Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 5ugp_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): ASN 3.A ND2 HIS 42.A O no hydrogen 2.774 N/A GLY 4.A N THR 1.A O no hydrogen 3.205 N/A THR 7.A N ASN 3.A O no hydrogen 2.978 N/A THR 7.A OG1 ASN 3.A O no hydrogen 3.378 N/A THR 7.A OG1 GLY 4.A O no hydrogen 3.326 N/A ASP 8.A N GLY 4.A O no hydrogen 2.937 N/A MET 9.A N GLY 5.A O no hydrogen 3.146 N/A LEU 10.A N ILE 6.A O no hydrogen 2.999 N/A THR 11.A N THR 7.A O no hydrogen 2.940 N/A THR 11.A OG1 THR 7.A O no hydrogen 2.853 N/A GLU 12.A N ASP 8.A O no hydrogen 2.968 N/A LEU 13.A N MET 9.A O no hydrogen 2.932 N/A ALA 14.A N LEU 10.A O no hydrogen 2.762 N/A ASN 15.A N THR 11.A O no hydrogen 2.819 N/A PHE 16.A N GLU 12.A O no hydrogen 2.972 N/A GLU 17.A N LEU 13.A O no hydrogen 2.955 N/A LYS 18.A N ALA 14.A O no hydrogen 2.976 N/A ASN 19.A N ASN 15.A O no hydrogen 2.790 N/A ASN 19.A ND2 ASN 89.A OD1 no hydrogen 2.766 N/A VAL 20.A N PHE 16.A O no hydrogen 2.873 N/A SER 21.A N PHE 16.A O no hydrogen 3.173 N/A SER 21.A OG GLU 17.A OE1 no hydrogen 2.852 N/A ALA 23.A N GLU 17.A O no hydrogen 2.878 N/A TYR 27.A N ALA 23.A O no hydrogen 3.075 N/A ASN 28.A N ILE 24.A O no hydrogen 2.948 N/A ALA 29.A N HIS 25.A O no hydrogen 2.858 N/A TYR 30.A N LYS 26.A O no hydrogen 2.957 N/A ARG 31.A N.A TYR 27.A O no hydrogen 3.059 N/A ARG 31.A N.B TYR 27.A O no hydrogen 3.064 N/A ARG 31.A NH1.B ASP 267.A OD2 no hydrogen 2.736 N/A ARG 31.A NH2.B ASP 267.A OD1 no hydrogen 3.366 N/A ARG 31.A NH2.B ASP 267.A OD2 no hydrogen 3.194 N/A LYS 32.A N ASN 28.A O no hydrogen 2.900 N/A ALA 33.A N ALA 29.A O no hydrogen 2.994 N/A ALA 34.A N TYR 30.A O no hydrogen 2.907 N/A SER 35.A N ARG 31.A O.A no hydrogen 2.920 N/A SER 35.A N ARG 31.A O.B no hydrogen 2.882 N/A SER 35.A OG GLU 323.A O no hydrogen 2.711 N/A VAL 36.A N LYS 32.A O no hydrogen 2.911 N/A ILE 37.A N ALA 33.A O no hydrogen 2.982 N/A ALA 38.A N ALA 34.A O no hydrogen 2.894 N/A LYS 39.A N SER 35.A O no hydrogen 3.386 N/A TYR 40.A N ILE 37.A O no hydrogen 3.092 N/A TYR 40.A OH GLU 49.A OE2 no hydrogen 2.500 N/A ILE 44.A N ASN 3.A OD1 no hydrogen 2.652 N/A LYS 45.A N GLU 49.A OE1 no hydrogen 2.809 N/A GLY 47.A N ASP 65.A OD1 no hydrogen 2.777 N/A GLU 49.A N SER 46.A OG no hydrogen 3.142 N/A ALA 50.A N SER 46.A O no hydrogen 3.272 N/A LYS 51.A N GLY 47.A O no hydrogen 2.785 N/A LYS 52.A N GLU 49.A O no hydrogen 3.344 N/A LEU 53.A N ALA 50.A O no hydrogen 2.851 N/A VAL 56.A N LEU 53.A O no hydrogen 3.328 N/A ALA 61.A N GLY 57.A O no hydrogen 3.044 N/A GLU 62.A N THR 58.A O no hydrogen 2.999 