HEADER SPLICING 31-DEC-69 6FF7 TITLE human Bact spliceosome core structure COMPND MOL_ID: 49; COMPND 2 MOLECULE: U5 small nuclear ribonucleoprotein 200 kDa helicase; COMPND 3 CHAIN: r; COMPND 4 EC: 3.6.4.13; EXPDTA ELECTRON MICROSCOPY DBREF 6FF7 r 1 2136 UNP O75643 U520_HUMAN 1 2136 SEQRES 1 r 55 MET CYS PRO LEU ARG GLN PHE ARG LYS LEU PRO GLU GLU SEQRES 2 r 55 VAL VAL LYS LYS ILE GLU LYS LYS ASN PHE PRO PHE GLU SEQRES 3 r 55 ARG LEU TYR ASP LEU ASN HIS ASN GLU ILE GLY GLU LEU SEQRES 4 r 55 ILE ARG MET PRO LYS MET GLY LYS THR ILE HIS LYS TYR SEQRES 5 r 55 VAL HIS LEU ATOM 1 N MET r1126 189.691 295.818 293.739 1.00146.09 ATOM 2 CA MET r1126 189.632 294.421 293.368 1.00145.54 ATOM 3 C MET r1126 188.270 294.011 292.806 1.00141.71 ATOM 4 O MET r1126 187.220 294.519 293.214 1.00138.71 ATOM 5 CB MET r1126 190.054 293.554 294.548 1.00160.55 ATOM 6 N CYS r1127 188.321 293.084 291.851 1.00150.64 ATOM 7 CA CYS r1127 187.165 292.634 291.085 1.00147.73 ATOM 8 C CYS r1127 186.003 292.178 291.946 1.00143.74 ATOM 9 O CYS r1127 186.153 291.276 292.764 1.00143.68 ATOM 10 CB CYS r1127 187.569 291.492 290.145 1.00155.30 ATOM 11 N PRO r1128 184.827 292.781 291.722 1.00145.01 ATOM 12 CA PRO r1128 183.586 292.529 292.458 1.00141.75 ATOM 13 C PRO r1128 183.215 291.054 292.474 1.00140.90 ATOM 14 O PRO r1128 182.523 290.603 293.389 1.00139.47 ATOM 15 CB PRO r1128 182.538 293.289 291.639 1.00144.35 ATOM 16 N LEU r1129 183.677 290.319 291.465 1.00127.91 ATOM 17 CA LEU r1129 183.428 288.889 291.354 1.00128.59 ATOM 18 C LEU r1129 183.944 288.151 292.587 1.00130.36 ATOM 19 O LEU r1129 183.508 287.041 292.886 1.00131.30 ATOM 20 CB LEU r1129 184.092 288.332 290.092 1.00129.09 ATOM 21 N ARG r1130 184.870 288.772 293.309 1.00149.00 ATOM 22 CA ARG r1130 185.394 288.188 294.535 1.00150.34 ATOM 23 C ARG r1130 184.361 288.058 295.652 1.00148.10 ATOM 24 O ARG r1130 184.508 287.211 296.521 1.00149.12 ATOM 25 CB ARG r1130 186.601 288.973 295.041 1.00166.31 ATOM 26 N GLN r1131 183.325 288.883 295.648 1.00131.97 ATOM 27 CA GLN r1131 182.332 288.792 296.716 1.00132.53 ATOM 28 C GLN r1131 181.493 287.530 296.571 1.00133.04 ATOM 29 O GLN r1131 180.764 287.149 297.493 1.00134.28 ATOM 30 CB GLN r1131 181.431 290.020 296.732 1.00130.91 ATOM 31 N PHE r1132 181.596 286.898 295.405 1.00144.48 ATOM 32 CA PHE r1132 181.062 285.559 295.207 1.00145.06 ATOM 33 C PHE r1132 182.220 284.644 295.533 1.00147.54 ATOM 34 O PHE r1132 183.129 284.482 294.719 1.00149.20 ATOM 35 CB PHE r1132 180.768 285.309 293.728 1.00146.74 ATOM 36 N ARG r1133 182.173 283.977 296.674 1.00166.94 ATOM 37 CA ARG r1133 183.323 283.198 297.089 1.00169.69 ATOM 38 C ARG r1133 183.386 