Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 8rbz_k.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): ILE 3.A N LEU 407.A O no hydrogen 3.148 N/A VAL 5.A N VAL 405.A O no hydrogen 2.910 N/A THR 6.A N LEU 20.A O no hydrogen 3.232 N/A THR 6.A OG1 THR 404.A OG1 no hydrogen 3.041 N/A LEU 8.A N CYS 18.A O no hydrogen 2.815 N/A GLY 11.A N ASN 401.A OD1 no hydrogen 2.574 N/A VAL 14.A N ASP 13.A OD1 no hydrogen 2.721 N/A ARG 16.A N MET 34.A O no hydrogen 2.659 N/A ARG 16.A NH1 ARG 42.A O no hydrogen 2.784 N/A CYS 18.A SG ASP 31.A O no hydrogen 3.651 N/A VAL 21.A N VAL 28.A O no hydrogen 3.424 N/A SER 22.A N ARG 4.A O no hydrogen 3.104 N/A SER 22.A OG ASN 27.A OD1 no hydrogen 3.131 N/A LYS 26.A NZ ASP 145.A OD1 no hydrogen 2.405 N/A ASN 27.A ND2 PHE 59.A O no hydrogen 2.569 N/A VAL 28.A N VAL 21.A O no hydrogen 2.822 N/A MET 29.A N CYS 62.A O no hydrogen 2.893 N/A LEU 30.A N ILE 19.A O no hydrogen 3.268 N/A CYS 32.A N HIS 72.A O no hydrogen 3.452 N/A GLY 33.A N SER 17.A O no hydrogen 2.550 N/A TYR 49.A N ASP 46.A O no hydrogen 3.122 N/A THR 51.A OG1 ILE 50.A O no hydrogen 2.427 N/A LEU 56.A N GLY 84.A O no hydrogen 3.484 N/A THR 57.A OG1 ASP 86.A OD1 no hydrogen 2.666 N/A ASP 58.A N ARG 55.A O no hydrogen 3.288 N/A PHE 59.A N LEU 56.A O no hydrogen 3.011 N/A LEU 60.A N LEU 56.A O no hydrogen 2.745 N/A ILE 64.A N MET 29.A O no hydrogen 2.515 N/A SER 66.A OG HIS 67.A ND1 no hydrogen 2.728 N/A HIS 67.A ND1 SER 66.A OG no hydrogen 2.728 N/A HIS 72.A N HIS 69.A O no hydrogen 2.842 N/A HIS 72.A ND1 ASP 31.A OD2 no hydrogen 2.567 N/A CYS 73.A N HIS 69.A O no hydrogen 2.948 N/A CYS 73.A SG HIS 67.A O no hydrogen 3.884 N/A CYS 73.A SG PHE 68.A O no hydrogen 3.303 N/A CYS 73.A SG HIS 69.A O no hydrogen 3.603 N/A GLY 74.A N LEU 70.A O no hydrogen 2.726 N/A LEU 76.A N CYS 73.A O no hydrogen 3.473 N/A PHE 79.A N ALA 75.A O no hydrogen 3.319 N/A SER 80.A N LEU 76.A O no hydrogen 2.918 N/A GLU 81.A N PRO 77.A O no hydrogen 2.893 N/A VAL 83.A N TYR 78.A O no hydrogen 3.171 N/A TYR 85.A OH PRO 88.A O no hydrogen 2.982 N/A ASP 86.A N THR 57.A OG1 no hydrogen 3.059 N/A TYR 90.A N VAL 63.A O no hydrogen 2.705 N/A THR 92.A OG1 GLY 159.A O no hydrogen 2.642 N/A HIS 93.A N VAL 135.A O no hydrogen 3.343 N/A THR 95.A OG1 THR 92.A OG1 no hydrogen 2.356 N/A GLN 96.A N THR 92.A O no hydrogen 2.986 N/A GLN 96.A NE2 MET 129.A O no hydrogen 3.219 N/A GLN 96.A NE2 VAL 132.A O no hydrogen 3.303 N/A ALA 97.A N HIS 93.A O no hydrogen 2.956 N/A ILE 98.A N PRO 94.A O no hydrogen 2.919 N/A CYS 99.A N THR 95.A O no hydrogen 2.879 N/A LEU 103.A N CYS 99.A O no hydrogen 