Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 3txv_A.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): ILE 3.A N ALA 239.A O no hydrogen 2.904 N/A SER 5.A N LEU 241.A O no hydrogen 2.670 N/A SER 5.A OG GLU 30.A OE2 no hydrogen 2.544 N/A ILE 6.A N LEU 28.A O no hydrogen 3.061 N/A CYS 7.A N VAL 243.A O no hydrogen 3.162 N/A LEU 12.A N HIS 10.A ND1 no hydrogen 3.085 N/A ILE 14.A N HIS 10.A O no hydrogen 2.921 N/A GLU 15.A N PRO 11.A O no hydrogen 2.958 N/A ALA 16.A N LEU 12.A O no hydrogen 2.907 N/A ALA 17.A N VAL 13.A O no hydrogen 2.702 N/A ARG 19.A N ALA 16.A O no hydrogen 3.194 N/A ARG 19.A NE ASP 369.A OD1 no hydrogen 3.443 N/A ARG 19.A NH2 ASP 369.A OD2 no hydrogen 2.554 N/A ALA 20.A N ALA 17.A O no hydrogen 3.167 N/A ARG 22.A N LEU 18.A O no hydrogen 3.339 N/A GLU 23.A N ALA 20.A O no hydrogen 2.609 N/A VAL 27.A N LYS 66.A O no hydrogen 3.133 N/A ILE 29.A N LEU 68.A O no hydrogen 2.779 N/A GLU 30.A N ILE 6.A O no hydrogen 2.962 N/A ALA 31.A N GLY 70.A O no hydrogen 3.197 N/A CYS 33.A N ASP 72.A O no hydrogen 2.982 N/A CYS 33.A SG HIS 73.A O no hydrogen 2.813 N/A GLN 35.A NE2 THR 32.A OG1 no hydrogen 3.373 N/A VAL 36.A N THR 32.A O no hydrogen 3.038 N/A ASN 37.A ND2 CYS 33.A O no hydrogen 2.821 N/A GLN 38.A N GLN 38.A OE1 no hydrogen 2.627 N/A GLN 38.A NE2 LYS 89.A O no hydrogen 3.510 N/A ASP 39.A N ASN 37.A OD1 no hydrogen 3.075 N/A GLY 40.A N ASN 37.A O no hydrogen 2.754 N/A GLY 41.A N ASN 37.A OD1 no hydrogen 3.133 N/A TYR 42.A N ASN 34.A O no hydrogen 3.210 N/A THR 43.A OG1 GLN 35.A O no hydrogen 3.329 N/A GLY 44.A N GLY 40.A O no hydrogen 2.746 N/A ASP 48.A N THR 45.A OG1 no hydrogen 3.286 N/A PHE 49.A N THR 45.A O no hydrogen 3.079 N/A THR 50.A N PRO 46.A O no hydrogen 3.266 N/A THR 50.A OG1 ALA 99.A O no hydrogen 3.333 N/A ARG 51.A N ASP 48.A O no hydrogen 3.107 N/A PHE 52.A N ASP 48.A O no hydrogen 2.866 N/A VAL 53.A N PHE 49.A O no hydrogen 3.011 N/A ALA 55.A N ARG 51.A O no hydrogen 2.794 N/A ALA 55.A N PHE 52.A O no hydrogen 3.152 N/A ALA 57.A N VAL 53.A O no hydrogen 3.269 N/A ASP 58.A N GLY 54.A O no hydrogen 3.127 N/A ARG 59.A N ALA 55.A O no hydrogen 3.084 N/A ILE 60.A N ALA 57.A O no hydrogen 3.288 N/A GLU 61.A N ASP 58.A O no hydrogen 2.706 N/A PHE 62.A N ALA 57.A O no hydrogen 2.755 N/A ARG 64.A NE ASP 58.A OD1 no hydrogen 3.537 N/A ARG 64.A NH2 ASP 58.A OD1 no hydrogen 3.364 N/A ARG 64.A NH2 ASP 58.A OD2 no hydrogen 3.093 N/A LYS 66.A N PRO 63.A O no hydrogen 2.711 N/A ILE 67.A N ARG 64.A O no hydrogen 3.178 N/A LEU 68.A N VAL 27.A O no hydrogen 2.824 N/A GLY 70.A N ILE 29.A