HEADER SPLICING 31-DEC-69 8CH6 TITLE Structure of a late-stage activated spliceosome (BAqr) arrested with TITLE 2 a dominant-negative Aquarius mutant (state B complex). COMPND MOL_ID: 34; COMPND 2 MOLECULE: U5 small nuclear ribonucleoprotein 200 kDa helicase; COMPND 3 CHAIN: c; COMPND 4 EC: 3.6.4.13; EXPDTA ELECTRON MICROSCOPY DBREF 8CH6 c 1 2136 UNP O75643 U520_HUMAN 1 2136 SEQRES 1 c 55 MET CYS PRO LEU ARG GLN PHE ARG LYS LEU PRO GLU GLU SEQRES 2 c 55 VAL VAL LYS LYS ILE GLU LYS LYS ASN PHE PRO PHE GLU SEQRES 3 c 55 ARG LEU TYR ASP LEU ASN HIS ASN GLU ILE GLY GLU LEU SEQRES 4 c 55 ILE ARG MET PRO LYS MET GLY LYS THR ILE HIS LYS TYR SEQRES 5 c 55 VAL HIS LEU ATOM 1 N MET c1126 203.651 320.946 307.260 1.00594.30 ATOM 2 CA MET c1126 203.375 319.569 306.881 1.00594.30 ATOM 3 C MET c1126 202.152 319.498 305.973 1.00594.30 ATOM 4 O MET c1126 201.215 320.293 306.089 1.00594.30 ATOM 5 CB MET c1126 203.156 318.706 308.124 1.00594.30 ATOM 6 N CYS c1127 202.172 318.533 305.060 1.00594.29 ATOM 7 CA CYS c1127 201.105 318.368 304.088 1.00594.29 ATOM 8 C CYS c1127 199.860 317.771 304.736 1.00594.29 ATOM 9 O CYS c1127 199.929 317.185 305.820 1.00594.29 ATOM 10 CB CYS c1127 201.574 317.478 302.942 1.00594.29 ATOM 11 N PRO c1128 198.698 317.919 304.090 1.00594.28 ATOM 12 CA PRO c1128 197.476 317.302 304.630 1.00594.28 ATOM 13 C PRO c1128 197.439 315.791 304.479 1.00594.28 ATOM 14 O PRO c1128 196.659 315.135 305.181 1.00594.28 ATOM 15 CB PRO c1128 196.356 317.970 303.821 1.00594.28 ATOM 16 N LEU c1129 198.252 315.219 303.587 1.00594.27 ATOM 17 CA LEU c1129 198.339 313.768 303.471 1.00594.27 ATOM 18 C LEU c1129 199.114 313.142 304.622 1.00594.27 ATOM 19 O LEU c1129 198.981 311.936 304.855 1.00594.27 ATOM 20 CB LEU c1129 198.984 313.385 302.138 1.00594.27 ATOM 21 N ARG c1130 199.923 313.928 305.339 1.00594.26 ATOM 22 CA ARG c1130 200.645 313.416 306.498 1.00594.26 ATOM 23 C ARG c1130 199.723 313.128 307.676 1.00594.26 ATOM 24 O ARG c1130 200.057 312.287 308.517 1.00594.26 ATOM 25 CB ARG c1130 201.732 314.407 306.919 1.00594.26 ATOM 26 N GLN c1131 198.576 313.808 307.757 1.00594.23 ATOM 27 CA GLN c1131 197.607 313.500 308.803 1.00594.23 ATOM 28 C GLN c1131 196.861 312.204 308.513 1.00594.23 ATOM 29 O GLN c1131 196.360 311.559 309.441 1.00594.23 ATOM 30 CB GLN c1131 196.622 314.658 308.963 1.00594.23 ATOM 31 N PHE c1132 196.776 311.810 307.245 1.00594.23 ATOM 32 CA PHE c1132 196.105 310.577 306.857 1.00594.23 ATOM 33 C PHE c1132 197.093 309.418 306.859 1.00594.23 ATOM 34 O PHE c1132 198.246 309.566 306.446 1.00594.23 ATOM 35 CB PHE c1132 195.470 310.722 305.473 1.00594.23 ATOM 36 N ARG c1133 196.630 308.260 307.330 1.00594.25 ATOM 37 CA ARG c1133 197.488 307.088 307.447 1.00594.25 ATOM 38 C ARG c1133 197.637 306.316 306.142 1.00594.25 ATOM 39 O ARG c1133 198.516 305.452 306.053 1.00594.25 ATOM 40 CB ARG c1133 196.951 306.152 308.533 1.00594.25 ATOM 41 N LYS c1134 196.806 306.598 305.136 1.00594.23 ATOM 42 CA LYS c1134 196.898 