N/A LYS 63.A N LYS 59.A O no hydrogen 3.112 N/A ILE 64.A N ILE 60.A O no hydrogen 2.902 N/A ASP 65.A N ALA 61.A O no hydrogen 3.024 N/A GLU 66.A N GLU 62.A O no hydrogen 3.018 N/A PHE 67.A N LYS 63.A O no hydrogen 2.796 N/A LEU 68.A N ILE 64.A O no hydrogen 2.817 N/A ALA 69.A N ASP 65.A O no hydrogen 2.974 N/A THR 70.A N GLU 66.A O no hydrogen 2.960 N/A THR 70.A OG1 GLU 66.A O no hydrogen 2.889 N/A GLY 71.A N PHE 67.A O no hydrogen 2.633 N/A LYS 72.A N THR 70.A OG1 no hydrogen 3.253 N/A ARG 74.A N GLU 66.A OE2 no hydrogen 2.771 N/A ARG 74.A NE GLU 66.A OE2 no hydrogen 2.965 N/A ARG 74.A NH2 GLU 66.A OE1 no hydrogen 3.165 N/A GLU 77.A N LEU 73.A O no hydrogen 2.892 N/A LYS 78.A N ARG 74.A O no hydrogen 3.052 N/A ILE 79.A N LYS 75.A O no hydrogen 3.208 N/A ARG 80.A N LEU 76.A O no hydrogen 2.838 N/A ARG 80.A NE GLU 12.A OE2 no hydrogen 3.047 N/A ARG 80.A NH2 GLU 12.A OE1 no hydrogen 3.197 N/A GLN 81.A N GLU 77.A O no hydrogen 3.355 N/A ASP 82.A N ILE 79.A O no hydrogen 3.044 N/A SER 85.A N ASP 82.A OD2 no hydrogen 3.006 N/A SER 85.A OG ASP 82.A OD2 no hydrogen 2.769 N/A SER 86.A N ASP 82.A O no hydrogen 2.899 N/A SER 86.A OG ASP 82.A O no hydrogen 2.897 N/A SER 87.A N ASP 83.A O no hydrogen 2.850 N/A SER 87.A OG ASP 83.A O no hydrogen 2.963 N/A ILE 88.A N THR 84.A O no hydrogen 2.948 N/A ASN 89.A N SER 85.A O no hydrogen 2.901 N/A ASN 89.A ND2 SER 85.A O no hydrogen 3.638 N/A PHE 90.A N SER 86.A O no hydrogen 2.981 N/A LEU 91.A N SER 87.A O no hydrogen 2.939 N/A THR 92.A N ILE 88.A O no hydrogen 3.129 N/A THR 92.A OG1 ILE 88.A O no hydrogen 3.551 N/A THR 92.A OG1 ASN 89.A O no hydrogen 3.027 N/A ARG 93.A N PHE 90.A O no hydrogen 2.839 N/A ARG 93.A NE GLU 138.A OE2 no hydrogen 2.743 N/A ARG 93.A NH2 GLU 138.A OE1 no hydrogen 2.859 N/A ARG 93.A NH2 GLU 138.A OE2 no hydrogen 3.114 N/A VAL 94.A N LEU 91.A O no hydrogen 3.022 N/A SER 95.A OG HIS 126.A NE2 no hydrogen 2.793 N/A ILE 97.A N VAL 94.A O no hydrogen 2.968 N/A ALA 102.A N GLY 98.A O no hydrogen 2.892 N/A ARG 103.A N PRO 99.A O no hydrogen 3.116 N/A ARG 103.A NH2 VAL 20.A O no hydrogen 2.896 N/A LYS 104.A N SER 100.A O no hydrogen 2.984 N/A LYS 104.A NZ GLU 108.A OE2 no hydrogen 3.484 N/A PHE 105.A N ALA 101.A O no hydrogen 2.804 N/A VAL 106.A N ALA 102.A O no hydrogen 3.019 N/A ASP 107.A N ARG 103.A O no hydrogen 2.988 N/A GLU 108.A N LYS 104.A O no hydrogen 3.149 N/A GLU 108.A N PHE 105.A O no hydrogen 3.010 N/A GLY 109.A N VAL 106.A O no hydrogen 2.959 N/A ILE 110.A N PHE 105.A O no hydrogen 2.831 N/A LYS 111.A N ASP 115.A OD2 no hydrogen 2.831 N/A THR 112.A N ASP 