O no hydrogen 2.637 N/A GLY 71.A N LYS 103.A O no hydrogen 2.828 N/A ASP 72.A N ALA 31.A O no hydrogen 2.537 N/A HIS 73.A N HIS 105.A ND1 no hydrogen 2.967 N/A HIS 73.A ND1 ASP 107.A OD2 no hydrogen 2.910 N/A LEU 74.A N HIS 105.A O no hydrogen 2.806 N/A ASN 77.A ND2 ASN 34.A OD1 no hydrogen 3.171 N/A TRP 79.A N PRO 76.A O no hydrogen 2.832 N/A LYS 80.A N ASN 77.A O no hydrogen 3.287 N/A LEU 82.A N TRP 79.A O no hydrogen 2.962 N/A GLU 86.A N PRO 83.A O no hydrogen 2.950 N/A ALA 87.A N PRO 83.A O no hydrogen 2.872 N/A LYS 89.A N GLU 86.A O no hydrogen 3.251 N/A LYS 89.A N ALA 87.A O no hydrogen 3.299 N/A LYS 89.A NZ ASP 39.A OD1 no hydrogen 3.279 N/A ALA 90.A N ALA 87.A O no hydrogen 3.098 N/A ALA 92.A N ALA 88.A O no hydrogen 3.102 N/A THR 94.A N GLU 91.A O no hydrogen 3.338 N/A THR 94.A OG1 GLU 91.A O no hydrogen 3.011 N/A ALA 95.A N ALA 92.A O no hydrogen 3.214 N/A TYR 96.A OH VAL 36.A O no hydrogen 2.660 N/A ALA 97.A N ILE 93.A O no hydrogen 2.942 N/A LYS 98.A N THR 94.A O no hydrogen 2.737 N/A ALA 99.A N TYR 96.A O no hydrogen 2.734 N/A GLY 100.A N ALA 97.A O no hydrogen 3.226 N/A THR 102.A N LEU 69.A O no hydrogen 2.943 N/A LYS 103.A N LEU 69.A O no hydrogen 3.248 N/A LYS 103.A NZ GLU 30.A OE1 no hydrogen 3.278 N/A LYS 103.A NZ GLU 30.A OE2 no hydrogen 2.566 N/A LYS 103.A NZ GLU 218.A OE1 no hydrogen 2.932 N/A LEU 104.A N VAL 141.A O no hydrogen 3.047 N/A HIS 105.A N GLY 71.A O no hydrogen 3.006 N/A HIS 105.A ND1 ASP 72.A OD1 no hydrogen 3.178 N/A HIS 105.A NE2 GLY 145.A O no hydrogen 2.805 N/A LEU 106.A N ILE 143.A O no hydrogen 2.818 N/A ASP 107.A N LEU 74.A O no hydrogen 2.977 N/A THR 108.A OG1 THR 123.A O no hydrogen 2.630 N/A SER 109.A N ASP 107.A OD1 no hydrogen 3.384 N/A SER 109.A OG ASP 107.A OD1 no hydrogen 2.666 N/A SER 109.A OG THR 146.A OG1 no hydrogen 3.029 N/A CYS 111.A N GLU 114.A OE2 no hydrogen 2.941 N/A ALA 112.A N LYS 80.A O no hydrogen 3.065 N/A LEU 118.A N SER 109.A O no hydrogen 2.840 N/A THR 123.A N PRO 119.A O no hydrogen 3.177 N/A ALA 124.A N ASP 120.A O no hydrogen 2.953 N/A ALA 125.A N ALA 121.A O no hydrogen 2.840 N/A ARG 126.A N THR 122.A O no hydrogen 3.092 N/A ARG 126.A NH1 GLU 114.A OE2 no hydrogen 3.542 N/A ARG 126.A NH2 GLU 114.A OE1 no hydrogen 3.276 N/A ALA 127.A N THR 123.A O no hydrogen 3.069 N/A ALA 128.A N ALA 124.A O no hydrogen 2.847 N/A ARG 129.A N ALA 125.A O no hydrogen 3.151 N/A ARG 129.A NH1 GLU 91.A OE1 no hydrogen 3.287 N/A LEU 130.A N ARG 126.A O no hydrogen 3.233 N/A ALA 131.A N ALA 127.A O no hydrogen 3.019 N/A ALA 132.A N ALA 128.A O no hydrogen 3.053 N/A