Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 2x7d_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): LYS 1.A N ASN 330.A O no hydrogen 3.397 N/A ASN 2.A ND2 LYS 326.A O no hydrogen 3.001 N/A ILE 3.A N ILE 328.A O no hydrogen 2.852 N/A GLN 4.A N THR 299.A O no hydrogen 3.091 N/A GLN 4.A NE2 SER 300.A OG no hydrogen 2.741 N/A VAL 5.A N ASP 53.A OD2 no hydrogen 2.944 N/A VAL 6.A N ILE 301.A O no hydrogen 2.844 N/A VAL 7.A N MET 54.A O no hydrogen 3.238 N/A ARG 8.A N ALA 303.A O no hydrogen 2.845 N/A ARG 8.A NH1 GLN 62.A OE1 no hydrogen 2.809 N/A ARG 8.A NH1 THR 98.A OG1 no hydrogen 2.927 N/A ARG 8.A NH2 THR 60.A O no hydrogen 3.284 N/A ARG 8.A NH2 GLN 62.A OE1 no hydrogen 3.180 N/A CYS 9.A N PHE 56.A O no hydrogen 3.016 N/A CYS 9.A SG ARG 10.A O no hydrogen 3.323 N/A CYS 9.A SG ILE 305.A O no hydrogen 3.930 N/A ARG 10.A N ILE 305.A O no hydrogen 3.026 N/A ARG 10.A NE GLY 92.A O no hydrogen 3.069 N/A ARG 10.A NH1 PRO 11.A O no hydrogen 2.984 N/A ARG 10.A NH1 GLU 16.A OE1 no hydrogen 2.954 N/A ARG 10.A NH1 GLU 16.A OE2 no hydrogen 3.551 N/A ARG 10.A NH2 GLU 16.A OE2 no hydrogen 2.860 N/A ASN 13.A N GLU 16.A OE1 no hydrogen 2.730 N/A GLU 16.A N ASN 13.A O no hydrogen 3.082 N/A GLU 16.A N ASN 13.A OD1 no hydrogen 3.090 N/A ARG 17.A N ASN 13.A O no hydrogen 3.111 N/A LYS 18.A N LEU 14.A O no hydrogen 2.815 N/A ALA 19.A N ALA 15.A O no hydrogen 3.219 N/A ALA 19.A N GLU 16.A O no hydrogen 3.038 N/A SER 20.A N ARG 17.A O no hydrogen 2.655 N/A ALA 21.A N GLU 16.A O no hydrogen 3.006 N/A SER 23.A OG VAL 25.A O no hydrogen 2.954 N/A ILE 24.A N PRO 307.A O no hydrogen 2.918 N/A VAL 25.A N SER 23.A OG no hydrogen 2.936 N/A GLU 26.A N SER 35.A O no hydrogen 2.876 N/A ASP 28.A N GLU 33.A O no hydrogen 2.840 N/A VAL 30.A N ASP 28.A OD1 no hydrogen 2.906 N/A ARG 31.A N ASP 28.A OD1 no hydrogen 3.299 N/A ARG 31.A NE.A ASP 28.A OD2 no hydrogen 2.070 N/A GLU 33.A N ASP 28.A O no hydrogen 3.083 N/A VAL 34.A N TYR 50.A O no hydrogen 2.860 N/A SER 35.A N GLU 26.A O no hydrogen 2.756 N/A VAL 36.A N LYS 48.A O no hydrogen 2.681 N/A ARG 37.A N ILE 24.A O no hydrogen 2.935 N/A THR 38.A N SER 46.A O no hydrogen 3.168 N/A SER 45.A OG.A SER 46.A O no hydrogen 3.531 N/A SER 45.A OG.B ALA 42.A O no hydrogen 3.282 N/A SER 46.A N GLY 39.A O no hydrogen 3.239 N/A ARG 47.A NE SER 35.A OG no hydrogen 2.949 N/A ARG 47.A NH2 SER 35.A O no hydrogen 2.958 N/A LYS 48.A N VAL 36.A O no hydrogen 2.766 N/A TYR 50.A N VAL 34.A O no hydrogen 2.862 N/A TYR 50.A OH GLU 320.A OE2 no hydrogen 2.708 N/A PHE 52.A N LYS 32.A O no hydrogen 2.961 N/A