Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 3a7a_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): SER 1.A N GLU 213.A OE1 no hydrogen 3.348 N/A THR 2.A N GLU 213.A OE2 no hydrogen 3.378 N/A THR 2.A OG1 GLU 213.A OE2 no hydrogen 3.300 N/A ARG 4.A N ARG 32.A O no hydrogen 3.038 N/A ARG 4.A NE GLU 218.A OE1 no hydrogen 3.108 N/A ARG 4.A NE GLU 218.A OE2 no hydrogen 3.194 N/A ARG 4.A NH2 GLU 218.A OE1 no hydrogen 2.940 N/A LEU 6.A N LEU 34.A O no hydrogen 2.967 N/A ILE 7.A N GLU 218.A O no hydrogen 2.936 N/A SER 8.A N LEU 36.A O no hydrogen 3.029 N/A SER 8.A OG SER 10.A O no hydrogen 3.523 N/A SER 8.A OG ASN 16.A OD1 no hydrogen 2.360 N/A ASP 9.A N ILE 220.A O no hydrogen 3.222 N/A SER 10.A N SER 8.A OG no hydrogen 3.297 N/A ASP 12.A N SER 10.A OG no hydrogen 3.170 N/A TRP 14.A N ASP 12.A OD2 no hydrogen 2.934 N/A TRP 14.A NE1 LEU 67.A O no hydrogen 2.924 N/A ASN 16.A N ASP 12.A O no hydrogen 2.713 N/A ASN 16.A ND2 SER 10.A O no hydrogen 2.822 N/A ASN 16.A ND2 ASN 39.A OD1 no hydrogen 3.017 N/A LEU 17.A N PRO 13.A O no hydrogen 2.691 N/A ALA 18.A N TRP 14.A O no hydrogen 2.974 N/A VAL 19.A N PHE 15.A O no hydrogen 3.012 N/A GLU 20.A N ASN 16.A O no hydrogen 3.077 N/A GLU 21.A N LEU 17.A O no hydrogen 3.369 N/A CYS 22.A N ALA 18.A O no hydrogen 3.153 N/A CYS 22.A SG ALA 18.A O no hydrogen 3.429 N/A CYS 22.A SG PRO 229.A O no hydrogen 3.939 N/A CYS 22.A SG THR 234.A OG1 no hydrogen 3.444 N/A ILE 23.A N VAL 19.A O no hydrogen 3.103 N/A PHE 24.A N GLU 20.A O no hydrogen 2.975 N/A ARG 25.A N GLU 21.A O no hydrogen 2.674 N/A GLN 26.A N CYS 22.A O no hydrogen 2.909 N/A ARG 32.A N THR 2.A O no hydrogen 3.049 N/A ARG 32.A NE GLU 94.A OE1 no hydrogen 3.045 N/A ARG 32.A NH1 THR 2.A OG1 no hydrogen 2.794 N/A VAL 33.A N MET 89.A O no hydrogen 2.527 N/A LEU 34.A N ARG 4.A O no hydrogen 3.031 N/A PHE 35.A N THR 87.A O no hydrogen 2.801 N/A LEU 36.A N LEU 6.A O no hydrogen 2.934 N/A TRP 37.A N CYS 85.A O no hydrogen 3.227 N/A TRP 37.A NE1 THR 87.A OG1 no hydrogen 3.216 N/A ASN 39.A ND2 HIS 79.A ND1 no hydrogen 2.816 N/A ALA 40.A N TYR 11.A O no hydrogen 3.059 N/A THR 42.A N HIS 79.A O no hydrogen 2.688 N/A THR 42.A OG1 ALA 40.A O no hydrogen 2.792 N/A VAL 43.A N ARG 66.A O no hydrogen 2.712 N/A VAL 44.A N VAL 77.A O no hydrogen 2.913 N/A ILE 45.A N ALA 68.A O no hydrogen 3.037 N/A GLY 46.A N GLN 49.A OE1 no hydrogen 2.915 N/A ARG 47.A N SER 72.A O no hydrogen 2.756 N/A GLN 49.A N GLY 46.A O no hydrogen 3.293 N/A GLN 49.A NE2 ILE 177.A O no hydrogen 3.402 N/A GLN 49.A NE2 SER 179.A OG no