VAL 133.A N ARG 129.A O no hydrogen 3.052 N/A VAL 133.A N LEU 130.A O no hydrogen 3.249 N/A ALA 134.A N LEU 130.A O no hydrogen 2.887 N/A GLU 135.A N ALA 131.A O no hydrogen 2.985 N/A ALA 137.A N VAL 133.A O no hydrogen 3.268 N/A ALA 137.A N ALA 134.A O no hydrogen 3.056 N/A VAL 138.A N GLU 135.A O no hydrogen 2.835 N/A VAL 141.A N THR 102.A O no hydrogen 3.031 N/A TYR 142.A N ARG 178.A O no hydrogen 2.849 N/A TYR 142.A OH GLU 135.A OE2 no hydrogen 3.000 N/A ILE 143.A N LEU 104.A O no hydrogen 2.858 N/A ILE 144.A N GLY 181.A O no hydrogen 2.981 N/A THR 146.A OG1 ASP 107.A OD1 no hydrogen 2.978 N/A THR 146.A OG1 ASP 107.A OD2 no hydrogen 2.744 N/A THR 146.A OG1 SER 109.A OG no hydrogen 3.029 N/A THR 151.A N GLN 185.A O no hydrogen 2.827 N/A GLU 154.A N GLU 154.A OE1 no hydrogen 3.011 N/A ALA 156.A N ALA 152.A O no hydrogen 3.204 N/A ILE 157.A N PRO 153.A O no hydrogen 3.376 N/A GLU 158.A N GLU 154.A O no hydrogen 2.939 N/A THR 159.A N ALA 155.A O no hydrogen 2.957 N/A THR 159.A OG1 ALA 155.A O no hydrogen 2.741 N/A VAL 160.A N ALA 156.A O no hydrogen 3.434 N/A ARG 161.A N ILE 157.A O no hydrogen 2.738 N/A ARG 161.A NH2 GLU 158.A OE2 no hydrogen 2.532 N/A VAL 162.A N GLU 158.A O no hydrogen 2.836 N/A HIS 163.A N THR 159.A O no hydrogen 2.928 N/A HIS 163.A ND1 THR 159.A O no hydrogen 3.034 N/A ARG 164.A N VAL 160.A O no hydrogen 3.083 N/A ALA 165.A N ARG 161.A O no hydrogen 3.089 N/A ALA 166.A N VAL 162.A O no hydrogen 3.140 N/A PHE 167.A N HIS 163.A O no hydrogen 2.757 N/A PHE 167.A N ARG 164.A O no hydrogen 2.961 N/A GLU 168.A N ARG 164.A O no hydrogen 3.176 N/A GLU 169.A N ALA 165.A O no hydrogen 2.994 N/A ALA 170.A N ALA 166.A O no hydrogen 3.181 N/A GLY 171.A N GLU 168.A O no hydrogen 2.776 N/A ALA 172.A N PHE 167.A O no hydrogen 2.696 N/A ALA 175.A N ALA 172.A O no hydrogen 2.727 N/A PHE 176.A N ALA 172.A O no hydrogen 3.196 N/A SER 177.A OG GLY 174.A O no hydrogen 2.654 N/A ARG 178.A N ALA 175.A O no hydrogen 2.723 N/A ARG 178.A NH2 GLU 135.A OE2 no hydrogen 2.810 N/A VAL 179.A N PHE 176.A O no hydrogen 3.162 N/A VAL 180.A N TYR 142.A O no hydrogen 2.866 N/A ALA 182.A N VAL 216.A O no hydrogen 3.333 N/A VAL 183.A N ILE 144.A O no hydrogen 2.817 N/A VAL 184.A N GLU 218.A O no hydrogen 3.277 N/A GLN 185.A N THR 151.A OG1 no hydrogen 2.663 N/A GLY 191.A N ASN 194.A O no hydrogen 2.736 N/A ILE 196.A N GLU 189.A O no hydrogen 3.152 N/A TYR 198.A N GLN 225.A OE1 no hydrogen 3.101 N/A TYR 198.A OH ASP 236.A OD2 no hydrogen 2.526 N/A ARG 200.A NH1 ASP 236.A OD2 no hydrogen 3.546 N/A SER 207.A OG ASP 236.A O no