281.915 296.271 1.00171.21 ATOM 39 O ARG r1133 184.363 281.166 296.321 1.00173.96 ATOM 40 CB ARG r1133 183.266 282.907 298.590 1.00171.93 ATOM 41 N LYS r1134 182.337 281.690 295.488 1.00169.70 ATOM 42 CA LYS r1134 182.184 280.469 294.711 1.00171.21 ATOM 43 C LYS r1134 183.262 280.389 293.620 1.00173.34 ATOM 44 O LYS r1134 183.518 279.323 293.054 1.00175.58 ATOM 45 CB LYS r1134 180.767 280.431 294.111 1.00181.88 ATOM 46 N LEU r1135 183.908 281.524 293.358 1.00160.34 ATOM 47 CA LEU r1135 184.839 281.652 292.240 1.00162.79 ATOM 48 C LEU r1135 186.275 281.246 292.586 1.00166.50 ATOM 49 O LEU r1135 186.748 281.486 293.701 1.00166.76 ATOM 50 CB LEU r1135 184.812 283.088 291.702 1.00163.43 ATOM 51 N PRO r1136 186.962 280.597 291.628 1.00160.13 ATOM 52 CA PRO r1136 188.395 280.285 291.662 1.00164.76 ATOM 53 C PRO r1136 189.266 281.528 291.765 1.00165.99 ATOM 54 O PRO r1136 188.980 282.519 291.097 1.00164.50 ATOM 55 CB PRO r1136 188.631 279.625 290.306 1.00166.57 ATOM 56 N GLU r1137 190.324 281.466 292.566 1.00207.54 ATOM 57 CA GLU r1137 191.199 282.618 292.776 1.00209.23 ATOM 58 C GLU r1137 192.030 282.989 291.551 1.00213.36 ATOM 59 O GLU r1137 192.223 284.176 291.257 1.00213.06 ATOM 60 CB GLU r1137 192.146 282.371 293.957 1.00217.31 ATOM 61 N GLU r1138 192.539 281.980 290.852 1.00203.52 ATOM 62 CA GLU r1138 193.426 282.237 289.724 1.00208.61 ATOM 63 C GLU r1138 192.670 282.906 288.583 1.00206.40 ATOM 64 O GLU r1138 193.230 283.727 287.859 1.00208.53 ATOM 65 CB GLU r1138 194.131 280.956 289.248 1.00224.84 ATOM 66 N VAL r1139 191.391 282.567 288.445 1.00175.88 ATOM 67 CA VAL r1139 190.559 283.155 287.402 1.00173.68 ATOM 68 C VAL r1139 190.329 284.628 287.693 1.00169.84 ATOM 69 O VAL r1139 190.491 285.479 286.815 1.00170.09 ATOM 70 CB VAL r1139 189.207 282.427 287.274 1.00180.69 ATOM 71 N VAL r1140 189.960 284.926 288.935 1.00157.94 ATOM 72 CA VAL r1140 189.791 286.302 289.378 1.00154.96 ATOM 73 C VAL r1140 191.063 287.123 289.138 1.00158.77 ATOM 74 O VAL r1140 191.021 288.175 288.487 1.00158.25 ATOM 75 CB VAL r1140 189.409 286.355 290.872 1.00149.93 ATOM 76 N LYS r1141 192.190 286.625 289.640 1.00189.24 ATOM 77 CA LYS r1141 193.473 287.296 289.445 1.00193.74 ATOM 78 C LYS r1141 193.766 287.501 287.954 1.00196.53 ATOM 79 O LYS r1141 194.354 288.512 287.558 1.00198.61 ATOM 80 CB LYS r1141 194.607 286.514 290.112 1.00206.45 ATOM 81 N LYS r1142 193.329 286.544 287.139 1.00195.99 ATOM 82 CA LYS r1142 193.531 286.589 285.690 1.00198.69 ATOM 83 C LYS r1142 192.724 287.711 285.042 1.00195.32 ATOM 84 O LYS r1142 193.231 288.415 284.166 1.00198.39 ATOM 85 CB LYS r1142 193.154 285.247 285.051 1.00217.90 ATOM 86 N ILE