Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 2bo9_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): SER 1.A N ASN 22.A OD1 no hydrogen 2.879 N/A SER 1.A N ASP 26.A OD1 no hydrogen 3.237 N/A SER 1.A N ASP 26.A OD2 no hydrogen 2.800 N/A ASN 4.A N SER 2.A OG no hydrogen 3.133 N/A TYR 7.A OH GLU 19.A OE2 no hydrogen 2.546 N/A GLY 8.A N ASN 6.A OD1 no hydrogen 2.818 N/A ALA 9.A N ASN 6.A O no hydrogen 3.164 N/A TYR 10.A OH LEU 280.A O no hydrogen 2.665 N/A HIS 11.A NE2 ASN 6.A O no hydrogen 2.744 N/A ALA 15.A N SER 12.A OG no hydrogen 2.954 N/A ILE 16.A N SER 12.A O no hydrogen 2.966 N/A TYR 17.A N LEU 13.A O no hydrogen 2.903 N/A TYR 17.A OH PRO 44.A O no hydrogen 2.673 N/A HIS 18.A N GLU 14.A O no hydrogen 2.901 N/A GLU 19.A N ALA 15.A O no hydrogen 2.899 N/A MET 20.A N ILE 16.A O no hydrogen 2.880 N/A ASP 21.A N TYR 17.A O no hydrogen 3.051 N/A ASN 22.A N HIS 18.A O no hydrogen 2.867 N/A ASN 22.A ND2 GLU 19.A OE1 no hydrogen 2.975 N/A ILE 23.A N GLU 19.A O no hydrogen 2.884 N/A ALA 24.A N MET 20.A O no hydrogen 3.048 N/A ALA 25.A N ASP 21.A O no hydrogen 2.821 N/A ASP 26.A N ASN 22.A O no hydrogen 3.136 N/A PHE 27.A N ILE 23.A O no hydrogen 3.100 N/A LEU 30.A N PHE 27.A O no hydrogen 2.957 N/A ALA 31.A N PHE 27.A O no hydrogen 2.848 N/A ARG 32.A N LYS 49.A O no hydrogen 2.948 N/A ARG 33.A NH1 TYR 17.A O no hydrogen 2.929 N/A VAL 34.A N VAL 47.A O no hydrogen 2.839 N/A ILE 36.A N MET 45.A O no hydrogen 2.879 N/A SER 39.A N ARG 43.A O no hydrogen 2.768 N/A SER 39.A OG ARG 43.A O no hydrogen 3.480 N/A SER 39.A OG ASP 113.A OD1 no hydrogen 2.597 N/A SER 39.A OG ASP 113.A OD2 no hydrogen 3.184 N/A PHE 40.A N GLU 174.A OE2 no hydrogen 2.968 N/A GLU 41.A N ASP 113.A OD2 no hydrogen 2.900 N/A ASN 42.A N SER 39.A O no hydrogen 2.907 N/A ARG 43.A N SER 39.A OG no hydrogen 2.946 N/A ARG 43.A NH1 GLU 41.A OE1 no hydrogen 2.689 N/A ARG 43.A NH1 ASP 113.A OD1 no hydrogen 2.840 N/A MET 45.A N GLY 37.A O no hydrogen 2.834 N/A VAL 47.A N VAL 34.A O no hydrogen 2.894 N/A LEU 48.A N LEU 106.A O no hydrogen 2.870 N/A LYS 49.A N ARG 32.A O no hydrogen 2.845 N/A PHE 50.A N ILE 104.A O no hydrogen 2.786 N/A SER 51.A N LEU 30.A O no hydrogen 2.832 N/A SER 51.A OG ASP 103.A OD1 no hydrogen 2.609 N/A SER 51.A OG ASP 103.A OD2 no hydrogen 3.483 N/A THR 52.A OG1 LEU 99.A O no hydrogen 2.760 N/A GLY 53.A N SER 51.A OG no hydrogen 2.918 N/A VAL 56.A N GLY 53.A O no hydrogen 3.168 N/A ARG 57.A NH1 HIS 185.A O no hydrogen 3.007 N/A ARG 58.A NH2 THR 52.A OG1 no hydrogen 3.273 N/A ALA 60.A N ASN 187.A O no hydrogen 