hydrogen 2.820 N/A LYS 53.A N ASN 50.A O no hydrogen 3.112 N/A LYS 53.A N ASN 50.A OD1 no hydrogen 2.986 N/A GLU 54.A N ASN 50.A O no hydrogen 2.976 N/A GLU 54.A N PRO 51.A O no hydrogen 3.177 N/A CYS 55.A N PRO 51.A O no hydrogen 3.086 N/A CYS 55.A SG PRO 51.A O no hydrogen 3.228 N/A ASN 56.A N TYR 164.A O no hydrogen 2.560 N/A ASN 56.A ND2 ASN 166.A O no hydrogen 3.145 N/A ASN 56.A ND2 ASP 168.A OD1 no hydrogen 2.774 N/A THR 57.A N CYS 55.A O no hydrogen 3.045 N/A THR 57.A OG1 ARG 337.A O no hydrogen 3.364 N/A THR 57.A OG1 ARG 337.A OXT no hydrogen 2.803 N/A ARG 58.A NE ASP 168.A OD2 no hydrogen 2.843 N/A ARG 58.A NH1 GLU 62.A OE2 no hydrogen 3.329 N/A ARG 58.A NH2 ASP 168.A OD1 no hydrogen 2.969 N/A ARG 58.A NH2 ASP 168.A OD2 no hydrogen 3.321 N/A ARG 59.A N ASN 56.A OD1 no hydrogen 2.854 N/A ARG 59.A NH1 ASN 166.A O no hydrogen 3.311 N/A MET 60.A N ASN 56.A O no hydrogen 2.757 N/A GLU 61.A N THR 57.A O no hydrogen 2.945 N/A GLU 62.A N ARG 58.A O no hydrogen 2.979 N/A ASP 63.A N ARG 59.A O no hydrogen 3.104 N/A ASN 64.A N GLU 61.A O no hydrogen 3.199 N/A ASN 64.A ND2 ASN 64.A O no hydrogen 2.518 N/A VAL 65.A N MET 60.A O no hydrogen 2.727 N/A ARG 66.A N ASP 41.A O no hydrogen 3.171 N/A ARG 66.A NH1 ASP 12.A OD2 no hydrogen 3.000 N/A ALA 68.A N VAL 43.A O no hydrogen 2.978 N/A ARG 69.A N ASN 244.A OD1 no hydrogen 3.361 N/A ARG 69.A NE TRP 243.A O no hydrogen 2.764 N/A ARG 69.A NE ASN 244.A O no hydrogen 3.255 N/A ARG 69.A NH1 GLY 46.A O no hydrogen 3.235 N/A ARG 69.A NH1 ARG 47.A O no hydrogen 2.517 N/A ARG 69.A NH1 GLN 49.A O no hydrogen 2.853 N/A ARG 69.A NH2 GLN 49.A O no hydrogen 3.029 N/A ARG 69.A NH2 ASN 244.A O no hydrogen 3.024 N/A ARG 70.A N ILE 45.A O no hydrogen 2.718 N/A ARG 70.A NE SER 72.A OG no hydrogen 2.882 N/A ARG 70.A NE GLY 73.A O no hydrogen 3.012 N/A ARG 70.A NH1 GLY 75.A O no hydrogen 3.109 N/A ARG 70.A NH2 GLY 73.A O no hydrogen 2.616 N/A ARG 70.A NH2 GLY 75.A O no hydrogen 2.814 N/A SER 72.A OG GLY 73.A O no hydrogen 3.494 N/A SER 72.A OG HIS 149.A NE2 no hydrogen 2.873 N/A ALA 76.A N SER 179.A OG no hydrogen 2.932 N/A VAL 77.A N VAL 44.A O no hydrogen 3.005 N/A HIS 79.A N THR 42.A O no hydrogen 2.765 N/A GLY 82.A N ASP 80.A OD1 no hydrogen 2.630 N/A ASN 83.A N ASP 80.A O no hydrogen 2.887 N/A THR 84.A N LEU 152.A O no hydrogen 3.081 N/A THR 84.A OG1 HIS 196.A ND1 no hydrogen 2.995 N/A CYS 85.A N TRP 37.A O no hydrogen 2.732 N/A PHE 86.A N GLY 150.A O no hydrogen 3.053 N/A THR 87.A N PHE 35.A O no hydrogen 2.850 N/A THR 87.A OG1 GLU 20.A OE2 no hydrogen 2.586 N/A