ASP 53.A N VAL 5.A O no hydrogen 2.891 N/A PHE 56.A N VAL 7.A O no hydrogen 2.797 N/A THR 60.A N GLY 57.A O no hydrogen 2.973 N/A THR 60.A OG1 GLY 57.A O no hydrogen 2.648 N/A GLN 62.A NE2 PHE 97.A O no hydrogen 2.783 N/A GLN 62.A NE2 LEU 116.A O no hydrogen 2.954 N/A ASP 64.A N LYS 61.A O no hydrogen 2.939 N/A VAL 65.A N LYS 61.A O no hydrogen 3.404 N/A TYR 66.A N GLN 62.A O no hydrogen 2.949 N/A ARG 67.A N ILE 63.A O no hydrogen 2.879 N/A SER 68.A N ASP 64.A O no hydrogen 3.096 N/A SER 68.A OG ASP 64.A O no hydrogen 2.922 N/A VAL 69.A N VAL 65.A O no hydrogen 2.859 N/A VAL 70.A N TYR 66.A O no hydrogen 2.842 N/A CYS 71.A N TYR 66.A O no hydrogen 2.893 N/A CYS 71.A SG.A TYR 66.A O no hydrogen 4.026 N/A LEU 74.A N VAL 70.A O no hydrogen 2.825 N/A ASP 75.A N CYS 71.A O no hydrogen 3.079 N/A GLU 76.A N PRO 72.A O no hydrogen 3.171 N/A VAL 77.A N ILE 73.A O no hydrogen 2.821 N/A ILE 78.A N LEU 74.A O no hydrogen 2.820 N/A MET 79.A N ASP 75.A O no hydrogen 3.072 N/A GLY 80.A N VAL 77.A O no hydrogen 2.851 N/A TYR 81.A N GLU 76.A O no hydrogen 3.088 N/A ASN 82.A ND2 ASN 335.A OD1 no hydrogen 3.422 N/A CYS 83.A N LYS 244.A O no hydrogen 2.734 N/A CYS 83.A SG ILE 73.A O no hydrogen 3.836 N/A THR 84.A N ARG 298.A O no hydrogen 2.940 N/A THR 84.A OG1 ASN 246.A OD1 no hydrogen 3.463 N/A THR 84.A OG1 SER 292.A OG no hydrogen 2.585 N/A ILE 85.A N ASN 246.A O no hydrogen 2.814 N/A PHE 86.A N SER 300.A O no hydrogen 2.966 N/A ALA 87.A N VAL 248.A O no hydrogen 2.895 N/A TYR 88.A N ILE 302.A O no hydrogen 2.823 N/A THR 91.A N GLU 254.A OE1 no hydrogen 2.858 N/A THR 91.A OG1 GLU 254.A OE1 no hydrogen 3.309 N/A THR 91.A OG1 GLU 254.A OE2 no hydrogen 2.540 N/A THR 93.A N GLN 90.A O no hydrogen 3.087 N/A THR 93.A OG1 GLN 90.A O no hydrogen 2.635 N/A THR 93.A OG1 THR 304.A O no hydrogen 3.303 N/A THR 93.A OG1 THR 304.A OG1 no hydrogen 2.662 N/A LYS 95.A NZ GLY 89.A O no hydrogen 2.925 N/A THR 96.A OG1 ASP 249.A OD2 no hydrogen 2.684 N/A THR 98.A N GLY 94.A O no hydrogen 3.034 N/A THR 98.A OG1 GLY 94.A O no hydrogen 2.872 N/A MET 99.A N LYS 95.A O no hydrogen 3.004 N/A GLU 100.A N THR 96.A O no hydrogen 2.725 N/A GLY 101.A N THR 96.A O no hydrogen 3.143 N/A GLU 102.A N LEU 116.A O no hydrogen 3.196 N/A ARG 103.A NE ASP 114.A OD2 no hydrogen 2.722 N/A ARG 103.A NH1 TYR 195.A OH no hydrogen 2.933 N/A ARG 103.A NH2 TYR 109.A O no hydrogen 2.771 N/A ARG 103.A NH2 ASP 114.A OD2 no hydrogen 2.975 N/A SER 104.A N ASP 114.A OD1 no hydrogen 3.277 N/A SER 104.A N ASP 114.A OD2 no hydrogen 2.819 N/A SER 104.A OG ASP 114.A OD1 no hydrogen 