3.009 N/A GLU 104.A N PRO 100.A O no hydrogen 2.876 N/A ASP 105.A N ILE 101.A O no hydrogen 2.884 N/A TYR 106.A N LEU 102.A O no hydrogen 2.929 N/A ARG 107.A N LEU 103.A O no hydrogen 2.852 N/A ARG 107.A NE PHE 120.A O no hydrogen 2.934 N/A ARG 107.A NH2 PHE 120.A O no hydrogen 3.237 N/A LYS 108.A N GLU 104.A O no hydrogen 2.912 N/A ILE 109.A N ASP 105.A O no hydrogen 2.914 N/A ALA 110.A N TYR 106.A O no hydrogen 2.903 N/A VAL 111.A N ARG 107.A O no hydrogen 2.888 N/A ASP 112.A N LYS 108.A O no hydrogen 2.931 N/A LYS 113.A N ILE 109.A O no hydrogen 3.263 N/A LYS 113.A N ALA 110.A O no hydrogen 3.077 N/A LYS 114.A N VAL 111.A O no hydrogen 2.823 N/A GLY 115.A N ALA 110.A O no hydrogen 3.371 N/A SER 122.A OG GLU 104.A OE1 no hydrogen 2.869 N/A GLN 123.A N GLN 123.A OE1 no hydrogen 2.849 N/A MET 124.A N THR 121.A OG1 no hydrogen 3.251 N/A ILE 125.A N THR 121.A O no hydrogen 3.180 N/A LYS 126.A N SER 122.A O no hydrogen 2.978 N/A ASP 127.A N GLN 123.A O no hydrogen 2.907 N/A CYS 128.A N MET 124.A O no hydrogen 2.899 N/A CYS 128.A SG SER 80.A OG no hydrogen 3.259 N/A CYS 128.A SG MET 124.A O no hydrogen 3.324 N/A MET 129.A N ILE 125.A O no hydrogen 2.943 N/A LYS 130.A N LYS 126.A O no hydrogen 2.933 N/A LYS 131.A N ASP 127.A O no hydrogen 3.308 N/A LYS 131.A N CYS 128.A O no hydrogen 3.043 N/A LYS 131.A NZ ASP 86.A O no hydrogen 3.396 N/A LYS 131.A NZ GLY 87.A O no hydrogen 2.667 N/A LYS 131.A NZ LYS 131.A O no hydrogen 2.955 N/A VAL 132.A N MET 129.A O no hydrogen 2.991 N/A VAL 133.A N ILE 89.A O no hydrogen 3.024 N/A HIS 136.A N GLN 139.A OE1 no hydrogen 2.612 N/A HIS 138.A N ALA 151.A O no hydrogen 3.214 N/A GLN 139.A N HIS 136.A O no hydrogen 3.279 N/A VAL 141.A N GLN 139.A O no hydrogen 2.714 N/A ASP 144.A N LEU 147.A O no hydrogen 3.014 N/A ASP 145.A N ASP 144.A OD1 no hydrogen 2.609 N/A GLU 148.A N LYS 166.A O no hydrogen 3.382 N/A ILE 149.A N VAL 141.A O no hydrogen 2.894 N/A LYS 150.A N GLN 164.A O no hydrogen 3.088 N/A LYS 150.A NZ TYR 152.A OH no hydrogen 3.282 N/A TYR 152.A N MET 162.A O no hydrogen 2.435 N/A TYR 152.A OH GLN 164.A OE1 no hydrogen 3.417 N/A TYR 152.A OH ASP 192.A OD1 no hydrogen 3.056 N/A TYR 153.A OH TRP 278.A O no hydrogen 2.807 N/A ALA 160.A N VAL 157.A O no hydrogen 3.013 N/A ALA 161.A N SER 66.A O no hydrogen 3.465 N/A MET 162.A N TYR 152.A O no hydrogen 2.603 N/A PHE 163.A N TYR 174.A O no hydrogen 3.127 N/A GLN 164.A N LYS 150.A O no hydrogen 2.486 N/A ILE 165.A N VAL 172.A O no hydrogen 2.607 N/A VAL 167.A N GLU 170.A O no hydrogen 3.306 N/A SER 169.A OG SER 410.A O no hydrogen 3.564 N/A GLU 170.A N VAL 