PHE 88.A N HIS 148.A O no hydrogen 2.622 N/A MET 89.A N VAL 33.A O no hydrogen 2.560 N/A ALA 90.A N GLY 146.A O no hydrogen 3.170 N/A LYS 92.A N ASP 144.A O no hydrogen 2.603 N/A LYS 92.A NZ GLU 141.A OE1 no hydrogen 3.482 N/A LYS 92.A NZ THR 142.A O no hydrogen 3.159 N/A TYR 95.A N GLY 91.A O no hydrogen 2.937 N/A LYS 97.A NZ ARG 120.A O no hydrogen 3.309 N/A THR 98.A N ASP 96.A OD1 no hydrogen 3.151 N/A THR 98.A OG1 ASP 96.A OD1 no hydrogen 3.011 N/A THR 98.A OG1 ASP 96.A OD2 no hydrogen 2.959 N/A ILE 99.A N ASP 96.A O no hydrogen 2.766 N/A SER 100.A OG LYS 97.A O no hydrogen 2.661 N/A SER 100.A OG HIS 148.A ND1 no hydrogen 2.520 N/A THR 101.A N LYS 97.A O no hydrogen 2.971 N/A THR 101.A OG1 LYS 97.A O no hydrogen 3.128 N/A SER 102.A N THR 98.A O no hydrogen 3.141 N/A SER 102.A OG THR 98.A O no hydrogen 3.194 N/A SER 102.A OG ILE 99.A O no hydrogen 2.948 N/A ILE 103.A N ILE 99.A O no hydrogen 3.180 N/A VAL 104.A N SER 100.A O no hydrogen 3.050 N/A LEU 105.A N THR 101.A O no hydrogen 2.947 N/A ASN 106.A N SER 102.A O no hydrogen 2.498 N/A ALA 107.A N ILE 103.A O no hydrogen 3.063 N/A LEU 108.A N VAL 104.A O no hydrogen 2.990 N/A ASN 109.A N LEU 105.A O no hydrogen 3.062 N/A ALA 110.A N ASN 106.A O no hydrogen 2.889 N/A LEU 111.A N ALA 107.A O no hydrogen 3.109 N/A GLY 112.A N ASN 109.A O no hydrogen 2.682 N/A VAL 113.A N LEU 108.A O no hydrogen 2.716 N/A GLU 116.A N VAL 124.A O no hydrogen 2.984 N/A SER 118.A N ASP 122.A O no hydrogen 2.835 N/A ASP 122.A N SER 118.A O no hydrogen 2.973 N/A VAL 124.A N GLU 116.A O no hydrogen 3.086 N/A VAL 125.A N ARG 132.A O no hydrogen 2.934 N/A LYS 126.A NZ GLU 116.A OE2 no hydrogen 2.884 N/A LYS 126.A NZ ASP 131.A OD1 no hydrogen 3.145 N/A LYS 126.A NZ ASP 131.A OD2 no hydrogen 3.233 N/A THR 127.A N GLY 130.A O no hydrogen 3.087 N/A THR 127.A OG1 GLY 130.A O no hydrogen 2.498 N/A ARG 132.A N VAL 125.A O no hydrogen 3.132 N/A ARG 132.A NH1 GLU 129.A O no hydrogen 3.116 N/A ARG 132.A NH1 ASP 131.A O no hydrogen 2.652 N/A LYS 133.A N ARG 183.A O no hydrogen 2.700 N/A LYS 133.A NZ ASP 122.A OD1 no hydrogen 3.119 N/A VAL 134.A N LEU 123.A O no hydrogen 2.853 N/A SER 135.A OG THR 151.A O no hydrogen 2.512 N/A SER 137.A N ASN 121.A O no hydrogen 2.959 N/A SER 137.A OG HIS 148.A NE2 no hydrogen 3.008 N/A ALA 138.A N HIS 149.A O no hydrogen 3.111 N/A TYR 139.A OH ARG 120.A O no hydrogen 2.954 N/A ARG 140.A N PHE 147.A O no hydrogen 3.250 N/A THR 142.A N ARG 145.A O no hydrogen 3.423 N/A THR 142.A OG1 ASP 144.A OD1 no hydrogen 3.048 N/A ARG 145.A N THR 142.A