3.124 N/A VAL 61.A N ASP 103.A O no hydrogen 2.925 N/A TRP 62.A N GLY 190.A O no hydrogen 2.964 N/A TRP 62.A NE1 ASN 64.A OD1 no hydrogen 2.914 N/A LEU 63.A N PHE 105.A O no hydrogen 2.773 N/A ASN 64.A N ILE 192.A O no hydrogen 2.822 N/A ASN 64.A ND2 ASP 193.A OD1 no hydrogen 2.912 N/A ALA 65.A N LEU 107.A O no hydrogen 2.926 N/A GLY 66.A N SER 74.A OG no hydrogen 3.172 N/A HIS 68.A ND1 HIS 195.A ND1 no hydrogen 3.135 N/A HIS 68.A NE2 ASP 141.A OD1 no hydrogen 2.757 N/A SER 69.A N ARG 126.A O no hydrogen 3.456 N/A SER 69.A OG TRP 125.A O no hydrogen 2.850 N/A ARG 70.A NH1 LEU 124.A O no hydrogen 2.848 N/A GLU 71.A N HIS 68.A O no hydrogen 3.093 N/A TRP 72.A NE1 THR 118.A OG1 no hydrogen 2.934 N/A SER 74.A N GLU 71.A O no hydrogen 2.828 N/A SER 74.A OG GLU 71.A O no hydrogen 2.720 N/A GLN 75.A NE2 GLU 71.A O no hydrogen 2.853 N/A ALA 76.A N TRP 72.A O no hydrogen 3.084 N/A THR 77.A N ILE 73.A O no hydrogen 2.877 N/A THR 77.A OG1 ILE 73.A O no hydrogen 2.792 N/A ALA 78.A N SER 74.A O no hydrogen 2.881 N/A ILE 79.A N GLN 75.A O no hydrogen 2.992 N/A TRP 80.A N ALA 76.A O no hydrogen 3.171 N/A THR 81.A N THR 77.A O no hydrogen 2.864 N/A THR 81.A OG1 THR 77.A O no hydrogen 2.794 N/A ALA 82.A N ALA 78.A O no hydrogen 3.077 N/A ARG 83.A N ILE 79.A O no hydrogen 3.221 N/A ARG 83.A NE TYR 7.A OH no hydrogen 2.968 N/A ARG 83.A NH2 GLU 19.A OE2 no hydrogen 3.021 N/A LYS 84.A N TRP 80.A O no hydrogen 2.809 N/A LYS 84.A NZ ASP 88.A OD2 no hydrogen 2.978 N/A ILE 85.A N THR 81.A O no hydrogen 2.942 N/A VAL 86.A N ALA 82.A O no hydrogen 3.295 N/A SER 87.A N ARG 83.A O no hydrogen 2.987 N/A SER 87.A OG ARG 83.A O no hydrogen 2.751 N/A ASP 88.A N LYS 84.A O no hydrogen 2.939 N/A ASP 88.A N ILE 85.A O no hydrogen 3.296 N/A TYR 89.A N ILE 85.A O no hydrogen 2.985 N/A GLN 90.A N THR 96.A OG1 no hydrogen 2.803 N/A ARG 91.A N ASP 88.A O no hydrogen 2.848 N/A ARG 91.A NH1 SER 87.A O no hydrogen 3.002 N/A ASP 92.A N ASP 88.A O no hydrogen 2.832 N/A ALA 94.A N ASP 92.A OD1 no hydrogen 3.040 N/A ILE 95.A N ASP 92.A OD2 no hydrogen 3.103 N/A THR 96.A N ASP 92.A O no hydrogen 3.124 N/A THR 96.A OG1 ASP 92.A O no hydrogen 2.655 N/A SER 97.A N PRO 93.A O no hydrogen 2.873 N/A SER 97.A OG.B PRO 93.A O no hydrogen 3.285 N/A SER 97.A OG.B ALA 94.A O no hydrogen 2.823 N/A ILE 98.A N ALA 94.A O no hydrogen 3.017 N/A LEU 99.A N ILE 95.A O no hydrogen 2.959 N/A GLU 100.A N THR 96.A O no hydrogen 2.981 N/A LYS 101.A N ILE 98.A O no hydrogen 3.124 N/A MET 102.A N ILE 98.A O no hydrogen 2.921 N/A ASP 103.A N PRO 59.A O no hydrogen 2.929 