514 1.799 THR 29.A N ARG 25.A O THR 29.A H 2.771 1.873 THR 30.A N SER 26.A O THR 30.A H 3.086 2.149 THR 30.A OG1 SER 26.A O THR 30.A HG1 2.997 2.515 HIS 31.A N LEU 28.A O HIS 31.A H 2.683 1.816 GLN 32.A N LEU 28.A O GLN 32.A H 2.993 2.124 VAL 33.A N THR 29.A O VAL 33.A H 3.150 2.409 ILE 34.A N HIS 31.A O ILE 34.A H 3.130 2.172 HIS 35.A N GLN 32.A O HIS 35.A H 2.764 1.893 THR 36.A N VAL 33.A O THR 36.A H 2.895 2.097