2.428 N/A GLU 108.A N PRO 105.A O no hydrogen 3.467 N/A THR 110.A N GLU 113.A OE2 no hydrogen 3.277 N/A GLU 113.A N THR 110.A O no hydrogen 3.013 N/A ASP 114.A N TRP 111.A O no hydrogen 3.391 N/A LEU 116.A N ASP 114.A OD1 no hydrogen 3.010 N/A ALA 117.A N ASP 114.A O no hydrogen 3.097 N/A GLY 118.A N GLU 100.A O no hydrogen 2.909 N/A ILE 119.A N THR 98.A O no hydrogen 3.132 N/A ILE 120.A N MET 99.A O no hydrogen 2.958 N/A ARG 122.A N GLY 118.A O no hydrogen 3.215 N/A ARG 122.A NE ALA 117.A O no hydrogen 3.005 N/A ARG 122.A NH2 ALA 117.A O no hydrogen 3.362 N/A THR 123.A N ILE 119.A O no hydrogen 2.834 N/A THR 123.A OG1 ILE 119.A O no hydrogen 2.701 N/A LEU 124.A N ILE 120.A O no hydrogen 3.173 N/A HIS 125.A N PRO 121.A O no hydrogen 2.909 N/A HIS 125.A NE2 GLU 112.A OE1 no hydrogen 3.127 N/A GLN 126.A N ARG 122.A O no hydrogen 2.811 N/A ILE 127.A N THR 123.A O no hydrogen 2.998 N/A LYS 130.A N GLN 126.A O no hydrogen 2.826 N/A LEU 131.A N ILE 127.A O no hydrogen 3.186 N/A THR 132.A N GLU 129.A O no hydrogen 3.385 N/A THR 132.A OG1 PHE 128.A O no hydrogen 3.299 N/A THR 132.A OG1 GLU 129.A O no hydrogen 2.741 N/A THR 136.A N ASN 134.A OD1 no hydrogen 3.180 N/A GLU 137.A N LYS 230.A O no hydrogen 2.716 N/A SER 139.A N HIS 228.A O no hydrogen 3.021 N/A LYS 141.A N THR 226.A O no hydrogen 2.956 N/A VAL 142.A N ILE 186.A O no hydrogen 2.864 N/A SER 143.A N SER 224.A O no hydrogen 3.005 N/A LEU 145.A N VAL 222.A O no hydrogen 3.018 N/A GLU 146.A N PHE 153.A O no hydrogen 2.916 N/A ILE 147.A N HIS 220.A O no hydrogen 2.792 N/A TYR 148.A N GLU 151.A O no hydrogen 2.990 N/A TYR 148.A OH ASN 213.A O no hydrogen 2.822 N/A GLU 151.A N TYR 148.A O no hydrogen 2.977 N/A PHE 153.A N GLU 146.A O no hydrogen 2.834 N/A LEU 155.A N LEU 144.A O no hydrogen 3.014 N/A LEU 156.A N ASP 154.A OD1 no hydrogen 2.880 N/A ASN 157.A N ASP 154.A OD1 no hydrogen 3.218 N/A SER 159.A N ASN 157.A OD1 no hydrogen 2.874 N/A SER 160.A N ASN 157.A O no hydrogen 3.524 N/A SER 160.A OG ASP 161.A O no hydrogen 3.283 N/A ASP 161.A N GLU 164.A OE1 no hydrogen 3.205 N/A SER 163.A N ASP 161.A OD2 no hydrogen 3.034 N/A SER 163.A OG ASP 161.A OD2 no hydrogen 3.190 N/A GLU 164.A N ASP 161.A O no hydrogen 3.155 N/A ARG 165.A NE GLU 151.A OE2 no hydrogen 2.676 N/A ARG 165.A NH1 SER 163.A O no hydrogen 3.233 N/A ARG 165.A NH2 GLU 151.A OE2 no hydrogen 2.714 N/A LEU 166.A N LEU 152.A O no hydrogen 2.909 N/A PHE 169.A N ILE 179.A O no hydrogen 2.841 N/A ASP 171.A N GLY 177.A O no hydrogen 3.178 N/A ARG 173.A N ASP 171.A OD1 no hydrogen 2.936 N/A ASN 174.A N ASP 