305.880 303.870 1.00594.23 ATOM 43 C LYS c1134 198.086 306.336 303.033 1.00594.23 ATOM 44 O LYS c1134 198.602 305.557 302.224 1.00594.23 ATOM 45 CB LYS c1134 195.602 306.049 303.075 1.00594.23 ATOM 46 N LEU c1135 198.526 307.580 303.206 1.00594.25 ATOM 47 CA LEU c1135 199.630 308.119 302.430 1.00594.25 ATOM 48 C LEU c1135 200.967 307.570 302.922 1.00594.25 ATOM 49 O LEU c1135 201.103 307.197 304.090 1.00594.25 ATOM 50 CB LEU c1135 199.647 309.641 302.515 1.00594.25 ATOM 51 N PRO c1136 201.965 307.509 302.047 1.00594.28 ATOM 52 CA PRO c1136 203.311 307.135 302.487 1.00594.28 ATOM 53 C PRO c1136 204.059 308.332 303.056 1.00594.28 ATOM 54 O PRO c1136 203.864 309.478 302.645 1.00594.28 ATOM 55 CB PRO c1136 203.977 306.626 301.203 1.00594.28 ATOM 56 N GLU c1137 204.930 308.035 304.027 1.00594.27 ATOM 57 CA GLU c1137 205.690 309.084 304.702 1.00594.27 ATOM 58 C GLU c1137 206.740 309.695 303.782 1.00594.27 ATOM 59 O GLU c1137 206.943 310.915 303.791 1.00594.27 ATOM 60 CB GLU c1137 206.345 308.525 305.966 1.00594.27 ATOM 61 N GLU c1138 207.399 308.863 302.968 1.00594.29 ATOM 62 CA GLU c1138 208.384 309.367 302.014 1.00594.29 ATOM 63 C GLU c1138 207.721 310.165 300.898 1.00594.29 ATOM 64 O GLU c1138 208.274 311.170 300.436 1.00594.29 ATOM 65 CB GLU c1138 209.194 308.206 301.436 1.00594.29 ATOM 66 N VAL c1139 206.522 309.749 300.477 1.00594.29 ATOM 67 CA VAL c1139 205.777 310.486 299.459 1.00594.29 ATOM 68 C VAL c1139 205.285 311.821 300.008 1.00594.29 ATOM 69 O VAL c1139 205.292 312.836 299.300 1.00594.29 ATOM 70 CB VAL c1139 204.613 309.630 298.927 1.00594.29 ATOM 71 N VAL c1140 204.872 311.846 301.280 1.00594.31 ATOM 72 CA VAL c1140 204.432 313.089 301.911 1.00594.31 ATOM 73 C VAL c1140 205.608 314.040 302.117 1.00594.31 ATOM 74 O VAL c1140 205.472 315.259 301.947 1.00594.31 ATOM 75 CB VAL c1140 203.710 312.788 303.236 1.00594.31 ATOM 76 N LYS c1141 206.781 313.498 302.467 1.00594.29 ATOM 77 CA LYS c1141 207.978 314.324 302.612 1.00594.29 ATOM 78 C LYS c1141 208.455 314.862 301.266 1.00594.29 ATOM 79 O LYS c1141 208.917 316.006 301.182 1.00594.29 ATOM 80 CB LYS c1141 209.087 313.522 303.293 1.00594.29 ATOM 81 N LYS c1142 208.339 314.058 300.203 1.00594.30 ATOM 82 CA LYS c1142 208.688 314.528 298.865 1.00594.30 ATOM 83 C LYS c1142 207.692 315.559 298.347 1.00594.30 ATOM 84 O LYS c1142 208.067 316.438 297.564 1.00594.30 ATOM 85 CB LYS c1142 208.776 313.346 297.900 1.00594.30 ATOM 86 N ILE c1143 206.424 315.457 298.754 1.00594.29 ATOM 87 CA ILE c1143 205.443 316.479 298.400 1.00594.29 ATOM 88 C ILE c1143 205.715 317.773 299.159 1.00594.29 ATOM 89 O ILE c1143 205.570 318.872 298.610 1.00594.29 ATOM 90 CB ILE c1143 204.017 315.960 298.657 1.00594.29 ATOM 91 N GLU c1144 206.104 317.667 300.433 1.00594.28 ATOM 92 CA GLU c1144 206.327 318.856 301.249 1.00594.28 ATOM 93 C GLU c1144 207.626 319.578 300.904 1.00594.28 ATOM 94 O GLU c1144 207.657 320.813 300.909 1.00594.28 ATOM 95 CB GLU c1144 206.324 318.479 302.732 