OG1 no hydrogen 2.933 N/A PHE 147.A N ARG 140.A O no hydrogen 2.956 N/A HIS 148.A N PHE 88.A O no hydrogen 2.753 N/A HIS 148.A ND1 SER 100.A OG no hydrogen 2.520 N/A HIS 148.A NE2 SER 137.A OG no hydrogen 3.008 N/A HIS 149.A N ALA 138.A O no hydrogen 3.386 N/A HIS 149.A ND1 GLU 20.A OE2 no hydrogen 2.747 N/A HIS 149.A NE2 SER 72.A OG no hydrogen 2.873 N/A GLY 150.A N PHE 86.A O no hydrogen 2.862 N/A THR 151.A N GLY 136.A O no hydrogen 2.942 N/A LEU 152.A N THR 84.A O no hydrogen 2.765 N/A LEU 153.A N VAL 134.A O no hydrogen 2.959 N/A LEU 154.A N GLY 82.A O no hydrogen 3.101 N/A ASN 155.A N GLY 82.A O no hydrogen 3.216 N/A ALA 156.A N ASN 186.A OD1 no hydrogen 2.633 N/A ASP 157.A N ASP 80.A OD2 no hydrogen 3.047 N/A SER 159.A N ASP 157.A OD1 no hydrogen 3.268 N/A SER 159.A OG ASP 157.A OD1 no hydrogen 2.968 N/A ARG 160.A N ASP 157.A OD1 no hydrogen 3.444 N/A ARG 160.A NH1 ASP 41.A OD1 no hydrogen 2.293 N/A LEU 161.A N ASP 157.A O no hydrogen 2.980 N/A ALA 162.A N LEU 158.A O no hydrogen 2.812 N/A ASN 163.A N SER 159.A O no hydrogen 2.857 N/A TYR 164.A N ARG 160.A O no hydrogen 2.958 N/A TYR 164.A OH ASP 63.A OD2 no hydrogen 2.644 N/A LEU 165.A N LEU 161.A O no hydrogen 3.140 N/A ASN 166.A N ASN 163.A O no hydrogen 2.937 N/A LYS 170.A NZ ARG 337.A O no hydrogen 2.706 N/A ALA 173.A N SER 252.A O no hydrogen 2.926 N/A LYS 175.A N ALA 250.A O no hydrogen 3.115 N/A ILE 177.A N ALA 48.A O no hydrogen 2.906 N/A SER 179.A N GLU 54.A OE1 no hydrogen 2.642 N/A SER 179.A OG GLU 54.A OE1 no hydrogen 2.329 N/A ARG 181.A NH2 LEU 165.A O no hydrogen 3.131 N/A THR 185.A N LYS 133.A O no hydrogen 3.138 N/A ASN 186.A ND2 ALA 156.A O no hydrogen 3.030 N/A LEU 187.A N LEU 153.A O no hydrogen 2.646 N/A LEU 191.A N LEU 187.A O no hydrogen 2.998 N/A THR 195.A N GLN 198.A OE1 no hydrogen 3.450 N/A HIS 196.A ND1 THR 84.A OG1 no hydrogen 2.995 N/A VAL 199.A N THR 195.A O no hydrogen 3.286 N/A CYS 200.A N HIS 196.A O no hydrogen 2.774 N/A CYS 200.A SG HIS 196.A O no hydrogen 3.458 N/A GLU 201.A N GLU 197.A O no hydrogen 3.286 N/A ALA 202.A N GLN 198.A O no hydrogen 3.271 N/A ILE 203.A N VAL 199.A O no hydrogen 3.141 N/A THR 204.A N CYS 200.A O no hydrogen 2.880 N/A THR 204.A OG1 CYS 200.A O no hydrogen 2.850 N/A GLU 205.A N GLU 201.A O no hydrogen 2.678 N/A ALA 206.A N ALA 202.A O no hydrogen 2.933 N/A PHE 207.A N ILE 203.A O no hydrogen 3.076 N/A PHE 208.A N THR 204.A O no hydrogen 2.844 N/A ALA 209.A N GLU 205.A O no hydrogen 2.857 N/A HIS 210.A N ALA 206.A O no hydrogen 2.976 N/A TYR 211.A N PHE 207.A O no hydrogen 