171.A O no hydrogen 2.861 N/A ASN 174.A ND2 ASP 171.A OD2 no hydrogen 3.087 N/A ILE 179.A N PHE 169.A O no hydrogen 2.588 N/A LYS 181.A N GLN 167.A O no hydrogen 2.896 N/A LEU 183.A N ILE 180.A O no hydrogen 3.290 N/A GLU 184.A N ASP 154.A OD2 no hydrogen 2.818 N/A ILE 186.A N VAL 142.A O no hydrogen 2.933 N/A VAL 188.A N VAL 140.A O no hydrogen 2.847 N/A HIS 189.A N GLU 193.A OE1 no hydrogen 2.732 N/A HIS 189.A ND1 GLU 193.A OE1 no hydrogen 2.708 N/A LYS 191.A NZ GLU 112.A OE1 no hydrogen 2.608 N/A LYS 191.A NZ GLU 112.A OE2 no hydrogen 3.298 N/A ASP 192.A N ASN 190.A OD1 no hydrogen 2.665 N/A GLU 193.A N ASN 190.A O no hydrogen 2.993 N/A VAL 194.A N LYS 191.A O no hydrogen 3.297 N/A LEU 198.A N VAL 194.A O no hydrogen 3.122 N/A GLU 199.A N TYR 195.A O no hydrogen 2.854 N/A LYS 200.A N GLN 196.A O no hydrogen 3.046 N/A GLY 201.A N ILE 197.A O no hydrogen 3.196 N/A ALA 202.A N LEU 198.A O no hydrogen 3.142 N/A ALA 203.A N GLU 199.A O no hydrogen 2.986 N/A LYS 204.A N LYS 200.A O no hydrogen 2.983 N/A LYS 204.A NZ ASP 154.A O no hydrogen 3.028 N/A LYS 204.A NZ ASN 157.A O no hydrogen 3.080 N/A LYS 204.A NZ SER 160.A O no hydrogen 3.030 N/A ARG 205.A N GLY 201.A O no hydrogen 2.869 N/A THR 206.A N ALA 202.A O no hydrogen 2.997 N/A THR 206.A OG1 ALA 202.A O no hydrogen 3.219 N/A THR 207.A N ALA 203.A O no hydrogen 3.316 N/A THR 207.A OG1 ALA 203.A O no hydrogen 3.342 N/A ALA 208.A N LYS 204.A O no hydrogen 3.246 N/A ALA 209.A N ARG 205.A O no hydrogen 2.754 N/A THR 210.A N THR 206.A O no hydrogen 3.072 N/A THR 210.A N THR 207.A O no hydrogen 3.107 N/A THR 210.A OG1 THR 206.A O no hydrogen 3.283 N/A LEU 211.A N THR 207.A O no hydrogen 3.223 N/A MET 212.A N ALA 208.A O no hydrogen 2.861 N/A TYR 215.A N MET 212.A O no hydrogen 3.298 N/A TYR 215.A OH GLU 146.A OE1 no hydrogen 2.842 N/A SER 217.A N ALA 214.A O no hydrogen 3.261 N/A ARG 218.A N ALA 214.A O no hydrogen 3.154 N/A ARG 218.A N TYR 215.A O no hydrogen 3.274 N/A SER 219.A N TYR 215.A O no hydrogen 3.001 N/A SER 219.A OG TYR 215.A O no hydrogen 2.675 N/A HIS 220.A N ILE 147.A O no hydrogen 2.939 N/A SER 221.A N ASP 249.A O no hydrogen 3.019 N/A VAL 222.A N LEU 145.A O no hydrogen 2.701 N/A PHE 223.A N LEU 247.A O no hydrogen 2.897 N/A SER 224.A N SER 143.A O no hydrogen 2.922 N/A VAL 225.A N LEU 245.A O no hydrogen 2.837 N/A THR 226.A N LYS 141.A O no hydrogen 2.889 N/A ILE 227.A N GLY 243.A O no hydrogen 2.688 N/A HIS 228.A N SER 139.A O no hydrogen 3.105 N/A MET 229.A N LYS 241.A O no hydrogen 2.644 N/A LYS 230.A N GLU 137.A O no hydrogen 2.574 N/A GLU 