115.A OD2 no hydrogen 3.021 N/A ASP 115.A N THR 112.A OG1 no hydrogen 3.024 N/A LEU 116.A N THR 112.A O no hydrogen 3.005 N/A ARG 117.A N LEU 113.A O no hydrogen 2.972 N/A LYS 118.A N GLU 114.A O no hydrogen 3.070 N/A LYS 118.A NZ ASP 115.A OD1 no hydrogen 3.300 N/A ASN 119.A N LEU 116.A O no hydrogen 2.991 N/A ASN 119.A ND2 ASP 115.A O no hydrogen 3.049 N/A LYS 122.A N ASN 119.A O no hydrogen 2.911 N/A LEU 123.A N GLU 120.A O no hydrogen 3.033 N/A ASN 124.A N GLN 127.A OE1 no hydrogen 2.935 N/A HIS 125.A NE2 THR 218.A O no hydrogen 2.680 N/A HIS 126.A NE2 SER 95.A OG no hydrogen 2.793 N/A GLN 127.A N ASN 124.A OD1 no hydrogen 2.883 N/A GLN 127.A NE2 GLY 96.A O no hydrogen 3.011 N/A ARG 128.A N ASN 124.A O no hydrogen 2.895 N/A ILE 129.A N HIS 125.A O no hydrogen 3.038 N/A GLY 130.A N HIS 126.A O no hydrogen 2.857 N/A LEU 131.A N GLN 127.A O no hydrogen 2.810 N/A LYS 132.A N ARG 128.A O no hydrogen 3.032 N/A LYS 132.A NZ TYR 133.A OH no hydrogen 3.120 N/A LYS 132.A NZ ASP 217.A OD2 no hydrogen 2.946 N/A TYR 133.A N ILE 129.A O no hydrogen 3.094 N/A TYR 133.A OH ASP 217.A OD1 no hydrogen 2.497 N/A PHE 134.A N LEU 131.A O no hydrogen 3.193 N/A PHE 137.A N TYR 133.A O no hydrogen 2.810 N/A GLU 138.A N GLY 135.A O no hydrogen 3.142 N/A LYS 139.A N ASP 136.A O no hydrogen 2.985 N/A LYS 139.A NZ ASP 136.A OD1 no hydrogen 3.224 N/A ARG 140.A NE SER 178.A OG no hydrogen 2.927 N/A ARG 140.A NH2 SER 178.A O no hydrogen 3.178 N/A ILE 141.A N SER 179.A O no hydrogen 2.815 N/A ARG 143.A N GLU 177.A O no hydrogen 2.984 N/A ARG 143.A NH1 PHE 172.A O no hydrogen 3.060 N/A ARG 143.A NH1 ALA 176.A O no hydrogen 2.988 N/A ARG 143.A NH2 PHE 172.A O no hydrogen 3.437 N/A MET 146.A N PRO 142.A O no hydrogen 3.005 N/A LEU 147.A N ARG 143.A O no hydrogen 2.861 N/A GLN 148.A N GLU 144.A O no hydrogen 3.265 N/A MET 149.A N GLU 145.A O no hydrogen 2.870 N/A GLN 150.A N MET 146.A O no hydrogen 2.770 N/A ASP 151.A N.A LEU 147.A O no hydrogen 3.046 N/A ASP 151.A N.B LEU 147.A O no hydrogen 3.046 N/A ILE 152.A N GLN 148.A O no hydrogen 3.123 N/A VAL 153.A N MET 149.A O no hydrogen 2.917 N/A LEU 154.A N GLN 150.A O no hydrogen 2.890 N/A ASN 155.A N ASP 151.A O.A no hydrogen 3.041 N/A ASN 155.A N ASP 151.A O.B no hydrogen 2.982 N/A ASN 155.A ND2 ASP 151.A O.A no hydrogen 2.963 N/A ASN 155.A ND2 ASP 151.A O.B no hydrogen 3.022 N/A GLU 156.A N ILE 152.A O no hydrogen 2.887 N/A VAL 157.A N VAL 153.A O no hydrogen 2.933 N/A LYS 158.A N LEU 154.A O no hydrogen 2.962 N/A LYS 159.A N ASN 155.A O no hydrogen 3.090 N/A LYS 159.A NZ GLU 156.A OE2 no hydrogen 3.127 