3.459 N/A GLY 212.A N ALA 209.A O no hydrogen 3.017 N/A GLU 213.A N PHE 208.A O no hydrogen 3.232 N/A ARG 214.A NH2 GLU 205.A OE1 no hydrogen 3.051 N/A ARG 214.A NH2 GLU 205.A OE2 no hydrogen 3.170 N/A GLU 218.A N LEU 5.A O no hydrogen 2.921 N/A ILE 220.A N ILE 7.A O no hydrogen 2.799 N/A ASN 230.A ND2 ASN 230.A O no hydrogen 2.826 N/A THR 234.A N ASN 230.A O no hydrogen 3.432 N/A THR 234.A OG1 ASN 230.A O no hydrogen 2.903 N/A THR 234.A OG1 PHE 231.A O no hydrogen 3.285 N/A PHE 235.A N PHE 231.A O no hydrogen 3.139 N/A ALA 236.A N ALA 232.A O no hydrogen 2.934 N/A ARG 237.A N GLU 233.A O no hydrogen 3.115 N/A GLN 238.A N THR 234.A O no hydrogen 2.651 N/A GLN 238.A NE2 ARG 69.A O no hydrogen 2.720 N/A GLN 238.A NE2 GLN 238.A O no hydrogen 3.188 N/A GLN 238.A NE2 ASN 244.A OD1 no hydrogen 3.404 N/A SER 239.A N PHE 235.A O no hydrogen 2.905 N/A SER 239.A OG PHE 235.A O no hydrogen 2.838 N/A SER 240.A N ARG 237.A O no hydrogen 2.858 N/A SER 240.A OG ARG 237.A O no hydrogen 2.866 N/A GLU 242.A N GLU 242.A OE1 no hydrogen 2.713 N/A TRP 243.A N SER 240.A O no hydrogen 2.853 N/A TRP 243.A N SER 240.A OG no hydrogen 3.159 N/A TRP 243.A NE1 ARG 69.A O no hydrogen 2.838 N/A ASN 244.A N SER 240.A O no hydrogen 2.979 N/A ASN 244.A ND2 GLN 238.A O no hydrogen 3.084 N/A PHE 245.A N TRP 241.A O no hydrogen 2.897 N/A GLY 246.A N TRP 241.A O no hydrogen 2.736 N/A ALA 248.A N PHE 245.A O no hydrogen 3.269 N/A PHE 251.A N VAL 270.A O no hydrogen 3.186 N/A SER 252.A N ALA 173.A O no hydrogen 2.721 N/A SER 252.A OG ASP 269.A OD1 no hydrogen 2.770 N/A HIS 253.A N PHE 268.A O no hydrogen 2.863 N/A HIS 253.A ND1 TYR 302.A OH no hydrogen 2.379 N/A LEU 254.A N LYS 171.A O no hydrogen 2.863 N/A LEU 255.A N LEU 266.A O no hydrogen 2.904 N/A GLU 257.A N VAL 264.A O no hydrogen 2.947 N/A ARG 258.A N GLU 257.A OE1 no hydrogen 2.930 N/A ARG 258.A NH2 PHE 259.A O no hydrogen 3.150 N/A PHE 259.A N GLY 262.A O no hydrogen 2.665 N/A TRP 261.A NE1 GLU 327.A OE1 no hydrogen 2.983 N/A GLY 262.A N PHE 259.A O no hydrogen 2.310 N/A GLY 263.A N ASP 283.A OD1 no hydrogen 2.616 N/A VAL 264.A N GLU 257.A O no hydrogen 3.010 N/A GLU 265.A N PHE 281.A O no hydrogen 3.060 N/A LEU 266.A N LEU 255.A O no hydrogen 2.663 N/A HIS 267.A N GLN 279.A O no hydrogen 3.105 N/A HIS 267.A NE2 ASP 269.A OD1 no hydrogen 3.079 N/A PHE 268.A N HIS 253.A O no hydrogen 2.881 N/A ASP 269.A N ARG 277.A O no hydrogen 2.987 N/A VAL 270.A N PHE 251.A O no hydrogen 2.780 N/A GLU 271.A N HIS 274.A O no hydrogen 2.989 N/A HIS 274.A N GLU 271.A O no hydrogen 