231.A N LEU 239.A O no hydrogen 2.793 N/A THR 233.A N GLU 237.A O no hydrogen 2.785 N/A THR 233.A OG1 GLU 237.A O no hydrogen 3.555 N/A ASP 235.A N THR 233.A OG1 no hydrogen 3.285 N/A GLY 236.A N THR 233.A O no hydrogen 2.844 N/A GLU 237.A N THR 233.A OG1 no hydrogen 3.128 N/A LEU 239.A N GLU 231.A O no hydrogen 2.750 N/A LYS 241.A N MET 229.A O no hydrogen 2.930 N/A LYS 241.A NZ ILE 78.A O no hydrogen 2.703 N/A GLY 243.A N ILE 227.A O no hydrogen 2.819 N/A LYS 244.A N ASN 82.A OD1 no hydrogen 3.307 N/A LEU 245.A N VAL 225.A O no hydrogen 2.707 N/A ASN 246.A N CYS 83.A O no hydrogen 2.756 N/A LEU 247.A N PHE 223.A O no hydrogen 2.785 N/A VAL 248.A N ILE 85.A O no hydrogen 2.768 N/A ASP 249.A N SER 221.A O no hydrogen 2.930 N/A LEU 250.A N ALA 87.A O no hydrogen 3.315 N/A ALA 251.A N HIS 220.A ND1 no hydrogen 3.239 N/A GLY 252.A N SER 217.A O no hydrogen 2.956 N/A SER 253.A N GLY 89.A O no hydrogen 3.154 N/A GLU 254.A N GLU 254.A OE1 no hydrogen 2.647 N/A ASN 255.A N GLU 314.A OE2 no hydrogen 2.788 N/A ASN 258.A ND2 HIS 220.A NE2 no hydrogen 2.868 N/A GLN 259.A NE2 GLU 282.A O no hydrogen 2.788 N/A SER 260.A OG GLU 150.A OE2 no hydrogen 2.425 N/A LEU 262.A N ASN 258.A O no hydrogen 2.844 N/A THR 263.A N GLN 259.A O no hydrogen 2.861 N/A THR 263.A OG1 GLN 259.A O no hydrogen 2.659 N/A THR 263.A OG1 GLU 282.A O no hydrogen 3.552 N/A LEU 264.A N SER 260.A O no hydrogen 2.864 N/A GLY 265.A N LEU 261.A O no hydrogen 3.263 N/A ARG 266.A N LEU 262.A O no hydrogen 3.157 N/A VAL 267.A N THR 263.A O no hydrogen 2.704 N/A ILE 268.A N LEU 264.A O no hydrogen 3.003 N/A THR 269.A N GLY 265.A O no hydrogen 2.963 N/A THR 269.A OG1 GLY 265.A O no hydrogen 3.012 N/A ALA 270.A N ARG 266.A O no hydrogen 2.970 N/A LEU 271.A N VAL 267.A O no hydrogen 2.979 N/A VAL 272.A N ILE 268.A O no hydrogen 2.843 N/A GLU 273.A N THR 269.A O no hydrogen 3.038 N/A ARG 274.A N LEU 271.A O no hydrogen 3.037 N/A THR 275.A N ALA 270.A O no hydrogen 3.155 N/A THR 275.A OG1 HIS 277.A O no hydrogen 3.419 N/A TYR 280.A N VAL 278.A O no hydrogen 2.882 N/A TYR 280.A OH LEU 293.A O no hydrogen 2.788 N/A GLU 282.A N PRO 279.A O no hydrogen 3.119 N/A SER 283.A OG THR 286.A OG1 no hydrogen 2.627 N/A LYS 284.A N GLU 150.A OE1 no hydrogen 2.976 N/A LEU 285.A N SER 260.A OG no hydrogen 3.141 N/A THR 286.A N SER 283.A OG no hydrogen 3.121 N/A THR 286.A OG1 TYR 280.A O no hydrogen 2.692 N/A THR 286.A OG1 SER 283.A O no hydrogen 3.229 N/A THR 286.A OG1 SER 283.A OG no hydrogen 2.627 N/A ARG 287.A N SER 283.A O no hydrogen 3.125 N/A ARG 287.A NH2 ASP 170.A OD1 no