1.00594.28 ATOM 96 N LYS c1145 208.700 318.840 300.609 1.00594.28 ATOM 97 CA LYS c1145 209.999 319.470 300.394 1.00594.28 ATOM 98 C LYS c1145 210.110 320.116 299.016 1.00594.28 ATOM 99 O LYS c1145 210.796 321.132 298.863 1.00594.28 ATOM 100 CB LYS c1145 211.115 318.442 300.587 1.00594.28 ATOM 101 N LYS c1146 209.457 319.542 298.009 1.00594.28 ATOM 102 CA LYS c1146 209.577 320.032 296.644 1.00594.28 ATOM 103 C LYS c1146 208.784 321.322 296.451 1.00594.28 ATOM 104 O LYS c1146 207.873 321.647 297.217 1.00594.28 ATOM 105 CB LYS c1146 209.102 318.976 295.646 1.00594.28 ATOM 106 N ASN c1147 209.147 322.061 295.402 1.00594.25 ATOM 107 CA ASN c1147 208.498 323.334 295.080 1.00594.25 ATOM 108 C ASN c1147 207.316 323.090 294.140 1.00594.25 ATOM 109 O ASN c1147 207.286 323.518 292.985 1.00594.25 ATOM 110 CB ASN c1147 209.505 324.305 294.478 1.00594.25 ATOM 111 N PHE c1148 206.324 322.379 294.669 1.00594.25 ATOM 112 CA PHE c1148 205.098 322.072 293.951 1.00594.25 ATOM 113 C PHE c1148 203.948 322.107 294.943 1.00594.25 ATOM 114 O PHE c1148 204.173 321.957 296.151 1.00594.25 ATOM 115 CB PHE c1148 205.166 320.700 293.265 1.00594.25 ATOM 116 N PRO c1149 202.722 322.319 294.477 1.00594.29 ATOM 117 CA PRO c1149 201.573 322.327 295.388 1.00594.29 ATOM 118 C PRO c1149 201.223 320.928 295.875 1.00594.29 ATOM 119 O PRO c1149 201.503 319.919 295.226 1.00594.29 ATOM 120 CB PRO c1149 200.444 322.909 294.529 1.00594.29 ATOM 121 N PHE c1150 200.600 320.889 297.056 1.00594.29 ATOM 122 CA PHE c1150 200.186 319.615 297.633 1.00594.29 ATOM 123 C PHE c1150 198.956 319.052 296.932 1.00594.29 ATOM 124 O PHE c1150 198.755 317.833 296.919 1.00594.29 ATOM 125 CB PHE c1150 199.917 319.778 299.129 1.00594.29 ATOM 126 N GLU c1151 198.127 319.917 296.352 1.00594.32 ATOM 127 CA GLU c1151 196.923 319.500 295.646 1.00594.32 ATOM 128 C GLU c1151 197.142 319.322 294.150 1.00594.32 ATOM 129 O GLU c1151 196.171 319.105 293.419 1.00594.32 ATOM 130 CB GLU c1151 195.798 320.513 295.882 1.00594.32 ATOM 131 N ARG c1152 198.387 319.411 293.678 1.00594.28 ATOM 132 CA ARG c1152 198.670 319.291 292.252 1.00594.28 ATOM 133 C ARG c1152 198.593 317.855 291.748 1.00594.28 ATOM 134 O ARG c1152 198.505 317.646 290.533 1.00594.28 ATOM 135 CB ARG c1152 200.053 319.868 291.941 1.00594.28 ATOM 136 N LEU c1153 198.623 316.867 292.642 1.00594.29 ATOM 137 CA LEU c1153 198.571 315.469 292.235 1.00594.29 ATOM 138 C LEU c1153 197.151 314.952 292.046 1.00594.29 ATOM 139 O LEU c1153 196.982 313.807 291.613 1.00594.29 ATOM 140 CB LEU c1153 199.299 314.596 293.261 1.00594.29 ATOM 141 N TYR c1154 196.133 315.755 292.367 1.00594.28 ATOM 142 CA TYR c1154 194.754 315.299 292.218 1.00594.28 ATOM 143 C TYR c1154 194.319 315.293 290.757 1.00594.28 ATOM 144 O TYR c1154 193.625 314.370 290.315 1.00594.28 ATOM 145 CB TYR c1154 193.821 316.178 293.051 1.00594.28 ATOM 146 N ASP c1155 194.712 316.315 289.994 1.00594.29 ATOM 147 CA ASP c1155 194.288 316.433 288.605 1.00594.29 ATOM 148 C ASP c1155 