Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 2xr7_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): ALA 1.A N GLU 102.A O no hydrogen 3.469 N/A VAL 3.A N PHE 100.A O no hydrogen 2.694 N/A ILE 4.A N PHE 100.A O no hydrogen 3.217 N/A GLN 6.A N VAL 98.A O no hydrogen 2.831 N/A SER 12.A N SER 63.A O no hydrogen 3.368 N/A SER 15.A N SER 12.A O no hydrogen 2.982 N/A SER 15.A OG SER 12.A O no hydrogen 2.647 N/A THR 17.A OG1 THR 92.A OG1 no hydrogen 2.884 N/A LEU 19.A N TYR 90.A O no hydrogen 3.299 N/A THR 20.A OG1 GLU 87.A OE1 no hydrogen 3.016 N/A LEU 21.A N LEU 88.A O no hydrogen 2.550 N/A LEU 23.A N PRO 86.A O no hydrogen 3.020 N/A THR 24.A N ASP 27.A OD2 no hydrogen 2.587 N/A THR 24.A OG1 ASP 27.A OD1 no hydrogen 3.023 N/A THR 24.A OG1 ASP 27.A OD2 no hydrogen 3.113 N/A ASP 27.A N THR 24.A O no hydrogen 2.974 N/A TRP 30.A N ASP 27.A O no hydrogen 3.158 N/A LEU 31.A N HIS 28.A O no hydrogen 3.074 N/A ALA 32.A N VAL 29.A O no hydrogen 3.166 N/A PHE 33.A N TRP 30.A O no hydrogen 3.129 N/A HIS 34.A ND1 ARG 35.A O no hydrogen 2.877 N/A ARG 36.A NH2 ASP 223.A OD2 no hydrogen 2.779 N/A ARG 37.A N PHE 158.A O no hydrogen 3.191 N/A ILE 38.A N GLU 394.A O no hydrogen 2.810 N/A LEU 39.A N ILE 156.A O no hydrogen 3.071 N/A PHE 40.A N LYS 392.A O no hydrogen 2.998 N/A TYR 41.A N ILE 154.A O no hydrogen 2.785 N/A TYR 41.A OH ALA 383.A O no hydrogen 2.607 N/A LEU 43.A N HIS 152.A O no hydrogen 2.580 N/A SER 46.A OG ASP 49.A OD1 no hydrogen 2.943 N/A ARG 47.A NH1 GLU 102.A OE1 no hydrogen 3.347 N/A PHE 50.A N ARG 47.A O no hydrogen 2.777 N/A VAL 51.A N ARG 47.A O no hydrogen 3.044 N/A GLN 52.A N PRO 48.A O no hydrogen 2.712 N/A THR 53.A N ASP 49.A O no hydrogen 3.160 N/A THR 53.A OG1 ASP 49.A O no hydrogen 3.326 N/A ILE 54.A N ASP 49.A O no hydrogen 3.502 N/A ILE 55.A N PHE 50.A O no hydrogen 3.064 N/A THR 57.A N THR 53.A O no hydrogen 2.934 N/A THR 57.A OG1 THR 53.A O no hydrogen 2.607 N/A THR 57.A OG1 ILE 54.A O no hydrogen 3.058 N/A LEU 58.A N ILE 54.A O no hydrogen 2.763 N/A LYS 59.A N ILE 55.A O no hydrogen 2.766 N/A ASP 60.A N PRO 56.A O no hydrogen 2.827 N/A SER 61.A N THR 57.A O no hydrogen 3.042 N/A SER 61.A OG THR 57.A O no hydrogen 2.809 N/A SER 61.A OG LEU 58.A O no hydrogen 2.746 N/A LEU 62.A N LEU 58.A O no hydrogen 2.820 N/A SER 63.A N LYS 59.A O no hydrogen 3.417 N/A SER 63.A OG ASP 60.A O no hydrogen 3.556 N/A LEU 64.A N ASP 60.A O no hydrogen 3.167 N/A THR 65.A N SER 61.A O no hydrogen 3.114 N/A THR 65.A OG1 SER 61.A O no hydrogen 2.460 N/A LEU 66.A N LEU 62.A O no hydrogen 2.901 N/A LYS 67.A N SER 63.A