hydrogen 2.753 N/A ILE 288.A N LYS 284.A O no hydrogen 2.983 N/A LEU 289.A N LEU 285.A O no hydrogen 2.997 N/A SER 292.A N LEU 289.A O no hydrogen 2.733 N/A SER 292.A OG THR 84.A OG1 no hydrogen 2.585 N/A LEU 293.A N GLN 290.A O no hydrogen 3.140 N/A GLY 294.A N ASN 330.A OD1 no hydrogen 2.619 N/A ARG 296.A N ASP 291.A OD1 no hydrogen 2.656 N/A ARG 296.A NH1 GLU 333.A OE2 no hydrogen 3.557 N/A THR 297.A OG1 ASP 291.A O no hydrogen 3.468 N/A THR 297.A OG1 ASP 291.A OD2 no hydrogen 2.567 N/A ARG 298.A N ASN 82.A O no hydrogen 2.969 N/A ARG 298.A NE.B GLU 76.A OE2.B no hydrogen 3.061 N/A ARG 298.A NH1.A GLU 76.A OE1.A no hydrogen 3.129 N/A THR 299.A OG1 SER 292.A O no hydrogen 2.793 N/A SER 300.A N THR 84.A O no hydrogen 2.876 N/A ILE 301.A N GLN 4.A O no hydrogen 2.728 N/A ILE 302.A N PHE 86.A O no hydrogen 2.753 N/A ALA 303.A N VAL 6.A O no hydrogen 2.866 N/A THR 304.A N TYR 88.A O no hydrogen 2.721 N/A THR 304.A OG1 TYR 88.A O no hydrogen 3.434 N/A THR 304.A OG1 THR 93.A OG1 no hydrogen 2.662 N/A ILE 305.A N ARG 8.A O no hydrogen 2.899 N/A SER 306.A OG ASN 311.A OD1 no hydrogen 2.828 N/A ALA 308.A N SER 306.A OG no hydrogen 3.047 N/A ASN 311.A N ALA 308.A O no hydrogen 2.975 N/A LEU 312.A N SER 309.A O no hydrogen 3.136 N/A THR 315.A N ASN 311.A O no hydrogen 2.870 N/A THR 315.A OG1 ASN 311.A O no hydrogen 3.055 N/A LEU 316.A N LEU 312.A O no hydrogen 2.996 N/A SER 317.A N GLU 313.A O no hydrogen 2.917 N/A SER 317.A OG.B GLU 313.A O no hydrogen 2.796 N/A THR 318.A N GLU 314.A O no hydrogen 2.889 N/A THR 318.A OG1 GLU 314.A O no hydrogen 3.094 N/A LEU 319.A N THR 315.A O no hydrogen 2.978 N/A GLU 320.A N LEU 316.A O no hydrogen 2.855 N/A TYR 321.A N SER 317.A O no hydrogen 3.010 N/A ALA 322.A N THR 318.A O no hydrogen 2.668 N/A HIS 323.A N LEU 319.A O no hydrogen 2.717 N/A ARG 324.A N GLU 320.A O no hydrogen 3.061 N/A ARG 324.A NH1 THR 269.A OG1 no hydrogen 3.339 N/A ARG 324.A NH2 THR 269.A OG1 no hydrogen 2.851 N/A ALA 325.A N TYR 321.A O no hydrogen 3.240 N/A ALA 325.A N ALA 322.A O no hydrogen 2.991 N/A LYS 326.A N HIS 323.A O no hydrogen 3.175 N/A LYS 326.A NZ THR 51.A O no hydrogen 2.850 N/A ASN 327.A N ARG 324.A O no hydrogen 3.367 N/A ILE 328.A N ALA 325.A O no hydrogen 3.122 N/A ASN 330.A N LYS 1.A O no hydrogen 3.025 N/A ASN 330.A ND2 SER 292.A O no hydrogen 3.212 N/A ASN 330.A ND2 THR 297.A O no hydrogen 2.508 N/A LYS 331.A N GLY 295.A O no hydrogen 2.779 N/A ASN 335.A N GLY 80.A O no hydrogen 3.225 N/A ASN 335.A ND2 ASN 82.A OD1 no hydrogen 2.896 N/A ASN 335.A ND2 ILE 242.A O no hydrogen 2.812 N/A