N/A ILE 104.A N PHE 50.A O no hydrogen 2.988 N/A PHE 105.A N VAL 61.A O no hydrogen 2.870 N/A LEU 106.A N LEU 48.A O no hydrogen 2.863 N/A LEU 107.A N LEU 63.A O no hydrogen 2.826 N/A ALA 110.A N ALA 65.A O no hydrogen 2.899 N/A ASN 111.A ND2 ILE 67.A O no hydrogen 3.068 N/A ASN 111.A ND2 LYS 127.A O no hydrogen 2.942 N/A GLY 114.A N ASN 111.A OD1 no hydrogen 3.048 N/A TYR 115.A N ASN 111.A O no hydrogen 3.033 N/A TYR 115.A OH HIS 11.A O no hydrogen 2.653 N/A VAL 116.A N PRO 112.A O no hydrogen 3.002 N/A TYR 117.A N ASP 113.A O no hydrogen 3.012 N/A THR 118.A N GLY 114.A O no hydrogen 2.833 N/A THR 118.A OG1 TYR 115.A O no hydrogen 2.740 N/A GLN 119.A N TYR 115.A O no hydrogen 3.250 N/A GLN 119.A N VAL 116.A O no hydrogen 2.975 N/A GLN 119.A NE2 HIS 11.A O no hydrogen 3.066 N/A THR 120.A N TYR 117.A O no hydrogen 3.249 N/A THR 120.A OG1 VAL 116.A O no hydrogen 2.744 N/A THR 120.A OG1 TYR 117.A O no hydrogen 3.554 N/A GLN 121.A N TYR 117.A O no hydrogen 2.787 N/A ASN 122.A N TYR 117.A O no hydrogen 3.002 N/A ARG 123.A NH1 ARG 70.A O no hydrogen 2.916 N/A ARG 123.A NH1 ARG 123.A O no hydrogen 2.957 N/A ARG 123.A NH2 PHE 278.A O no hydrogen 2.879 N/A TRP 125.A N ASN 122.A O no hydrogen 3.148 N/A TRP 125.A NE1 THR 128.A O no hydrogen 3.054 N/A ARG 126.A NE ASP 141.A OD2 no hydrogen 3.162 N/A ARG 126.A NE GLU 162.A O no hydrogen 3.077 N/A ARG 126.A NH1 ASP 141.A OD2 no hydrogen 2.730 N/A LYS 127.A NZ ILE 138.A O no hydrogen 3.315 N/A LYS 127.A NZ GLY 139.A O no hydrogen 3.033 N/A LYS 127.A NZ SER 161.A O no hydrogen 2.916 N/A THR 128.A N ALA 140.A O no hydrogen 2.918 N/A THR 128.A OG1 SER 130.A OG no hydrogen 3.252 N/A THR 128.A OG1 ALA 140.A O no hydrogen 3.376 N/A THR 128.A OG1 GLU 172.A OE1 no hydrogen 2.706 N/A SER 130.A OG THR 128.A OG1 no hydrogen 3.252 N/A SER 130.A OG GLU 172.A OE1 no hydrogen 2.677 N/A ASN 132.A ND2 CYS 137.A O no hydrogen 2.974 N/A ASN 132.A ND2 GLY 139.A O no hydrogen 3.254 N/A SER 135.A N ASN 132.A O no hydrogen 2.580 N/A CYS 137.A N SER 135.A OG no hydrogen 2.975 N/A GLY 139.A N SER 130.A O no hydrogen 2.784 N/A ALA 140.A N THR 128.A OG1 no hydrogen 3.097 N/A ASP 141.A N TYR 164.A O no hydrogen 2.792 N/A ASN 143.A N ASP 141.A OD1 no hydrogen 2.871 N/A ARG 144.A N ASP 141.A O no hydrogen 2.936 N/A ARG 144.A NE GLY 154.A O no hydrogen 2.947 N/A ARG 144.A NH1 ASN 143.A O no hydrogen 2.929 N/A ASN 145.A N PRO 142.A O no hydrogen 3.369 N/A ASN 145.A ND2 HIS 165.A O no hydrogen 2.901 N/A ASN 145.A ND2 HIS 168.A O no hydrogen 3.238 N/A ASN 145.A ND2 SER 171.A OG no hydrogen 