N/A VAL 160.A N GLU 156.A O no hydrogen 3.261 N/A VAL 160.A N VAL 157.A O no hydrogen 3.153 N/A ASP 161.A N VAL 157.A O no hydrogen 3.265 N/A GLU 163.A N ASP 161.A OD1 no hydrogen 2.969 N/A TYR 164.A N ASP 161.A O no hydrogen 2.955 N/A TYR 164.A OH LEU 201.A O no hydrogen 2.554 N/A ILE 165.A N THR 187.A O no hydrogen 2.918 N/A THR 167.A N LEU 185.A O.A no hydrogen 2.755 N/A THR 167.A N LEU 185.A O.B no hydrogen 2.754 N/A CYS 169.A N ASP 183.A O no hydrogen 2.742 N/A CYS 169.A SG THR 167.A O no hydrogen 3.530 N/A GLY 170.A N PHE 263.A O no hydrogen 2.714 N/A SER 171.A OG SER 179.A OG no hydrogen 2.759 N/A ARG 173.A N CYS 169.A O no hydrogen 3.147 N/A ARG 173.A NH1 THR 264.A OG1 no hydrogen 2.906 N/A ARG 173.A NH1 GLU 304.A OE1 no hydrogen 3.438 N/A ARG 173.A NH1 GLU 304.A OE2 no hydrogen 3.306 N/A ARG 173.A NH2 GLU 304.A OE2 no hydrogen 2.716 N/A ARG 174.A N GLY 170.A O no hydrogen 3.315 N/A ARG 174.A NE SER 322.A OG no hydrogen 2.767 N/A ARG 174.A NH1 THR 264.A O no hydrogen 2.855 N/A GLY 175.A N PHE 172.A O no hydrogen 2.907 N/A ALA 176.A N SER 171.A O no hydrogen 3.068 N/A SER 179.A N ILE 141.A O no hydrogen 2.991 N/A SER 179.A OG SER 171.A OG no hydrogen 2.759 N/A MET 182.A N ARG 245.A O no hydrogen 3.080 N/A VAL 184.A N ASP 247.A O no hydrogen 2.887 N/A LEU 185.A N.A THR 167.A O no hydrogen 2.671 N/A LEU 185.A N.B THR 167.A O no hydrogen 2.670 N/A LEU 186.A N ARG 249.A O no hydrogen 2.794 N/A THR 187.A N ILE 165.A O no hydrogen 2.914 N/A HIS 188.A NE2 ASP 161.A OD2 no hydrogen 2.690 N/A SER 190.A N HIS 188.A ND1 no hydrogen 2.950 N/A SER 190.A OG GLN 198.A OE1 no hydrogen 3.202 N/A PHE 191.A N HIS 188.A O no hydrogen 3.037 N/A THR 192.A N SER 195.A O no hydrogen 2.905 N/A THR 192.A OG1 SER 195.A O no hydrogen 3.475 N/A SER 193.A N ASP 254.A OD2 no hydrogen 2.815 N/A SER 193.A OG ASP 254.A OD1 no hydrogen 2.541 N/A SER 193.A OG ASP 254.A OD2 no hydrogen 3.388 N/A GLU 194.A N THR 192.A OG1 no hydrogen 3.097 N/A SER 195.A N THR 192.A O no hydrogen 3.312 N/A SER 195.A N THR 192.A OG1 no hydrogen 3.184 N/A LYS 197.A N SER 190.A O no hydrogen 2.907 N/A GLN 198.A NE2 GLN 204.A OE1 no hydrogen 3.557 N/A GLN 204.A N LYS 200.A O no hydrogen 2.884 N/A VAL 206.A N LEU 202.A O no hydrogen 3.030 N/A GLU 207.A N HIS 203.A O no hydrogen 2.749 N/A GLN 208.A N GLN 204.A O no hydrogen 3.017 N/A GLN 208.A NE2 GLU 156.A OE1 no hydrogen 2.696 N/A LEU 209.A N VAL 205.A O no hydrogen 3.006 N/A GLN 210.A N VAL 206.A O no hydrogen 2.850 N/A LYS 211.A N GLU 207.A O no hydrogen 2.819 N/A VAL 212.A N GLN 208.A O no hydrogen 3.234 N/A HIS 213.A N GLN 