r1143 191.471 287.874 285.455 1.00169.99 ATOM 87 CA ILE r1143 190.663 288.964 284.917 1.00167.32 ATOM 88 C ILE r1143 191.143 290.314 285.454 1.00167.85 ATOM 89 O ILE r1143 190.900 291.353 284.842 1.00168.12 ATOM 90 CB ILE r1143 189.124 288.778 285.143 1.00152.94 ATOM 91 N GLU r1144 191.817 290.301 286.605 1.00169.21 ATOM 92 CA GLU r1144 192.391 291.531 287.149 1.00170.43 ATOM 93 C GLU r1144 193.664 291.913 286.391 1.00176.75 ATOM 94 O GLU r1144 194.008 293.095 286.291 1.00178.62 ATOM 95 CB GLU r1144 192.694 291.374 288.638 1.00177.96 ATOM 96 N LYS r1145 194.350 290.901 285.864 1.00209.51 ATOM 97 CA LYS r1145 195.584 291.086 285.092 1.00216.30 ATOM 98 C LYS r1145 195.375 292.038 283.912 1.00217.93 ATOM 99 O LYS r1145 196.025 293.082 283.825 1.00221.54 ATOM 100 CB LYS r1145 196.094 289.717 284.609 1.00217.53 ATOM 101 N LYS r1146 194.457 291.678 283.019 1.00203.52 ATOM 102 CA LYS r1146 194.041 292.569 281.945 1.00204.83 ATOM 103 C LYS r1146 193.037 293.539 282.535 1.00200.10 ATOM 104 O LYS r1146 192.143 293.131 283.268 1.00194.56 ATOM 105 CB LYS r1146 193.368 291.779 280.821 1.00205.80 ATOM 106 N ASN r1147 193.159 294.825 282.222 1.00207.90 ATOM 107 CA ASN r1147 192.190 295.770 282.753 1.00204.06 ATOM 108 C ASN r1147 191.031 295.949 281.776 1.00202.81 ATOM 109 O ASN r1147 191.165 296.575 280.725 1.00207.34 ATOM 110 CB ASN r1147 192.861 297.108 283.078 1.00201.92 ATOM 111 N PHE r1148 189.891 295.383 282.155 1.00207.52 ATOM 112 CA PHE r1148 188.677 295.393 281.340 1.00205.57 ATOM 113 C PHE r1148 187.481 295.726 282.222 1.00199.80 ATOM 114 O PHE r1148 186.912 294.828 282.842 1.00195.40 ATOM 115 CB PHE r1148 188.460 294.051 280.641 1.00216.44 ATOM 116 N PRO r1149 187.102 297.013 282.280 1.00165.12 ATOM 117 CA PRO r1149 186.158 297.537 283.273 1.00159.88 ATOM 118 C PRO r1149 184.907 296.668 283.418 1.00154.30 ATOM 119 O PRO r1149 184.315 296.238 282.426 1.00154.11 ATOM 120 CB PRO r1149 185.799 298.928 282.725 1.00157.72 ATOM 121 N PHE r1150 184.540 296.413 284.671 1.00178.90 ATOM 122 CA PHE r1150 183.582 295.368 285.037 1.00174.66 ATOM 123 C PHE r1150 182.215 295.490 284.370 1.00172.29 ATOM 124 O PHE r1150 181.654 294.492 283.909 1.00171.28 ATOM 125 CB PHE r1150 183.443 295.305 286.566 1.00171.46 ATOM 126 N GLU r1151 181.685 296.705 284.310 1.00179.93 ATOM 127 CA GLU r1151 180.375 296.931 283.713 1.00178.21 ATOM 128 C GLU r1151 180.381 296.637 282.214 1.00180.76 ATOM 129 O GLU r1151 179.338 296.687 281.560 1.00180.00 ATOM 130 CB GLU r1151 179.866 298.349 283.997 1.00192.87 ATOM 131 N ARG r1152 181.560 296.351 281.668 1.00173.28 ATOM 132 CA ARG r1152 181.675 295.986 280.260 1.00176.39 ATOM 133 C ARG r1152 