167.A O no hydrogen 2.907 N/A SER 171.A OG ASN 197.A OD1 no hydrogen 2.406 N/A VAL 172.A N ILE 165.A O no hydrogen 2.727 N/A VAL 173.A N LEU 198.A O no hydrogen 3.262 N/A TYR 174.A N PHE 163.A O no hydrogen 3.196 N/A TYR 174.A OH ASP 31.A OD2 no hydrogen 2.691 N/A THR 175.A N ILE 200.A O no hydrogen 3.226 N/A THR 175.A OG1 GLY 176.A O no hydrogen 3.366 N/A THR 175.A OG1 ILE 200.A O no hydrogen 3.230 N/A TYR 178.A OH THR 201.A OG1 no hydrogen 2.613 N/A ASN 179.A ND2 THR 181.A O no hydrogen 2.819 N/A ARG 184.A N ASP 183.A OD1 no hydrogen 2.431 N/A CYS 194.A N ASP 192.A O no hydrogen 2.793 N/A CYS 194.A SG GLN 164.A OE1 no hydrogen 3.231 N/A ASN 197.A N SER 171.A O no hydrogen 2.994 N/A ASN 197.A N SER 171.A OG no hydrogen 2.841 N/A LEU 198.A N SER 171.A O no hydrogen 3.379 N/A ILE 200.A N VAL 173.A O no hydrogen 2.802 N/A THR 201.A N LEU 372.A O no hydrogen 3.057 N/A THR 201.A OG1 TYR 178.A OH no hydrogen 2.613 N/A THR 201.A OG1 GLN 202.A O no hydrogen 3.537 N/A GLN 202.A NE2 HIS 72.A NE2 no hydrogen 3.207 N/A SER 203.A N VAL 374.A O no hydrogen 3.257 N/A SER 203.A OG VAL 374.A O no hydrogen 3.125 N/A ARG 210.A N SER 206.A O no hydrogen 2.850 N/A GLU 211.A N LYS 207.A O no hydrogen 2.908 N/A ARG 212.A N ARG 208.A O no hydrogen 2.872 N/A ASP 213.A N CYS 209.A O no hydrogen 2.931 N/A PHE 214.A N ARG 210.A O no hydrogen 2.908 N/A LEU 215.A N GLU 211.A O no hydrogen 2.897 N/A LYS 216.A N ARG 212.A O no hydrogen 2.884 N/A LYS 217.A N ASP 213.A O no hydrogen 2.920 N/A VAL 218.A N PHE 214.A O no hydrogen 2.951 N/A HIS 219.A N LEU 215.A O no hydrogen 2.853 N/A GLU 220.A N LYS 216.A O no hydrogen 2.879 N/A THR 221.A N LYS 217.A O no hydrogen 2.954 N/A THR 221.A OG1 LYS 217.A O no hydrogen 3.154 N/A THR 221.A OG1 VAL 218.A O no hydrogen 2.531 N/A VAL 222.A N VAL 218.A O no hydrogen 2.943 N/A GLU 223.A N HIS 219.A O no hydrogen 2.886 N/A ARG 224.A N GLU 220.A O no hydrogen 2.911 N/A GLY 225.A N VAL 222.A O no hydrogen 3.005 N/A GLY 226.A N THR 221.A O no hydrogen 2.752 N/A ILE 230.A N VAL 314.A O no hydrogen 2.971 N/A VAL 232.A N ALA 316.A O no hydrogen 3.190 N/A ALA 238.A N ALA 234.A O no hydrogen 3.232 N/A GLN 239.A N LEU 235.A O no hydrogen 2.911 N/A GLN 239.A NE2 ASN 269.A OD1 no hydrogen 2.705 N/A GLU 240.A N GLY 236.A O no hydrogen 2.935 N/A LEU 241.A N ARG 237.A O no hydrogen 2.904 N/A CYS 242.A N ALA 238.A O no hydrogen 2.873 N/A CYS 242.A SG ALA 238.A O no hydrogen 3.249 N/A ILE 243.A N GLN 239.A O no hydrogen 2.917 N/A LEU 244.A N GLU 240.A O no hydrogen 2.921 N/A LEU 245.A N LEU 241.A O no hydrogen 2.872 N/A GLU 246.A N CYS 242.A O no