O no hydrogen 3.049 N/A TYR 68.A N THR 65.A O no hydrogen 2.726 N/A TYR 68.A OH GLU 187.A OE1 no hydrogen 2.778 N/A TYR 69.A N THR 65.A O no hydrogen 3.114 N/A TYR 69.A OH PHE 194.A O no hydrogen 2.489 N/A LEU 72.A N TYR 69.A O no hydrogen 3.186 N/A ALA 73.A N LEU 70.A O no hydrogen 2.889 N/A GLY 74.A N PRO 71.A O no hydrogen 2.622 N/A ALA 77.A N GLU 87.A O no hydrogen 2.573 N/A CYS 78.A N GLN 137.A O no hydrogen 2.996 N/A SER 83.A N ASP 81.A O no hydrogen 2.682 N/A SER 83.A OG ASP 81.A O no hydrogen 3.480 N/A SER 83.A OG ASP 81.A OD1 no hydrogen 3.245 N/A GLU 87.A N ALA 77.A O no hydrogen 3.349 N/A LEU 88.A N LEU 21.A O no hydrogen 2.456 N/A ARG 89.A NE GLU 87.A OE1 no hydrogen 3.143 N/A TYR 90.A N LEU 19.A O no hydrogen 2.696 N/A VAL 91.A N ASN 94.A OD1 no hydrogen 3.203 N/A THR 92.A OG1 THR 17.A OG1 no hydrogen 2.884 N/A ASN 94.A N VAL 91.A O no hydrogen 3.118 N/A VAL 98.A N GLN 6.A O no hydrogen 3.198 N/A ILE 99.A N ILE 144.A O no hydrogen 2.926 N/A PHE 100.A N ILE 4.A O no hydrogen 2.982 N/A SER 101.A N VAL 146.A O no hydrogen 2.992 N/A SER 101.A OG THR 147.A OG1 no hydrogen 3.396 N/A GLU 102.A N ALA 1.A O no hydrogen 2.935 N/A SER 103.A N LEU 148.A O no hydrogen 2.990 N/A TYR 108.A N ASP 105.A OD1 no hydrogen 2.766 N/A LEU 109.A N ASP 105.A O no hydrogen 3.186 N/A ILE 110.A N PHE 106.A O no hydrogen 3.174 N/A GLY 111.A N TYR 108.A O no hydrogen 2.931 N/A TYR 112.A OH GLU 418.A OE2 no hydrogen 2.901 N/A ARG 115.A N VAL 231.A O no hydrogen 2.852 N/A ARG 115.A N ARG 232.A O no hydrogen 2.955 N/A ARG 115.A NE HIS 113.A O no hydrogen 2.841 N/A ARG 115.A NH1 LEU 109.A O no hydrogen 3.041 N/A ARG 115.A NH1 GLU 394.A OE2 no hydrogen 2.478 N/A ARG 115.A NH2 GLU 394.A OE2 no hydrogen 2.983 N/A ASN 116.A N TYR 108.A OH no hydrogen 3.212 N/A THR 117.A N LYS 230.A O no hydrogen 3.338 N/A LYS 118.A N ASN 116.A OD1 no hydrogen 2.933 N/A ASP 119.A N ASN 116.A O no hydrogen 3.081 N/A TYR 121.A OH ASP 399.A OD2 no hydrogen 2.935 N/A PHE 123.A N PHE 120.A O no hydrogen 3.317 N/A GLN 126.A NE2 ASP 223.A O no hydrogen 3.007 N/A LYS 131.A N LEU 138.A O no hydrogen 3.187 N/A ALA 133.A N VAL 136.A O no hydrogen 3.201 N/A VAL 136.A N ALA 133.A O no hydrogen 3.338 N/A GLN 137.A N CYS 78.A O no hydrogen 3.156 N/A LEU 138.A N LYS 131.A O no hydrogen 3.083 N/A ALA 139.A N ASN 75.A O no hydrogen 2.673 N/A ALA 143.A N THR 159.A O no hydrogen 2.954 N/A ILE 144.A N SER 97.A O no hydrogen 3.017 N/A GLN 145.A N GLY 157.A O no hydrogen 3.133 N/A GLN 145.A NE2 HIS 122.A O no hydrogen 2.696 N/A GLN 145.A NE2 THR 147.A OG1 no hydrogen 3.065 N/A