hydrogen 2.523 N/A ALA 208.A N GLU 204.A O no hydrogen 2.863 N/A THR 209.A N LEU 206.A O no hydrogen 3.204 N/A THR 209.A OG1 LYS 205.A O no hydrogen 3.294 N/A THR 209.A OG1 LEU 206.A O no hydrogen 3.551 N/A LEU 210.A N SER 207.A O no hydrogen 3.343 N/A GLY 211.A N ALA 208.A O no hydrogen 2.771 N/A GLN 212.A N THR 209.A O no hydrogen 3.178 N/A PHE 217.A N GLY 237.A O no hydrogen 2.958 N/A GLU 218.A N ALA 182.A O no hydrogen 3.000 N/A ALA 219.A N ILE 240.A O no hydrogen 2.700 N/A HIS 220.A ND1 GLU 147.A OE2 no hydrogen 3.095 N/A HIS 220.A NE2 GLU 218.A OE2 no hydrogen 2.790 N/A THR 222.A OG1 LYS 242.A O no hydrogen 2.855 N/A THR 222.A OG1 TYR 375.A OH no hydrogen 3.290 N/A TYR 224.A OH TYR 307.A O no hydrogen 2.630 N/A GLN 225.A N THR 222.A O no hydrogen 3.130 N/A GLN 225.A NE2 ILE 196.A O no hydrogen 2.557 N/A ALA 229.A N THR 226.A OG1 no hydrogen 3.170 N/A LEU 230.A N THR 226.A O no hydrogen 2.887 N/A ARG 231.A N PRO 227.A O no hydrogen 3.153 N/A ARG 231.A N ASP 228.A O no hydrogen 2.792 N/A GLU 232.A N ASP 228.A O no hydrogen 3.035 N/A LEU 233.A N ALA 229.A O no hydrogen 2.834 N/A ALA 235.A N ARG 231.A O no hydrogen 3.102 N/A ASP 236.A N GLU 232.A O no hydrogen 2.917 N/A GLY 237.A N VAL 234.A O no hydrogen 2.708 N/A PHE 238.A N LEU 233.A O no hydrogen 2.921 N/A ALA 239.A N PHE 217.A O no hydrogen 2.837 N/A ILE 240.A N PHE 217.A O no hydrogen 3.186 N/A LEU 241.A N ILE 3.A O no hydrogen 3.241 N/A LYS 242.A N ALA 219.A O no hydrogen 2.957 N/A LYS 242.A NZ GLU 30.A OE1 no hydrogen 3.382 N/A LYS 242.A NZ GLU 30.A OE2 no hydrogen 3.422 N/A LYS 242.A NZ GLU 218.A OE2 no hydrogen 2.961 N/A VAL 243.A N SER 5.A O no hydrogen 2.895 N/A GLY 244.A N ASP 223.A OD2 no hydrogen 3.056 N/A GLY 246.A N ASP 223.A OD2 no hydrogen 2.479 N/A LEU 247.A N GLY 244.A O no hydrogen 2.754 N/A THR 248.A N GLY 244.A O no hydrogen 3.430 N/A THR 248.A OG1 PRO 245.A O no hydrogen 3.380 N/A THR 248.A OG1 ASP 309.A OD2 no hydrogen 2.509 N/A PHE 249.A N PRO 245.A O no hydrogen 2.799 N/A ALA 250.A N GLY 246.A O no hydrogen 3.513 N/A LEU 251.A N LEU 247.A O no hydrogen 3.395 N/A ARG 252.A N THR 248.A O no hydrogen 2.916 N/A GLU 253.A N PHE 249.A O no hydrogen 3.113 N/A ALA 254.A N ALA 250.A O no hydrogen 2.985 N/A LEU 255.A N LEU 251.A O no hydrogen 2.881 N/A TYR 256.A N ARG 252.A O no hydrogen 2.768 N/A TYR 256.A OH HIS 304.A ND1 no hydrogen 2.969 N/A GLY 257.A N GLU 253.A O no hydrogen 2.781 N/A LEU 258.A N ALA 254.A O no hydrogen 2.747 N/A ASP 259.A N LEU 255.A O no hydrogen 2.666 N/A GLN 260.A N TYR 256.A O no hydrogen 2.973 N/A GLN 260.A NE2 TYR 