hydrogen 2.898 N/A THR 247.A N ILE 243.A O no hydrogen 2.947 N/A PHE 248.A N LEU 244.A O no hydrogen 2.919 N/A TRP 249.A N LEU 245.A O no hydrogen 2.892 N/A GLU 250.A N GLU 246.A O no hydrogen 2.930 N/A ARG 251.A N THR 247.A O no hydrogen 2.881 N/A MET 252.A N PHE 248.A O no hydrogen 2.908 N/A ASN 253.A N TRP 249.A O no hydrogen 2.860 N/A ASN 253.A N GLU 250.A O no hydrogen 3.241 N/A TYR 259.A N VAL 313.A O no hydrogen 2.857 N/A SER 261.A N PHE 315.A O no hydrogen 3.333 N/A SER 261.A OG PHE 315.A O no hydrogen 2.722 N/A THR 265.A N THR 262.A O no hydrogen 3.061 N/A LYS 267.A N GLY 263.A O no hydrogen 2.942 N/A ALA 268.A N LEU 264.A O no hydrogen 2.896 N/A ASN 269.A N THR 265.A O no hydrogen 2.853 N/A HIS 270.A N GLU 266.A O no hydrogen 2.928 N/A TYR 271.A N LYS 267.A O no hydrogen 2.963 N/A TYR 272.A N ALA 268.A O no hydrogen 2.854 N/A LYS 273.A N ASN 269.A O no hydrogen 2.913 N/A LEU 274.A N HIS 270.A O no hydrogen 2.969 N/A PHE 275.A N TYR 271.A O no hydrogen 2.978 N/A THR 279.A OG1 ILE 276.A O no hydrogen 2.627 N/A ASN 280.A N HIS 185.A O no hydrogen 3.126 N/A ASN 280.A ND2 ASP 183.A O no hydrogen 3.301 N/A GLN 281.A N ASN 280.A OD1 no hydrogen 2.456 N/A ARG 284.A N ASN 280.A O no hydrogen 3.296 N/A LYS 285.A N GLN 281.A O no hydrogen 2.908 N/A THR 286.A N LYS 282.A O no hydrogen 2.836 N/A THR 286.A OG1 LYS 282.A O no hydrogen 2.490 N/A THR 286.A OG1 ILE 283.A O no hydrogen 3.106 N/A PHE 287.A N ILE 283.A O no hydrogen 2.948 N/A VAL 288.A N LYS 285.A O no hydrogen 3.116 N/A ARG 290.A N THR 286.A O no hydrogen 3.025 N/A ALA 304.A N PHE 301.A O no hydrogen 3.401 N/A ALA 306.A N ASP 302.A O no hydrogen 3.321 N/A LEU 325.A N GLN 323.A O no hydrogen 2.803 N/A ILE 327.A N SER 324.A O no hydrogen 3.319 N/A LYS 330.A N GLN 326.A O no hydrogen 3.120 N/A TRP 331.A N ILE 327.A O no hydrogen 3.074 N/A MET 338.A N LYS 336.A O no hydrogen 2.766 N/A SER 351.A OG HIS 353.A O no hydrogen 2.641 N/A GLY 358.A N ASP 355.A OD1 no hydrogen 3.356 N/A MET 360.A N ALA 356.A O no hydrogen 2.915 N/A GLN 361.A N LYS 357.A O no hydrogen 2.900 N/A LEU 362.A N GLY 358.A O no hydrogen 2.936 N/A VAL 363.A N ILE 359.A O no hydrogen 2.939 N/A GLY 364.A N MET 360.A O no hydrogen 2.895 N/A GLN 365.A N GLN 361.A O no hydrogen 2.913 N/A ALA 366.A N LEU 362.A O no hydrogen 2.934 N/A GLU 367.A N VAL 363.A O no hydrogen 2.782 N/A GLU 369.A N GLU 369.A OE1 no hydrogen 2.678 N/A SER 370.A OG ASN 197.A O no hydrogen 2.425 N/A LEU 372.A N LEU 199.A O no hydrogen 2.451 N/A VAL 374.A N THR 201.A O no hydrogen 3.091 N/A HIS 375.A N ALA 10.A O no hydrogen 2.443 N/A HIS 375.A ND1 HIS 