VAL 146.A N ILE 99.A O no hydrogen 2.720 N/A THR 147.A N SER 155.A O no hydrogen 2.896 N/A THR 147.A OG1 SER 101.A OG no hydrogen 3.396 N/A LEU 148.A N SER 101.A O no hydrogen 2.916 N/A PHE 149.A N GLY 153.A O no hydrogen 2.736 N/A ASN 151.A N ILE 45.A O no hydrogen 2.641 N/A HIS 152.A N PHE 149.A O no hydrogen 2.675 N/A GLY 153.A N PHE 149.A O no hydrogen 3.283 N/A ILE 154.A N TYR 41.A O no hydrogen 3.024 N/A SER 155.A N THR 147.A O no hydrogen 2.728 N/A ILE 156.A N LEU 39.A O no hydrogen 2.775 N/A GLY 157.A N GLN 145.A O no hydrogen 2.611 N/A PHE 158.A N ARG 37.A O no hydrogen 2.889 N/A THR 159.A N ALA 143.A O no hydrogen 2.919 N/A THR 159.A OG1 PRO 125.A O no hydrogen 2.915 N/A HIS 161.A N VAL 141.A O no hydrogen 3.018 N/A VAL 163.A N HIS 161.A ND1 no hydrogen 3.149 N/A ALA 164.A N HIS 161.A O no hydrogen 3.055 N/A GLY 165.A N HIS 161.A O no hydrogen 3.290 N/A THR 169.A OG1 PHE 310.A O no hydrogen 2.658 N/A THR 169.A OG1 GLY 311.A O no hydrogen 3.267 N/A VAL 171.A N GLY 167.A O no hydrogen 2.883 N/A LYS 172.A N ALA 168.A O no hydrogen 3.075 N/A LYS 172.A NZ GLU 193.A O no hydrogen 3.367 N/A LYS 172.A NZ PRO 307.A O no hydrogen 2.874 N/A PHE 173.A N THR 169.A O no hydrogen 3.178 N/A VAL 174.A N ILE 170.A O no hydrogen 2.979 N/A ARG 175.A N VAL 171.A O no hydrogen 2.889 N/A ALA 176.A N LYS 172.A O no hydrogen 2.831 N/A TRP 177.A N PHE 173.A O no hydrogen 2.899 N/A TRP 177.A NE1 SER 61.A OG no hydrogen 2.981 N/A ALA 178.A N VAL 174.A O no hydrogen 2.841 N/A LEU 179.A N ARG 175.A O no hydrogen 2.867 N/A LEU 180.A N ALA 176.A O no hydrogen 2.928 N/A ASN 181.A N TRP 177.A O no hydrogen 2.946 N/A ASN 181.A ND2 SER 61.A OG no hydrogen 3.136 N/A LYS 182.A N ALA 178.A O no hydrogen 2.741 N/A LYS 182.A NZ ASP 384.A OD2 no hydrogen 3.435 N/A PHE 183.A N LEU 179.A O no hydrogen 3.021 N/A GLY 184.A N ASN 181.A O no hydrogen 2.906 N/A GLY 185.A N LEU 180.A O no hydrogen 2.499 N/A ASP 186.A N PHE 183.A O no hydrogen 3.143 N/A GLN 188.A N ASP 186.A OD1 no hydrogen 3.253 N/A PHE 189.A N ASP 186.A O no hydrogen 3.033 N/A LEU 190.A N GLU 187.A O no hydrogen 2.933 N/A PHE 194.A N ALA 191.A O no hydrogen 2.757 N/A ILE 195.A N ASN 192.A O no hydrogen 3.059 N/A PHE 197.A N SER 308.A O no hydrogen 2.755 N/A TYR 198.A OH TYR 68.A O no hydrogen 2.588 N/A SER 201.A OG ARG 200.A O no hydrogen 2.559 N/A VAL 202.A N ARG 200.A O no hydrogen 2.419 N/A ASN 207.A ND2 LEU 353.A O no hydrogen 3.686 N/A VAL 209.A N ASP 205.A OD1 no hydrogen 3.122 N/A VAL 209.A N ASP 205.A OD2 no hydrogen 3.419 N/A GLY 210.A N ASP 205.A OD1 no hydrogen 3.004 N/A ILE 212.A