256.A O no hydrogen 2.528 N/A ILE 261.A N GLY 257.A O no hydrogen 2.842 N/A ALA 262.A N LEU 258.A O no hydrogen 2.947 N/A ALA 263.A N ASP 259.A O no hydrogen 2.976 N/A PHE 264.A N GLN 260.A O no hydrogen 3.157 N/A PHE 264.A N ILE 261.A O no hydrogen 3.253 N/A LEU 265.A N ILE 261.A O no hydrogen 2.862 N/A PHE 266.A N ALA 262.A O no hydrogen 2.972 N/A ALA 269.A N PHE 266.A O no hydrogen 3.072 N/A ARG 270.A NH1 ASP 259.A OD1 no hydrogen 2.831 N/A ARG 270.A NH2 ASP 259.A O no hydrogen 3.140 N/A ARG 270.A NH2 ASP 259.A OD1 no hydrogen 2.980 N/A THR 273.A N GLU 276.A OE1 no hydrogen 3.077 N/A LEU 274.A N ASP 259.A OD1 no hydrogen 2.813 N/A ALA 275.A N ASP 259.A OD2 no hydrogen 3.274 N/A VAL 277.A N THR 273.A O no hydrogen 3.053 N/A THR 278.A N LEU 274.A O no hydrogen 2.750 N/A GLU 279.A N ALA 275.A O no hydrogen 3.023 N/A ALA 280.A N GLU 276.A O no hydrogen 3.112 N/A VAL 281.A N VAL 277.A O no hydrogen 3.120 N/A GLU 283.A N ALA 280.A O no hydrogen 3.107 N/A GLU 284.A N VAL 281.A O no hydrogen 3.226 N/A TRP 288.A N PRO 285.A O no hydrogen 2.826 N/A TYR 291.A N TRP 288.A O no hydrogen 2.924 N/A TYR 292.A N TRP 288.A O no hydrogen 3.318 N/A GLU 298.A N SER 295.A OG no hydrogen 3.074 N/A GLN 299.A N SER 295.A O no hydrogen 2.930 N/A ARG 300.A N ALA 296.A O no hydrogen 3.046 N/A LEU 301.A N GLU 297.A O no hydrogen 3.267 N/A GLN 302.A N GLU 298.A O no hydrogen 3.335 N/A GLN 302.A NE2 GLU 193.A OE2 no hydrogen 3.231 N/A ARG 303.A N GLN 299.A O no hydrogen 2.906 N/A ARG 303.A N ARG 300.A O no hydrogen 2.883 N/A ARG 303.A NE GLU 279.A OE2 no hydrogen 2.383 N/A ARG 303.A NH2 GLU 279.A OE2 no hydrogen 2.924 N/A HIS 304.A N LEU 301.A O no hydrogen 3.329 N/A HIS 304.A ND1 TYR 256.A OH no hydrogen 2.969 N/A PHE 305.A N LEU 301.A O no hydrogen 2.854 N/A SER 306.A N GLN 302.A O no hydrogen 3.470 N/A SER 306.A OG ASN 192.A OD1 no hydrogen 3.244 N/A TYR 307.A N ASN 192.A O no hydrogen 2.943 N/A SER 308.A N SER 306.A OG no hydrogen 2.743 N/A ASP 309.A N SER 306.A O no hydrogen 3.088 N/A ARG 310.A N TYR 292.A OH no hydrogen 3.010 N/A ARG 310.A NE ASN 287.A O no hydrogen 2.700 N/A ARG 310.A NH2 ASN 287.A O no hydrogen 3.365 N/A ARG 312.A N ASP 309.A O no hydrogen 3.069 N/A ARG 312.A NH1 SER 308.A O no hydrogen 3.009 N/A ARG 312.A NH1 ASP 309.A OD2 no hydrogen 2.896 N/A ARG 312.A NH2 TYR 313.A OH no hydrogen 3.432 N/A TYR 313.A N ARG 310.A O no hydrogen 2.970 N/A TYR 314.A N ILE 311.A O no hydrogen 2.996 N/A TYR 314.A OH GLU 284.A O no hydrogen 2.784 N/A HIS 317.A N TYR 314.A O no hydrogen 2.962 N/A LYS 319.A N HIS 317.A ND1 no hydrogen 