375.A O no hydrogen 2.687 N/A HIS 375.A NE2 ASP 71.A OD2 no hydrogen 2.497 N/A GLY 376.A N ASP 13.A O no hydrogen 2.942 N/A LYS 380.A NZ THR 204.A O no hydrogen 3.565 N/A LYS 380.A NZ GLU 377.A OE1 no hydrogen 2.947 N/A MET 381.A N GLU 377.A O no hydrogen 3.075 N/A GLU 382.A N ALA 378.A O no hydrogen 2.938 N/A PHE 383.A N LYS 379.A O no hydrogen 2.932 N/A LEU 384.A N LYS 380.A O no hydrogen 2.886 N/A LYS 385.A N MET 381.A O no hydrogen 2.864 N/A LYS 385.A NZ GLU 389.A OE2 no hydrogen 2.516 N/A GLN 386.A N GLU 382.A O no hydrogen 2.946 N/A GLN 386.A NE2 GLU 382.A O no hydrogen 3.101 N/A LYS 387.A N PHE 383.A O no hydrogen 2.903 N/A ILE 388.A N LEU 384.A O no hydrogen 2.892 N/A GLU 389.A N LYS 385.A O no hydrogen 2.937 N/A GLN 390.A N GLN 386.A O no hydrogen 2.904 N/A GLU 391.A N LYS 387.A O no hydrogen 2.905 N/A LEU 392.A N ILE 388.A O no hydrogen 2.926 N/A ARG 393.A N GLU 389.A O no hydrogen 3.360 N/A CYS 396.A SG TYR 397.A O no hydrogen 3.392 N/A ALA 400.A N GLU 403.A OE1 no hydrogen 2.716 N/A GLY 402.A N PRO 7.A O no hydrogen 2.787 N/A GLU 403.A N ALA 400.A O no hydrogen 3.023 N/A THR 404.A OG1 THR 6.A OG1 no hydrogen 3.041 N/A VAL 405.A N VAL 5.A O no hydrogen 2.593 N/A THR 406.A OG1 GLU 2.A OE2 no hydrogen 3.435 N/A THR 406.A OG1 ILE 3.A O no hydrogen 3.180 N/A LEU 407.A N ILE 3.A O no hydrogen 3.257 N/A THR 409.A OG1 GLU 170.A OE1 no hydrogen 2.301 N/A THR 409.A OG1 GLU 170.A OE2 no hydrogen 3.268 N/A SER 412.A N SER 169.A OG no hydrogen 3.392 N/A LEU 422.A N SER 418.A O no hydrogen 3.209 N/A LYS 423.A N LEU 419.A O no hydrogen 2.908 N/A ARG 424.A N GLY 420.A O no hydrogen 2.932 N/A GLU 425.A N LEU 421.A O no hydrogen 2.877 N/A MET 426.A N LEU 422.A O no hydrogen 2.894 N/A ALA 427.A N LYS 423.A O no hydrogen 2.947 N/A GLN 428.A N ARG 424.A O no hydrogen 2.909 N/A GLY 429.A N GLU 425.A O no hydrogen 2.889 N/A LEU 430.A N MET 426.A O no hydrogen 2.919 N/A LEU 431.A N ALA 427.A O no hydrogen 3.376 N/A THR 438.A OG1 VAL 449.A O no hydrogen 2.302 N/A ILE 440.A N ARG 447.A O no hydrogen 3.133 N/A LYS 442.A N ASN 445.A O no hydrogen 2.932 N/A GLU 443.A N GLU 443.A OE1 no hydrogen 2.740 N/A SER 444.A OG GLU 443.A O no hydrogen 2.522 N/A ASN 445.A N LYS 442.A O no hydrogen 3.473 N/A ASN 445.A ND2 GLU 443.A O no hydrogen 2.853 N/A ARG 447.A NE LEU 448.A O no hydrogen 3.060 N/A LEU 448.A N GLY 416.A O no hydrogen 3.083 N/A VAL 449.A N THR 438.A O no hydrogen 2.766 N/A ALA 454.A N SER 450.A O no hydrogen 2.657 N/A LEU 455.A N GLU 452.A O no hydrogen 3.356 N/A LYS 456.A N GLN 453.A O no hydrogen 3.160 N/A GLU 457.A N ALA 454.A O no hydrogen 3.194 