N VAL 209.A O no hydrogen 2.697 N/A LYS 219.A NZ PRO 79.A O no hydrogen 2.886 N/A LYS 221.A NZ HIS 220.A O no hydrogen 3.303 N/A SER 222.A OG GLU 129.A OE1 no hydrogen 3.037 N/A LYS 230.A NZ ASP 399.A O no hydrogen 2.915 N/A ARG 232.A NH1 GLU 394.A OE1 no hydrogen 2.758 N/A ARG 232.A NH1 PHE 395.A O no hydrogen 3.409 N/A ARG 232.A NH2 PHE 395.A O no hydrogen 3.047 N/A GLY 233.A N LEU 421.A O no hydrogen 3.142 N/A THR 234.A N TYR 112.A O no hydrogen 3.265 N/A PHE 235.A N ILE 419.A O no hydrogen 2.608 N/A ILE 237.A N LEU 417.A O no hydrogen 3.010 N/A THR 238.A OG1 ASP 416.A OD2 no hydrogen 2.865 N/A ARG 239.A N ASP 416.A OD1 no hydrogen 2.851 N/A ILE 242.A N THR 238.A O no hydrogen 2.829 N/A GLY 243.A N ARG 239.A O no hydrogen 3.117 N/A LYS 244.A N HIS 240.A O no hydrogen 2.892 N/A LEU 245.A N ASP 241.A O no hydrogen 3.032 N/A LYS 246.A N ILE 242.A O no hydrogen 2.895 N/A LYS 246.A NZ SER 261.A OG no hydrogen 3.329 N/A ASN 247.A N GLY 243.A O no hydrogen 2.820 N/A LEU 248.A N LYS 244.A O no hydrogen 2.908 N/A VAL 249.A N LEU 245.A O no hydrogen 2.975 N/A LEU 250.A N LYS 246.A O no hydrogen 3.027 N/A THR 251.A N ASN 247.A O no hydrogen 3.235 N/A THR 251.A OG1 ASN 247.A O no hydrogen 2.603 N/A THR 251.A OG1 LEU 248.A O no hydrogen 3.450 N/A ARG 252.A N LEU 248.A O no hydrogen 3.224 N/A ARG 253.A N VAL 249.A O no hydrogen 2.818 N/A ARG 253.A NH1 GLU 337.A OE1 no hydrogen 3.113 N/A VAL 259.A N THR 257.A O no hydrogen 3.208 N/A THR 263.A OG1 THR 260.A O no hydrogen 3.297 N/A VAL 264.A N THR 260.A O no hydrogen 2.959 N/A THR 265.A N SER 261.A O no hydrogen 2.796 N/A THR 265.A OG1 SER 261.A O no hydrogen 2.789 N/A CYS 266.A N PHE 262.A O no hydrogen 2.902 N/A CYS 266.A SG PHE 262.A O no hydrogen 3.305 N/A ALA 267.A N THR 263.A O no hydrogen 3.224 N/A TYR 268.A N VAL 264.A O no hydrogen 2.645 N/A TYR 268.A OH PHE 433.A O no hydrogen 2.698 N/A VAL 269.A N THR 265.A O no hydrogen 2.938 N/A TRP 270.A N CYS 266.A O no hydrogen 2.689 N/A THR 271.A N ALA 267.A O no hydrogen 3.191 N/A THR 271.A OG1 TYR 268.A O no hydrogen 2.827 N/A CYS 272.A N TYR 268.A O no hydrogen 3.046 N/A CYS 272.A SG TYR 268.A O no hydrogen 3.350 N/A ILE 273.A N VAL 269.A O no hydrogen 2.807 N/A ILE 274.A N TRP 270.A O no hydrogen 3.071 N/A LYS 275.A N THR 271.A O no hydrogen 2.831 N/A SER 276.A N CYS 272.A O no hydrogen 2.649 N/A SER 276.A OG CYS 272.A O no hydrogen 2.746 N/A SER 276.A OG ILE 273.A O no hydrogen 2.993 N/A GLU 277.A N ILE 273.A O no hydrogen 3.198 N/A THR 280.A OG1 GLU 277.A O no hydrogen 3.103 N/A THR 280.A OG1 THR 280.A O no hydrogen 2.384 