181.562 294.470 280.056 1.00175.84 ATOM 134 O ARG r1152 181.730 293.971 278.947 1.00178.66 ATOM 135 CB ARG r1152 182.975 296.535 279.657 1.00194.71 ATOM 136 N LEU r1153 181.283 293.741 281.133 1.00147.78 ATOM 137 CA LEU r1153 181.071 292.300 281.025 1.00147.35 ATOM 138 C LEU r1153 179.643 291.940 280.588 1.00145.41 ATOM 139 O LEU r1153 179.395 290.835 280.116 1.00145.97 ATOM 140 CB LEU r1153 181.441 291.583 282.338 1.00138.81 ATOM 141 N TYR r1154 178.701 292.871 280.733 1.00166.14 ATOM 142 CA TYR r1154 177.310 292.575 280.388 1.00164.98 ATOM 143 C TYR r1154 177.098 292.496 278.881 1.00167.58 ATOM 144 O TYR r1154 176.196 291.800 278.403 1.00167.63 ATOM 145 CB TYR r1154 176.357 293.599 281.003 1.00164.51 ATOM 146 N ASP r1155 177.932 293.203 278.128 1.00199.48 ATOM 147 CA ASP r1155 177.792 293.241 276.676 1.00202.54 ATOM 148 C ASP r1155 178.171 291.897 276.050 1.00204.50 ATOM 149 O ASP r1155 177.688 291.533 274.970 1.00206.43 ATOM 150 CB ASP r1155 178.664 294.362 276.103 1.00195.21 ATOM 151 N LEU r1156 179.024 291.160 276.759 1.00183.40 ATOM 152 CA LEU r1156 179.626 289.936 276.237 1.00185.80 ATOM 153 C LEU r1156 178.813 288.684 276.559 1.00183.92 ATOM 154 O LEU r1156 178.270 288.548 277.658 1.00180.81 ATOM 155 CB LEU r1156 181.047 289.791 276.793 1.00183.77 ATOM 156 N ASN r1157 178.728 287.774 275.590 1.00206.90 ATOM 157 CA ASN r1157 178.081 286.482 275.808 1.00206.01 ATOM 158 C ASN r1157 179.036 285.495 276.465 1.00206.52 ATOM 159 O ASN r1157 180.156 285.863 276.827 1.00207.44 ATOM 160 CB ASN r1157 177.515 285.910 274.503 1.00206.13 ATOM 161 N HIS r1158 178.602 284.247 276.603 1.00197.36 ATOM 162 CA HIS r1158 179.369 283.261 277.361 1.00197.73 ATOM 163 C HIS r1158 180.745 282.999 276.741 1.00201.42 ATOM 164 O HIS r1158 181.715 282.713 277.445 1.00202.05 ATOM 165 CB HIS r1158 178.578 281.953 277.505 1.00202.66 ATOM 166 N ASN r1159 180.816 283.107 275.419 1.00188.39 ATOM 167 CA ASN r1159 182.057 282.860 274.693 1.00192.68 ATOM 168 C ASN r1159 183.000 284.062 274.733 1.00193.93 ATOM 169 O ASN r1159 184.207 283.914 274.959 1.00196.43 ATOM 170 CB ASN r1159 181.737 282.470 273.245 1.00212.90 ATOM 171 N GLU r1160 182.433 285.246 274.526 1.00194.06 ATOM 172 CA GLU r1160 183.203 286.487 274.467 1.00195.67 ATOM 173 C GLU r1160 183.904 286.773 275.787 1.00194.02 ATOM 174 O GLU r1160 184.938 287.440 275.820 1.00196.62 ATOM 175 CB GLU r1160 182.305 287.663 274.069 1.00190.74 ATOM 176 N ILE r1161 183.332 286.269 276.872 1.00180.66 ATOM 177 CA ILE r1161 183.922 286.427 278.191 1.00179.07 ATOM 178 C ILE r1161 185.230 285.657 278.310 1.00182.49 ATOM 179 O ILE r1161 186.263 286.215 278.698 1.00184.30 ATOM 180 CB ILE