210.A O no hydrogen 2.849 N/A PHE 214.A N LEU 209.A O no hydrogen 2.794 N/A ILE 215.A N LEU 209.A O no hydrogen 2.989 N/A THR 216.A N VAL 229.A O no hydrogen 2.842 N/A THR 216.A OG1 ASP 217.A OD1 no hydrogen 2.805 N/A LEU 219.A N MET 227.A O.A no hydrogen 2.617 N/A LEU 219.A N MET 227.A O.B no hydrogen 2.683 N/A SER 220.A N MET 227.A O.A no hydrogen 2.988 N/A SER 220.A N MET 227.A O.B no hydrogen 3.016 N/A LYS 221.A NZ HIS 203.A ND1 no hydrogen 2.927 N/A GLY 222.A N LYS 225.A O no hydrogen 2.933 N/A PHE 226.A N ILE 248.A O no hydrogen 2.861 N/A MET 227.A N.A SER 220.A O no hydrogen 2.889 N/A MET 227.A N.B SER 220.A O no hydrogen 2.890 N/A GLY 228.A N ILE 246.A O no hydrogen 2.884 N/A VAL 229.A N ASP 217.A O no hydrogen 2.955 N/A CYS 230.A N ARG 244.A O no hydrogen 2.805 N/A CYS 230.A SG ARG 244.A O no hydrogen 3.850 N/A GLN 231.A N PHE 214.A O no hydrogen 2.891 N/A GLN 231.A NE2 GLU 240.A OE1 no hydrogen 3.076 N/A GLN 231.A NE2 TYR 241.A O no hydrogen 2.856 N/A LYS 235.A N GLU 238.A OE1 no hydrogen 3.179 N/A GLU 238.A N LYS 235.A O no hydrogen 2.967 N/A HIS 243.A N ASP 136.A OD2 no hydrogen 2.801 N/A ARG 244.A N CYS 230.A O no hydrogen 2.802 N/A ARG 244.A NH1 ARG 140.A O no hydrogen 3.301 N/A ARG 244.A NH2 GLU 145.A OE1 no hydrogen 2.852 N/A ARG 245.A NH1 GLY 228.A O no hydrogen 2.981 N/A ARG 245.A NH1 ILE 246.A O no hydrogen 3.078 N/A ARG 245.A NH1 ASP 247.A OD1 no hydrogen 3.010 N/A ARG 245.A NH2 ASP 247.A OD1 no hydrogen 2.774 N/A ILE 246.A N GLY 228.A O no hydrogen 3.044 N/A ASP 247.A N MET 182.A O no hydrogen 2.978 N/A ILE 248.A N PHE 226.A O no hydrogen 2.916 N/A ARG 249.A N VAL 184.A O no hydrogen 2.938 N/A ARG 249.A NH1 GLU 286.A OE2 no hydrogen 3.043 N/A ARG 249.A NH2 GLU 286.A OE2 no hydrogen 2.662 N/A LEU 250.A N THR 224.A O no hydrogen 2.811 N/A ILE 251.A N LEU 186.A O no hydrogen 2.990 N/A LYS 253.A N PHE 191.A O no hydrogen 3.038 N/A GLN 255.A N PRO 252.A O no hydrogen 2.855 N/A GLY 259.A N GLN 255.A O no hydrogen 3.073 N/A VAL 260.A N TYR 256.A O no hydrogen 2.696 N/A LEU 261.A N TYR 257.A O no hydrogen 2.989 N/A TYR 262.A N CYS 258.A O no hydrogen 3.080 N/A PHE 263.A N GLY 259.A O no hydrogen 2.922 N/A THR 264.A N VAL 260.A O no hydrogen 2.978 N/A THR 264.A OG1 VAL 260.A O no hydrogen 2.738 N/A GLY 265.A N LEU 261.A O no hydrogen 3.399 N/A GLY 265.A N TYR 262.A O no hydrogen 3.196 N/A SER 266.A N ARG 321.A O no hydrogen 3.054 N/A SER 266.A OG ARG 321.A O no hydrogen 3.371 N/A SER 266.A OG GLU 323.A OXT no hydrogen 2.573 N/A ILE 268.A N ASP 267.A OD1 no hydrogen 2.724 N/A PHE 269.A N SER 266.A OG no hydrogen 