N/A ASN 287.A N ASP 285.A OD1 no hydrogen 3.127 N/A GLY 288.A N ASP 285.A O no hydrogen 3.165 N/A PHE 290.A N ARG 368.A O no hydrogen 3.092 N/A PHE 291.A N ALA 319.A O no hydrogen 2.923 N/A GLY 292.A N LEU 370.A O no hydrogen 2.844 N/A CYS 293.A N TYR 317.A O no hydrogen 2.989 N/A CYS 293.A SG TYR 317.A O no hydrogen 4.035 N/A ALA 295.A N VAL 315.A O no hydrogen 2.554 N/A CYS 297.A N ALA 313.A O no hydrogen 2.680 N/A ARG 298.A N ASP 296.A OD2 no hydrogen 3.302 N/A ARG 298.A NH1 ASP 166.A OD2 no hydrogen 2.472 N/A ARG 298.A NH1 ASP 296.A OD1 no hydrogen 3.425 N/A ARG 298.A NH1 ASP 296.A OD2 no hydrogen 3.491 N/A ARG 298.A NH2 TYR 309.A O no hydrogen 2.704 N/A ARG 298.A NH2 GLY 311.A O no hydrogen 3.490 N/A ASN 302.A N GLU 349.A OE2 no hydrogen 3.206 N/A TYR 309.A N PRO 306.A O no hydrogen 2.875 N/A ASN 312.A N ASP 27.A OD1 no hydrogen 3.378 N/A ASN 312.A ND2 HIS 162.A O no hydrogen 2.942 N/A ALA 313.A N ASP 166.A OD1 no hydrogen 2.824 N/A TYR 317.A N CYS 293.A O no hydrogen 2.740 N/A TYR 317.A OH ARG 346.A O no hydrogen 2.865 N/A ALA 319.A N PHE 291.A O no hydrogen 2.637 N/A THR 321.A N GLU 289.A O no hydrogen 2.965 N/A THR 321.A OG1 ARG 322.A O no hydrogen 3.489 N/A THR 321.A OG1 ASP 325.A OD1 no hydrogen 2.844 N/A ARG 322.A NE ASP 325.A OD2 no hydrogen 2.735 N/A ARG 322.A NH2 ASP 325.A OD2 no hydrogen 2.898 N/A GLN 323.A N GLY 288.A O no hydrogen 3.052 N/A VAL 324.A N GLU 286.A O no hydrogen 2.787 N/A ALA 327.A N GLN 323.A O no hydrogen 3.030 N/A ALA 327.A N VAL 324.A O no hydrogen 3.306 N/A GLY 328.A N ASP 325.A O no hydrogen 3.220 N/A GLU 330.A N GLY 328.A O no hydrogen 2.417 N/A THR 333.A OG1 GLU 330.A OE2 no hydrogen 2.889 N/A ILE 334.A N GLU 330.A O no hydrogen 2.947 N/A ALA 335.A N GLY 331.A O no hydrogen 2.758 N/A VAL 336.A N PHE 332.A O no hydrogen 3.008 N/A GLU 337.A N THR 333.A O no hydrogen 3.123 N/A LEU 338.A N ILE 334.A O no hydrogen 2.940 N/A ILE 339.A N ALA 335.A O no hydrogen 3.007 N/A GLY 340.A N VAL 336.A O no hydrogen 2.936 N/A GLU 341.A N GLU 337.A O no hydrogen 3.050 N/A ALA 342.A N LEU 338.A O no hydrogen 2.901 N/A ILE 343.A N ILE 339.A O no hydrogen 3.401 N/A ARG 344.A N GLY 340.A O no hydrogen 2.847 N/A ARG 344.A NH1 ARG 344.A O no hydrogen 2.887 N/A TRP 351.A N ASP 348.A OD1 no hydrogen 3.371 N/A ILE 352.A N GLU 349.A O no hydrogen 2.865 N/A LEU 353.A N GLU 349.A O no hydrogen 3.054 N/A SER 356.A OG ILE 352.A O no hydrogen 3.009 N/A SER 356.A OG SER 354.A O no hydrogen 3.215 N/A LYS 359.A N SER 356.A O no hydrogen 2.483 N/A LYS 367.A N ASP 365.A OD1 no hydrogen 3.359 N/A ARG 368.A N ASP 