2.965 N/A TRP 146.A N GLY 251.A O no hydrogen 2.889 N/A ALA 148.A N TRP 146.A O no hydrogen 2.855 N/A GLY 152.A N SER 149.A O no hydrogen 2.919 N/A SER 156.A N VAL 163.A O no hydrogen 2.998 N/A ASN 158.A N SER 156.A OG no hydrogen 2.976 N/A CYS 160.A N ASN 158.A OD1 no hydrogen 2.952 N/A SER 161.A N ASN 158.A O no hydrogen 2.934 N/A VAL 163.A N SER 161.A OG no hydrogen 2.923 N/A TYR 164.A N SER 161.A O no hydrogen 3.233 N/A HIS 165.A N SER 156.A O no hydrogen 3.147 N/A HIS 165.A ND1 GLY 166.A O no hydrogen 2.672 N/A HIS 165.A NE2 ASP 157.A OD1 no hydrogen 2.697 N/A HIS 168.A ND1 ALA 169.A O no hydrogen 3.170 N/A ASN 170.A N ASN 145.A O no hydrogen 2.777 N/A SER 171.A N HIS 168.A O no hydrogen 3.071 N/A SER 171.A OG HIS 168.A O no hydrogen 3.142 N/A SER 171.A OG GLU 172.A OE2 no hydrogen 2.815 N/A GLU 172.A N ASN 145.A OD1 no hydrogen 2.952 N/A GLU 174.A N GLU 174.A OE1 no hydrogen 2.752 N/A VAL 175.A N GLU 172.A O no hydrogen 2.907 N/A LYS 176.A N GLU 172.A O no hydrogen 2.975 N/A LYS 176.A NZ ASP 180.A OD2 no hydrogen 2.838 N/A SER 177.A N VAL 173.A O no hydrogen 2.869 N/A SER 177.A OG VAL 173.A O no hydrogen 2.717 N/A VAL 179.A N VAL 175.A O no hydrogen 2.959 N/A ASP 180.A N LYS 176.A O no hydrogen 2.784 N/A PHE 181.A N SER 177.A O no hydrogen 3.118 N/A ILE 182.A N VAL 178.A O no hydrogen 2.949 N/A GLN 183.A N VAL 179.A O no hydrogen 2.888 N/A LYS 184.A N ASP 180.A O no hydrogen 2.919 N/A HIS 185.A N PHE 181.A O no hydrogen 2.996 N/A GLY 186.A N ILE 182.A O no hydrogen 2.946 N/A ASN 187.A N HIS 185.A ND1 no hydrogen 2.946 N/A LYS 189.A N ALA 60.A O no hydrogen 2.689 N/A LYS 189.A NZ ASN 187.A OD1 no hydrogen 3.140 N/A GLY 190.A N ALA 60.A O no hydrogen 3.428 N/A PHE 191.A N PHE 264.A O no hydrogen 2.851 N/A ILE 192.A N TRP 62.A O no hydrogen 2.861 N/A ASP 193.A N PHE 266.A O no hydrogen 2.832 N/A LEU 194.A N ASN 64.A O no hydrogen 2.770 N/A HIS 195.A N PHE 268.A O no hydrogen 2.735 N/A HIS 195.A NE2 ASP 193.A OD2 no hydrogen 2.702 N/A SER 196.A N GLU 71.A OE1 no hydrogen 3.030 N/A SER 198.A N LEU 270.A O no hydrogen 3.100 N/A SER 198.A OG TYR 197.A O no hydrogen 2.549 N/A GLN 199.A N LEU 270.A O no hydrogen 3.327 N/A GLN 199.A NE2 GLU 236.A O no hydrogen 3.060 N/A LEU 200.A N GLU 269.A O no hydrogen 3.005 N/A LEU 201.A N GLN 238.A O no hydrogen 2.925 N/A MET 202.A N THR 267.A O no hydrogen 2.835 N/A TYR 203.A N GLY 240.A O no hydrogen 3.234 N/A TYR 203.A OH ASP 219.A OD2 no hydrogen 2.655 N/A TYR 205.A OH ASP 259.A OD2 no hydrogen 2.577 N/A GLY 206.A N ASP 255.A OD1 no hydrogen 3.343 N/A GLY 