r1161 182.979 285.913 279.277 1.00162.37 ATOM 181 N GLY r1162 185.177 284.371 277.973 1.00215.31 ATOM 182 CA GLY r1162 186.329 283.499 278.112 1.00218.79 ATOM 183 C GLY r1162 187.477 283.895 277.206 1.00223.93 ATOM 184 O GLY r1162 188.631 283.543 277.464 1.00227.27 ATOM 185 N GLU r1163 187.158 284.638 276.150 1.00187.09 ATOM 186 CA GLU r1163 188.152 285.055 275.167 1.00192.63 ATOM 187 C GLU r1163 189.099 286.141 275.677 1.00194.39 ATOM 188 O GLU r1163 190.180 286.333 275.124 1.00199.78 ATOM 189 CB GLU r1163 187.468 285.505 273.878 1.00201.70 ATOM 190 N LEU r1164 188.691 286.844 276.725 1.00187.60 ATOM 191 CA LEU r1164 189.518 287.901 277.293 1.00189.10 ATOM 192 C LEU r1164 190.717 287.333 278.034 1.00191.55 ATOM 193 O LEU r1164 191.856 287.743 277.807 1.00196.53 ATOM 194 CB LEU r1164 188.703 288.754 278.258 1.00189.40 ATOM 195 N ILE r1165 190.448 286.390 278.924 1.00220.68 ATOM 196 CA ILE r1165 191.477 285.791 279.768 1.00222.93 ATOM 197 C ILE r1165 192.060 284.510 279.160 1.00227.13 ATOM 198 O ILE r1165 192.846 283.811 279.803 1.00229.50 ATOM 199 CB ILE r1165 190.956 285.518 281.200 1.00194.72 ATOM 200 N ARG r1166 191.638 284.210 277.929 1.00233.92 ATOM 201 CA ARG r1166 192.009 282.992 277.193 1.00237.79 ATOM 202 C ARG r1166 191.778 281.697 277.982 1.00236.15 ATOM 203 O ARG r1166 192.455 280.688 277.774 1.00240.24 ATOM 204 CB ARG r1166 193.420 283.071 276.569 1.00246.55 ATOM 205 N MET r1167 190.785 281.734 278.865 1.00197.64 ATOM 206 CA MET r1167 190.361 280.561 279.617 1.00195.88 ATOM 207 C MET r1167 188.895 280.284 279.299 1.00191.62 ATOM 208 O MET r1167 188.019 280.562 280.118 1.00187.07 ATOM 209 CB MET r1167 190.550 280.789 281.117 1.00221.94 ATOM 210 N PRO r1168 188.628 279.734 278.103 1.00184.63 ATOM 211 CA PRO r1168 187.265 279.577 277.582 1.00181.51 ATOM 212 C PRO r1168 186.438 278.546 278.347 1.00178.82 ATOM 213 O PRO r1168 185.211 278.631 278.351 1.00175.39 ATOM 214 CB PRO r1168 187.494 279.117 276.140 1.00192.12 ATOM 215 N LYS r1169 187.103 277.590 278.990 1.00186.92 ATOM 216 CA LYS r1169 186.403 276.564 279.760 1.00185.00 ATOM 217 C LYS r1169 185.607 277.209 280.902 1.00180.16 ATOM 218 O LYS r1169 184.598 276.673 281.356 1.00177.68 ATOM 219 CB LYS r1169 187.398 275.526 280.296 1.00186.32 ATOM 220 N MET r1170 186.065 278.372 281.343 1.00197.18 ATOM 221 CA MET r1170 185.409 279.107 282.415 1.00192.97 ATOM 222 C MET r1170 184.250 279.967 281.921 1.00189.75 ATOM 223 O MET r1170 183.405 280.410 282.712 1.00186.32 ATOM 224 CB MET r1170 186.434 279.989 283.122 1.00197.92 ATOM 225 N GLY r1171 184.200 280.167 280.605 1.00195.97 ATOM 226 CA GLY r1171 183.326 281.145 279.982 1.00193.90 ATOM 227 