365.A O no hydrogen 2.644 N/A ARG 368.A NH1 GLU 277.A OE2 no hydrogen 3.432 N/A ARG 368.A NH2 GLU 277.A OE1 no hydrogen 2.997 N/A SER 369.A OG ASP 365.A O no hydrogen 3.135 N/A SER 369.A OG ALA 366.A O no hydrogen 2.811 N/A LEU 370.A N PHE 290.A O no hydrogen 2.960 N/A SER 371.A N ILE 404.A O no hydrogen 3.075 N/A SER 371.A OG ASP 401.A OD2 no hydrogen 3.214 N/A VAL 372.A N GLY 292.A O no hydrogen 3.210 N/A LYS 377.A N SER 375.A OG no hydrogen 3.158 N/A ASP 379.A N ASP 379.A OD1 no hydrogen 2.456 N/A TYR 381.A OH GLU 418.A OE1 no hydrogen 2.710 N/A ALA 382.A N ASP 379.A O no hydrogen 3.406 N/A ASP 384.A N ALA 382.A O no hydrogen 2.748 N/A GLY 386.A N ASP 384.A OD1 no hydrogen 2.694 N/A GLY 388.A N ASP 384.A OD1 no hydrogen 2.957 N/A GLU 391.A N PHE 40.A O no hydrogen 2.731 N/A LYS 392.A NZ THR 234.A OG1 no hydrogen 2.880 N/A LYS 392.A NZ LEU 393.A O no hydrogen 2.981 N/A LYS 392.A NZ GLU 394.A OE2 no hydrogen 3.312 N/A GLU 394.A N ILE 38.A O no hydrogen 3.044 N/A VAL 396.A N ARG 36.A O no hydrogen 2.644 N/A SER 397.A N ARG 36.A O no hydrogen 3.339 N/A ILE 398.A N PHE 395.A O no hydrogen 3.434 N/A ASP 399.A N VAL 396.A O no hydrogen 3.457 N/A GLY 403.A N ASP 401.A OD1 no hydrogen 2.778 N/A SER 405.A OG SER 371.A O no hydrogen 2.874 N/A SER 406.A N GLY 420.A O no hydrogen 2.759 N/A SER 408.A N GLU 418.A O no hydrogen 3.104 N/A SER 408.A OG LYS 409.A O no hydrogen 2.995 N/A LYS 409.A NZ ASP 414.A O no hydrogen 2.811 N/A LYS 409.A NZ ASP 414.A OD1 no hydrogen 3.436 N/A SER 410.A N ASP 416.A O no hydrogen 3.139 N/A LYS 411.A NZ GLU 391.A OE1 no hydrogen 3.552 N/A LYS 411.A NZ GLU 391.A OE2 no hydrogen 3.359 N/A ASP 412.A N SER 410.A OG no hydrogen 2.658 N/A ASP 416.A N SER 413.A O no hydrogen 2.997 N/A LEU 417.A N ILE 237.A O no hydrogen 2.749 N/A GLU 418.A N SER 408.A O no hydrogen 2.904 N/A ILE 419.A N PHE 235.A O no hydrogen 2.680 N/A GLY 420.A N SER 406.A O no hydrogen 2.785 N/A LEU 421.A N GLY 233.A O no hydrogen 3.335 N/A SER 422.A OG ASP 399.A OD1 no hydrogen 3.114 N/A LYS 425.A NZ ASN 428.A OD1 no hydrogen 3.323 N/A ARG 427.A NH1 SER 276.A OG no hydrogen 3.322 N/A ALA 429.A N THR 426.A O no hydrogen 2.972 N/A PHE 430.A N ARG 427.A O no hydrogen 2.708 N/A ALA 432.A N ASN 428.A O no hydrogen 3.217 N/A ALA 432.A N ALA 429.A O no hydrogen 3.283 N/A THR 434.A N ALA 431.A O no hydrogen 3.281 N/A ILE 437.A N PHE 433.A O no hydrogen 3.441 N/A SER 438.A N HIS 435.A O no hydrogen 3.175 N/A SER 438.A OG HIS 435.A O no hydrogen 2.857 N/A PHE 439.A N GLY 436.A O no hydrogen 3.201 N/A LEU 440.A N ILE 437.A O no hydrogen 2.913 N/A