2.766 N/A ALA 320.A N HIS 317.A O no hydrogen 2.910 N/A ALA 321.A N HIS 317.A O no hydrogen 2.935 N/A VAL 324.A N ALA 320.A O no hydrogen 3.169 N/A ASP 325.A N ALA 321.A O no hydrogen 3.376 N/A GLU 326.A N ALA 322.A O no hydrogen 2.910 N/A LEU 327.A N ALA 323.A O no hydrogen 2.919 N/A SER 328.A OG ASP 325.A O no hydrogen 3.083 N/A SER 328.A OG GLU 326.A O no hydrogen 3.416 N/A LEU 329.A N GLU 326.A O no hydrogen 2.961 N/A ASP 331.A N SER 328.A O no hydrogen 3.399 N/A VAL 333.A N LEU 330.A O no hydrogen 3.045 N/A ILE 335.A N PRO 358.A O no hydrogen 2.985 N/A LEU 339.A N PRO 336.A O no hydrogen 3.029 N/A ILE 340.A N PRO 336.A O no hydrogen 3.252 N/A SER 341.A N GLU 337.A O no hydrogen 2.649 N/A GLN 342.A N LEU 339.A O no hydrogen 3.228 N/A GLN 342.A NE2 GLN 342.A O no hydrogen 3.112 N/A PHE 343.A N LEU 339.A O no hydrogen 2.951 N/A PHE 343.A N ILE 340.A O no hydrogen 3.294 N/A LEU 344.A N ILE 340.A O no hydrogen 2.831 N/A SER 347.A N LEU 344.A O no hydrogen 2.927 N/A TYR 348.A N ALA 345.A O no hydrogen 3.122 N/A ARG 350.A NH1 ALA 366.A O no hydrogen 2.803 N/A ARG 350.A NH2 GLY 346.A O no hydrogen 2.807 N/A VAL 351.A N SER 347.A O no hydrogen 2.756 N/A ARG 352.A N TYR 348.A O no hydrogen 2.887 N/A ARG 352.A NH1 TYR 348.A OH no hydrogen 3.102 N/A ASN 353.A N ALA 349.A O no hydrogen 3.056 N/A GLY 354.A N VAL 351.A O no hydrogen 3.421 N/A VAL 356.A N ARG 350.A O no hydrogen 3.364 N/A GLN 359.A N ALA 357.A O no hydrogen 2.859 N/A LYS 361.A NZ GLU 15.A OE1 no hydrogen 3.181 N/A LYS 361.A NZ GLU 15.A OE2 no hydrogen 2.767 N/A LEU 363.A N GLN 359.A O no hydrogen 2.938 N/A ALA 364.A N ALA 360.A O no hydrogen 2.949 N/A LEU 365.A N LYS 361.A O no hydrogen 2.885 N/A ALA 366.A N PRO 362.A O no hydrogen 2.878 N/A ALA 367.A N LEU 363.A O no hydrogen 3.116 N/A VAL 368.A N ALA 364.A O no hydrogen 3.248 N/A ASP 369.A N LEU 365.A O no hydrogen 2.761 N/A ALA 370.A N ALA 366.A O no hydrogen 3.210 N/A ALA 370.A N ALA 367.A O no hydrogen 3.124 N/A VAL 371.A N VAL 368.A O no hydrogen 2.900 N/A LEU 372.A N VAL 368.A O no hydrogen 3.073 N/A GLN 373.A N ASP 369.A O no hydrogen 2.717 N/A ASP 374.A N VAL 371.A O no hydrogen 2.977 N/A TYR 375.A N LEU 372.A O no hydrogen 3.040 N/A TYR 375.A OH THR 222.A O no hydrogen 2.947 N/A TYR 375.A OH THR 222.A OG1 no hydrogen 3.290 N/A PHE 376.A N LEU 372.A O no hydrogen 3.197 N/A ALA 377.A N GLN 373.A O no hydrogen 2.922 N/A ALA 378.A N ASP 374.A O no hydrogen 3.225 N/A ALA 378.A N TYR 375.A O no hydrogen 3.188 N/A CYS 379.A N PHE 376.A O no hydrogen 2.769 N/A CYS 379.A SG TYR 375.A O no hydrogen 3.476 N/A