Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 2yto_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 2.973 2.001 CYS 15.A SG HIS 31.A NE2 no hydrogen 3.417 N/A CYS 15.A SG HIS 35.A NE2 no hydrogen 3.579 N/A CYS 18.A SG HIS 31.A NE2 no hydrogen 3.456 N/A CYS 18.A SG HIS 35.A NE2 no hydrogen 3.440 N/A PHE 22.A N TYR 13.A O PHE 22.A H 2.780 1.807 THR 23.A OG1 GLU 10.A O THR 23.A HG1 2.779 1.928 HIS 29.A N LYS 25.A O HIS 29.A H 3.268 2.301 ILE 30.A N SER 26.A O ILE 30.A H 2.981 2.041 GLN 32.A N LEU 28.A O GLN 32.A H 2.779 1.869 GLN 32.A NE2 ASP 17.A OD1 GLN 32.A HE22 3.171 2.303 GLN 33.A N HIS 29.A O GLN 33.A H 3.163 2.229 SER 34.A N HIS 31.A O SER 34.A H 3.117 2.245 THR 36.A N GLN 32.A O THR 36.A H 3.304 2.384 GLY 37.A N SER 34.A O GLY 37.A H 3.027 2.113