3.082 N/A ASN 270.A N SER 266.A O no hydrogen 2.881 N/A ASN 270.A ND2 TYR 262.A O no hydrogen 2.836 N/A LYS 271.A N ASP 267.A O no hydrogen 2.948 N/A ASN 272.A N ILE 268.A O no hydrogen 2.848 N/A ASN 272.A ND2 GLU 323.A OE1 no hydrogen 2.601 N/A MET 273.A N PHE 269.A O no hydrogen 2.802 N/A ARG 274.A N ASN 270.A O no hydrogen 2.795 N/A ALA 275.A N LYS 271.A O no hydrogen 2.932 N/A HIS 276.A N ASN 272.A O no hydrogen 2.920 N/A HIS 276.A NE2 ILE 311.A O no hydrogen 2.909 N/A ALA 277.A N MET 273.A O no hydrogen 2.906 N/A LEU 278.A N ARG 274.A O no hydrogen 3.011 N/A GLU 279.A N ALA 275.A O no hydrogen 3.161 N/A LYS 280.A N HIS 276.A O no hydrogen 2.895 N/A LYS 280.A NZ GLN 312.A OE1 no hydrogen 2.996 N/A GLY 281.A N LEU 278.A O no hydrogen 2.807 N/A PHE 282.A N ALA 277.A O no hydrogen 2.788 N/A THR 283.A N ARG 290.A O.A no hydrogen 2.736 N/A THR 283.A N ARG 290.A O.B no hydrogen 2.737 N/A ASN 285.A N THR 288.A O no hydrogen 3.028 N/A GLU 286.A N GLU 286.A OE1 no hydrogen 2.797 N/A TYR 287.A N ASN 285.A OD1 no hydrogen 2.918 N/A THR 288.A N ASN 285.A OD1 no hydrogen 2.835 N/A THR 288.A OG1 ASN 285.A OD1 no hydrogen 3.324 N/A ARG 290.A N.A THR 283.A O no hydrogen 2.917 N/A ARG 290.A N.B THR 283.A O no hydrogen 2.915 N/A ARG 290.A NE.A THR 288.A OG1 no hydrogen 3.125 N/A ARG 290.A NH1.A GLY 296.A O no hydrogen 3.106 N/A LEU 292.A N GLY 281.A O no hydrogen 3.054 N/A GLY 293.A N VAL 294.A O no hydrogen 2.855 N/A GLY 296.A N PRO 291.A O no hydrogen 2.794 N/A LEU 299.A N ILE 289.A O no hydrogen 2.966 N/A ASP 302.A N ASP 306.A OD2 no hydrogen 2.824 N/A LYS 305.A NZ ASP 309.A OD1 no hydrogen 3.541 N/A LYS 305.A NZ ASP 309.A OD2 no hydrogen 3.199 N/A ASP 306.A N SER 303.A O no hydrogen 3.241 N/A ASP 306.A N SER 303.A OG no hydrogen 3.066 N/A ILE 307.A N GLU 304.A O no hydrogen 3.072 N/A ASP 309.A N LYS 305.A O no hydrogen 2.885 N/A TYR 310.A N ASP 306.A O no hydrogen 3.094 N/A TYR 310.A OH PRO 300.A O no hydrogen 2.702 N/A GLN 312.A N ASP 309.A O no hydrogen 2.924 N/A TRP 313.A N PHE 308.A O no hydrogen 2.981 N/A ARG 316.A NH1 GLU 323.A OE2 no hydrogen 3.363 N/A ARG 316.A NH2 ASP 320.A O no hydrogen 2.884 N/A ARG 316.A NH2 GLU 323.A OE2 no hydrogen 2.606 N/A LYS 319.A NZ ASP 320.A OD2 no hydrogen 2.896 N/A ASP 320.A N GLU 317.A O no hydrogen 2.841 N/A ARG 321.A N PRO 318.A O no hydrogen 2.857 N/A ARG 321.A NE ARG 316.A O no hydrogen 2.770 N/A ARG 321.A NH1 GLU 304.A OE1 no hydrogen 2.771 N/A ARG 321.A NH2 GLU 304.A OE1 no hydrogen 3.044 N/A ARG 321.A NH2 ARG 316.A O no hydrogen 2.865 N/A GLU 323.A N ARG 321.A O no hydrogen 2.952 N/A