N/A LEU 458.A N LEU 455.A O no hydrogen 3.403 N/A THR 466.A OG1 SER 529.A OG no hydrogen 3.299 N/A CYS 467.A SG ARG 468.A O no hydrogen 3.605 N/A THR 480.A OG1 LYS 476.A O no hydrogen 2.436 N/A ALA 481.A N GLU 477.A O no hydrogen 2.788 N/A LEU 482.A N GLN 478.A O no hydrogen 2.929 N/A ARG 483.A N GLU 479.A O no hydrogen 2.932 N/A ARG 483.A NE GLU 479.A O no hydrogen 3.546 N/A ARG 483.A NH2 THR 480.A OG1 no hydrogen 2.758 N/A VAL 484.A N THR 480.A O no hydrogen 2.872 N/A TYR 485.A N ALA 481.A O no hydrogen 2.904 N/A SER 486.A N LEU 482.A O no hydrogen 2.941 N/A SER 486.A OG LEU 482.A O no hydrogen 3.492 N/A SER 486.A OG ARG 483.A O no hydrogen 2.631 N/A HIS 487.A N ARG 483.A O no hydrogen 2.916 N/A LEU 488.A N VAL 484.A O no hydrogen 2.873 N/A LYS 489.A N TYR 485.A O no hydrogen 2.927 N/A SER 490.A N SER 486.A O no hydrogen 2.945 N/A VAL 491.A N HIS 487.A O no hydrogen 2.927 N/A LEU 492.A N LEU 488.A O no hydrogen 2.764 N/A HIS 495.A N LEU 492.A O no hydrogen 3.243 N/A CYS 496.A SG GLN 498.A O no hydrogen 3.275 N/A CYS 496.A SG GLN 498.A OE1 no hydrogen 3.661 N/A VAL 497.A N GLN 498.A OE1 no hydrogen 2.775 N/A HIS 499.A ND1 LEU 500.A O no hydrogen 2.920 N/A LEU 500.A N SER 504.A O no hydrogen 3.259 N/A SER 504.A OG LEU 512.A O no hydrogen 2.593 N/A THR 506.A OG1 VAL 510.A O no hydrogen 2.560 N/A SER 509.A OG SER 509.A O no hydrogen 2.570 N/A VAL 510.A N VAL 507.A O no hydrogen 3.189 N/A GLY 522.A N ASP 520.A OD1 no hydrogen 2.934 N/A THR 523.A OG1 ASP 520.A OD2 no hydrogen 3.049 N/A VAL 528.A N CYS 467.A O no hydrogen 3.152 N/A SER 529.A OG PHE 465.A O no hydrogen 2.439 N/A SER 529.A OG THR 466.A OG1 no hydrogen 3.299 N/A GLN 533.A NE2 THR 531.A OG1 no hydrogen 3.283 N/A GLU 535.A N THR 531.A O no hydrogen 2.434 N/A GLU 536.A N TYR 532.A O no hydrogen 2.970 N/A GLY 538.A N ASP 534.A O no hydrogen 2.877 N/A SER 539.A N GLU 535.A O no hydrogen 2.874 N/A SER 539.A OG GLU 535.A O no hydrogen 2.961 N/A SER 539.A OG GLU 536.A O no hydrogen 2.620 N/A PHE 540.A N GLU 536.A O no hydrogen 2.956 N/A LEU 541.A N LEU 537.A O no hydrogen 2.898 N/A THR 542.A N GLY 538.A O no hydrogen 2.890 N/A THR 542.A OG1 GLY 538.A O no hydrogen 2.895 N/A THR 542.A OG1 SER 539.A O no hydrogen 2.731 N/A SER 543.A N SER 539.A O no hydrogen 2.929 N/A SER 543.A OG SER 539.A O no hydrogen 2.980 N/A LEU 544.A N PHE 540.A O no hydrogen 2.913 N/A LEU 545.A N LEU 541.A O no hydrogen 2.900 N/A LYS 546.A N THR 542.A O no hydrogen 2.884 N/A LYS 547.A N SER 543.A O no hydrogen 2.915 N/A LYS 547.A N LEU 544.A O no hydrogen 3.245 N/A GLN 551.A N LEU 549.A O no hydrogen 2.687 N/A