2.930 N/A HIS 274.A ND1 GLY 299.A O no hydrogen 2.845 N/A ILE 275.A N CYS 300.A O no hydrogen 2.811 N/A THR 276.A N ASP 269.A O no hydrogen 2.765 N/A THR 276.A OG1 ASP 269.A O no hydrogen 3.503 N/A ARG 277.A NH1 ASP 269.A OD2 no hydrogen 2.692 N/A GLN 279.A N HIS 267.A O no hydrogen 2.992 N/A PHE 281.A N GLU 265.A O no hydrogen 3.141 N/A THR 282.A OG1 GLY 263.A O no hydrogen 2.734 N/A SER 284.A N THR 282.A OG1 no hydrogen 2.860 N/A ASN 286.A N SER 284.A OG no hydrogen 2.937 N/A GLU 291.A N PRO 287.A O no hydrogen 2.722 N/A ALA 292.A N ALA 288.A O no hydrogen 3.023 N/A LEU 293.A N PRO 289.A O no hydrogen 2.800 N/A ALA 294.A N LEU 290.A O no hydrogen 3.161 N/A ARG 296.A N ALA 292.A O no hydrogen 3.126 N/A GLN 298.A N GLY 295.A O no hydrogen 3.193 N/A GLY 299.A N ILE 275.A O no hydrogen 2.694 N/A CYS 300.A SG LEU 301.A O no hydrogen 3.663 N/A TYR 302.A N GLY 273.A O no hydrogen 2.874 N/A TYR 302.A OH HIS 253.A ND1 no hydrogen 2.379 N/A ARG 303.A NE ASP 305.A OD1 no hydrogen 3.408 N/A ARG 303.A NE ASP 305.A OD2 no hydrogen 3.428 N/A ARG 303.A NH2 ASP 305.A OD2 no hydrogen 3.038 N/A MET 306.A N ASP 305.A OD1 no hydrogen 2.295 N/A LEU 307.A N ARG 303.A O no hydrogen 3.021 N/A GLN 308.A N ALA 304.A O no hydrogen 2.852 N/A GLN 308.A NE2 SER 329.A O no hydrogen 3.571 N/A GLN 308.A NE2 SER 329.A OG no hydrogen 3.429 N/A GLN 309.A N ASP 305.A O no hydrogen 2.799 N/A GLU 310.A N MET 306.A O no hydrogen 2.960 N/A CYS 311.A N LEU 307.A O no hydrogen 3.307 N/A CYS 311.A SG LEU 307.A O no hydrogen 3.248 N/A GLU 312.A N GLN 308.A O no hydrogen 3.043 N/A ALA 313.A N GLN 309.A O no hydrogen 2.859 N/A LEU 314.A N CYS 311.A O no hydrogen 2.612 N/A LEU 315.A N CYS 311.A O no hydrogen 3.066 N/A ASP 317.A N LEU 314.A O no hydrogen 2.770 N/A PHE 318.A N LEU 314.A O no hydrogen 2.978 N/A PHE 318.A N LEU 315.A O no hydrogen 3.076 N/A GLN 321.A N PHE 318.A O no hydrogen 3.157 N/A GLU 322.A N PRO 319.A O no hydrogen 2.977 N/A GLU 324.A N GLU 324.A OE1 no hydrogen 2.492 N/A LEU 325.A N GLN 321.A O no hydrogen 3.175 N/A ARG 326.A N LYS 323.A O no hydrogen 3.084 N/A GLU 327.A N LYS 323.A O no hydrogen 3.370 N/A LEU 328.A N GLU 324.A O no hydrogen 2.865 N/A SER 329.A N LEU 325.A O no hydrogen 3.178 N/A ALA 330.A N ARG 326.A O no hydrogen 3.096 N/A TRP 331.A N GLU 327.A O no hydrogen 2.703 N/A MET 332.A N LEU 328.A O no hydrogen 2.684 N/A ALA 333.A N SER 329.A O no hydrogen 2.890 N/A ALA 335.A N TRP 331.A O no hydrogen 3.022 N/A ARG 337.A N GLY 334.A O no hydrogen 2.948 N/A ARG 337.A NH1 GLU 61.A OE1 no hydrogen 3.473 N/A