206.A N ASP 255.A OD2 no hydrogen 2.737 N/A TYR 207.A N ASP 255.A OD2 no hydrogen 3.158 N/A TYR 207.A OH ASP 259.A OD1 no hydrogen 2.623 N/A LYS 210.A N SER 208.A OG no hydrogen 2.974 N/A LYS 210.A NZ TYR 207.A OH no hydrogen 3.058 N/A LYS 211.A NZ ALA 212.A O no hydrogen 3.005 N/A LYS 211.A NZ GLU 216.A OE1 no hydrogen 2.980 N/A ASP 214.A N TYR 258.A OH no hydrogen 3.018 N/A ALA 215.A N ALA 212.A O no hydrogen 2.906 N/A LEU 218.A N ASP 214.A O no hydrogen 2.919 N/A ASP 219.A N ALA 215.A O no hydrogen 2.806 N/A LYS 220.A N GLU 216.A O no hydrogen 3.047 N/A VAL 221.A N GLU 217.A O no hydrogen 2.971 N/A ALA 222.A N LEU 218.A O no hydrogen 2.876 N/A ARG 223.A N ASP 219.A O no hydrogen 2.918 N/A ARG 223.A NE ASP 219.A OD1 no hydrogen 2.687 N/A ARG 223.A NH2 ASP 219.A OD2 no hydrogen 3.333 N/A LEU 224.A N LYS 220.A O no hydrogen 3.046 N/A ALA 225.A N VAL 221.A O no hydrogen 2.893 N/A ALA 226.A N ALA 222.A O no hydrogen 2.841 N/A LYS 227.A N ARG 223.A O no hydrogen 2.917 N/A ALA 228.A N LEU 224.A O no hydrogen 2.972 N/A LEU 229.A N ALA 225.A O no hydrogen 2.840 N/A ALA 230.A N ALA 226.A O no hydrogen 2.949 N/A SER 231.A N ALA 228.A O no hydrogen 3.090 N/A SER 231.A OG ALA 228.A O no hydrogen 2.624 N/A VAL 232.A N LEU 229.A O no hydrogen 3.345 N/A SER 233.A OG GLU 291.A OE1 no hydrogen 3.185 N/A GLY 234.A N ALA 230.A O no hydrogen 2.795 N/A THR 235.A OG1 GLU 291.A OE1 no hydrogen 2.676 N/A THR 235.A OG1 GLU 291.A OE2 no hydrogen 3.425 N/A GLN 238.A N GLN 199.A O no hydrogen 3.140 N/A GLY 240.A N LEU 201.A O no hydrogen 3.396 N/A THR 242.A N TYR 203.A O no hydrogen 2.985 N/A THR 242.A OG1 TYR 203.A O no hydrogen 3.477 N/A CYS 243.A N TYR 205.A O no hydrogen 2.888 N/A CYS 243.A SG.A GLY 206.A O no hydrogen 3.457 N/A CYS 243.A SG.B TYR 205.A O no hydrogen 3.148 N/A CYS 243.A SG.B SER 208.A O no hydrogen 3.108 N/A THR 245.A N PRO 241.A O no hydrogen 3.078 N/A THR 245.A N THR 242.A O no hydrogen 3.173 N/A THR 245.A OG1 PRO 241.A O no hydrogen 2.642 N/A VAL 246.A N THR 242.A O no hydrogen 3.030 N/A TYR 247.A N THR 242.A O no hydrogen 3.390 N/A ALA 249.A N GLY 206.A O no hydrogen 2.945 N/A SER 250.A N GLY 154.A O no hydrogen 3.093 N/A SER 250.A OG GLY 152.A O no hydrogen 2.749 N/A GLY 251.A N ALA 148.A O no hydrogen 2.828 N/A SER 253.A N ASN 143.A OD1 no hydrogen 2.833 N/A SER 253.A OG ASN 143.A OD1 no hydrogen 3.350 N/A SER 253.A OG ASP 193.A OD2 no hydrogen 2.693 N/A TRP 256.A N SER 252.A O no hydrogen 3.068 N/A ALA 257.A N SER 253.A O no hydrogen 2.870 N/A TYR 258.A N ILE 254.A O no hydrogen 2.906 N/A TYR 