C GLY r1171 181.877 281.156 280.430 1.00190.21 ATOM 228 O GLY r1171 181.283 282.222 280.599 1.00187.79 ATOM 229 N LYS r1172 181.303 279.973 280.624 1.00174.68 ATOM 230 CA LYS r1172 179.923 279.869 281.081 1.00171.90 ATOM 231 C LYS r1172 179.792 280.328 282.532 1.00169.16 ATOM 232 O LYS r1172 178.983 281.209 282.846 1.00166.70 ATOM 233 CB LYS r1172 179.422 278.432 280.943 1.00174.92 ATOM 234 N THR r1173 180.612 279.744 283.407 1.00174.63 ATOM 235 CA THR r1173 180.497 279.964 284.849 1.00172.47 ATOM 236 C THR r1173 180.661 281.430 285.229 1.00170.67 ATOM 237 O THR r1173 179.843 281.977 285.981 1.00168.04 ATOM 238 CB THR r1173 181.501 279.110 285.649 1.00168.30 ATOM 239 N ILE r1174 181.704 282.060 284.687 1.00157.71 ATOM 240 CA ILE r1174 181.914 283.490 284.869 1.00156.41 ATOM 241 C ILE r1174 180.624 284.229 284.564 1.00153.94 ATOM 242 O ILE r1174 180.140 285.016 285.384 1.00151.54 ATOM 243 CB ILE r1174 183.003 284.049 283.931 1.00152.16 ATOM 244 N HIS r1175 180.049 283.920 283.404 1.00154.02 ATOM 245 CA HIS r1175 178.848 284.597 282.950 1.00152.30 ATOM 246 C HIS r1175 177.768 284.544 284.016 1.00149.86 ATOM 247 O HIS r1175 177.149 285.568 284.315 1.00148.04 ATOM 248 CB HIS r1175 178.346 283.996 281.644 1.00157.61 ATOM 249 N LYS r1176 177.588 283.371 284.623 1.00162.01 ATOM 250 CA LYS r1176 176.565 283.200 285.651 1.00160.20 ATOM 251 C LYS r1176 176.746 284.278 286.705 1.00158.15 ATOM 252 O LYS r1176 175.833 285.075 286.962 1.00156.65 ATOM 253 CB LYS r1176 176.671 281.822 286.305 1.00174.32 ATOM 254 N TYR r1177 177.955 284.351 287.257 1.00165.81 ATOM 255 CA TYR r1177 178.252 285.331 288.295 1.00164.18 ATOM 256 C TYR r1177 178.031 286.761 287.841 1.00163.17 ATOM 257 O TYR r1177 177.521 287.576 288.609 1.00161.39 ATOM 258 CB TYR r1177 179.683 285.192 288.802 1.00165.76 ATOM 259 N VAL r1178 178.396 287.067 286.596 1.00127.70 ATOM 260 CA VAL r1178 178.297 288.443 286.150 1.00126.88 ATOM 261 C VAL r1178 176.835 288.849 286.171 1.00126.87 ATOM 262 O VAL r1178 176.506 290.001 286.457 1.00126.30 ATOM 263 CB VAL r1178 178.929 288.669 284.769 1.00127.49 ATOM 264 N HIS r1179 175.951 287.888 285.920 1.00135.81 ATOM 265 CA HIS r1179 174.529 288.202 285.919 1.00135.28 ATOM 266 C HIS r1179 173.881 287.955 287.276 1.00134.44 ATOM 267 O HIS r1179 172.717 288.288 287.490 1.00134.48 ATOM 268 CB HIS r1179 173.802 287.477 284.789 1.00137.21 ATOM 269 N LEU r1180 174.643 287.366 288.189 1.00135.66 ATOM 270 CA LEU r1180 174.206 287.215 289.573 1.00134.48 ATOM 271 C LEU r1180 174.452 288.491 290.363 1.00133.25 ATOM 272 O LEU r1180 173.796 288.754 291.371 1.00132.45 ATOM 273 CB LEU r1180 174.927 286.053 290.243 1.00138.48 TER