258.A OH ASP 214.A OD2 no hydrogen 2.631 N/A ASP 259.A N ASP 255.A O no hydrogen 2.923 N/A ASN 260.A N TRP 256.A O no hydrogen 3.006 N/A ASN 260.A N ALA 257.A O no hydrogen 3.036 N/A ASN 260.A ND2 TRP 256.A O no hydrogen 2.832 N/A GLY 261.A N TYR 258.A O no hydrogen 2.958 N/A ILE 262.A N ALA 257.A O no hydrogen 2.926 N/A LYS 263.A NZ GLU 217.A OE1 no hydrogen 2.750 N/A PHE 264.A N LYS 189.A O no hydrogen 3.418 N/A PHE 266.A N PHE 191.A O no hydrogen 3.028 N/A THR 267.A N MET 202.A O no hydrogen 2.836 N/A PHE 268.A N ASP 193.A O no hydrogen 2.910 N/A GLU 269.A N LEU 200.A O no hydrogen 2.777 N/A LEU 270.A N HIS 195.A O no hydrogen 2.796 N/A ARG 271.A NE GLU 291.A OE2 no hydrogen 2.795 N/A ARG 271.A NH1 GLN 284.A OE1 no hydrogen 2.974 N/A ARG 271.A NH2 GLU 291.A OE1 no hydrogen 2.903 N/A ARG 271.A NH2 GLU 291.A OE2 no hydrogen 3.480 N/A GLY 274.A N ASP 272.A OD1 no hydrogen 2.857 N/A TYR 276.A N ASP 272.A OD2 no hydrogen 2.788 N/A GLY 277.A N ASP 272.A OD1 no hydrogen 2.869 N/A LEU 279.A N TYR 276.A O no hydrogen 3.051 N/A GLN 284.A N PRO 281.A O no hydrogen 2.950 N/A ILE 285.A N ALA 282.A O no hydrogen 2.960 N/A THR 288.A N GLN 284.A O no hydrogen 2.921 N/A THR 288.A OG1 GLN 284.A O no hydrogen 2.736 N/A ALA 289.A N ILE 285.A O no hydrogen 2.833 N/A GLU 290.A N ILE 286.A O no hydrogen 2.838 N/A GLU 291.A N PRO 287.A O no hydrogen 3.267 N/A THR 292.A N THR 288.A O no hydrogen 2.956 N/A THR 292.A OG1 THR 288.A O no hydrogen 2.683 N/A TRP 293.A N ALA 289.A O no hydrogen 2.944 N/A LEU 294.A N GLU 291.A O no hydrogen 3.111 N/A GLY 295.A N GLU 291.A O no hydrogen 3.362 N/A LEU 296.A N THR 292.A O no hydrogen 2.768 N/A LYS 297.A N TRP 293.A O no hydrogen 2.810 N/A LYS 297.A NZ ASP 92.A OD2 no hydrogen 2.845 N/A THR 298.A N LEU 294.A O no hydrogen 3.029 N/A THR 298.A OG1 LEU 294.A O no hydrogen 2.841 N/A ILE 299.A N GLY 295.A O no hydrogen 3.154 N/A MET 300.A N LEU 296.A O no hydrogen 2.878 N/A GLU 301.A N LYS 297.A O no hydrogen 2.758 N/A HIS 302.A N THR 298.A O no hydrogen 3.172 N/A HIS 302.A NE2 GLU 217.A OE2 no hydrogen 2.765 N/A VAL 303.A N ILE 299.A O no hydrogen 2.971 N/A ARG 304.A N MET 300.A O no hydrogen 2.837 N/A ARG 304.A NE ASP 305.A OD1 no hydrogen 2.983 N/A ARG 304.A NH1 SER 97.A OG.A no hydrogen 3.372 N/A ARG 304.A NH1 SER 97.A OG.B no hydrogen 2.678 N/A ARG 304.A NH2 ASP 305.A OD1 no hydrogen 3.245 N/A ARG 304.A NH2 ASP 305.A OD2 no hydrogen 3.065 N/A ASP 305.A N GLU 301.A O no hydrogen 3.096 N/A ASN 306.A N VAL 303.A O no hydrogen 2.933 N/A ASN 306.A ND2 HIS 302.A O no hydrogen 2.781 N/A