195.012 315.468 287.676 1.00594.29 ATOM 149 O ASP c1155 194.418 315.016 286.691 1.00594.29 ATOM 150 CB ASP c1155 194.497 317.867 288.113 1.00594.29 ATOM 151 N LEU c1156 196.267 315.141 287.963 1.00594.27 ATOM 152 CA LEU c1156 197.045 314.283 287.086 1.00594.27 ATOM 153 C LEU c1156 196.727 312.811 287.345 1.00594.27 ATOM 154 O LEU c1156 195.999 312.452 288.275 1.00594.27 ATOM 155 CB LEU c1156 198.539 314.544 287.270 1.00594.27 ATOM 156 N ASN c1157 197.289 311.954 286.499 1.00594.27 ATOM 157 CA ASN c1157 197.141 310.513 286.629 1.00594.27 ATOM 158 C ASN c1157 198.248 309.971 287.532 1.00594.27 ATOM 159 O ASN c1157 198.949 310.725 288.211 1.00594.27 ATOM 160 CB ASN c1157 197.150 309.855 285.251 1.00594.27 ATOM 161 N HIS c1158 198.405 308.646 287.562 1.00594.27 ATOM 162 CA HIS c1158 199.449 308.038 288.383 1.00594.27 ATOM 163 C HIS c1158 200.830 308.262 287.777 1.00594.27 ATOM 164 O HIS c1158 201.791 308.564 288.495 1.00594.27 ATOM 165 CB HIS c1158 199.172 306.545 288.560 1.00594.27 ATOM 166 N ASN c1159 200.943 308.130 286.451 1.00594.24 ATOM 167 CA ASN c1159 202.242 308.239 285.790 1.00594.24 ATOM 168 C ASN c1159 202.747 309.676 285.742 1.00594.24 ATOM 169 O ASN c1159 203.951 309.908 285.903 1.00594.24 ATOM 170 CB ASN c1159 202.159 307.661 284.377 1.00594.24 ATOM 171 N GLU c1160 201.852 310.648 285.535 1.00594.25 ATOM 172 CA GLU c1160 202.267 312.048 285.479 1.00594.25 ATOM 173 C GLU c1160 202.676 312.566 286.854 1.00594.25 ATOM 174 O GLU c1160 203.682 313.278 286.980 1.00594.25 ATOM 175 CB GLU c1160 201.145 312.905 284.894 1.00594.25 ATOM 176 N ILE c1161 201.916 312.204 287.894 1.00594.26 ATOM 177 CA ILE c1161 202.280 312.564 289.263 1.00594.26 ATOM 178 C ILE c1161 203.545 311.837 289.696 1.00594.26 ATOM 179 O ILE c1161 204.363 312.396 290.434 1.00594.26 ATOM 180 CB ILE c1161 201.116 312.282 290.229 1.00594.26 ATOM 181 N GLY c1162 203.735 310.596 289.241 1.00594.25 ATOM 182 CA GLY c1162 204.974 309.879 289.469 1.00594.25 ATOM 183 C GLY c1162 206.197 310.479 288.813 1.00594.25 ATOM 184 O GLY c1162 207.257 310.527 289.442 1.00594.25 ATOM 185 N GLU c1163 206.074 310.947 287.572 1.00594.26 ATOM 186 CA GLU c1163 207.144 311.674 286.900 1.00594.26 ATOM 187 C GLU c1163 207.411 313.037 287.523 1.00594.26 ATOM 188 O GLU c1163 208.556 313.500 287.520 1.00594.26 ATOM 189 CB GLU c1163 206.813 311.850 285.415 1.00594.26 ATOM 190 N LEU c1164 206.375 313.693 288.053 1.00594.25 ATOM 191 CA LEU c1164 206.574 314.987 288.699 1.00594.25 ATOM 192 C LEU c1164 207.230 314.839 290.069 1.00594.25 ATOM 193 O LEU c1164 208.096 315.642 290.435 1.00594.25 ATOM 194 CB LEU c1164 205.239 315.721 288.823 1.00594.25 ATOM 195 N ILE c1165 206.834 313.820 290.842 1.00594.26 ATOM 196 CA ILE c1165 207.299 313.682 292.218 1.00594.26 ATOM 197 C ILE c1165 208.279 312.533 292.408 1.00594.26 ATOM 198 O ILE c1165 208.477 312.102 293.554 1.00594.26 ATOM 199 CB ILE c1165 206.108 313.498 293.181 1.00594.26 ATOM 200 N ARG c1166 208.868 312.014 291.316 1.00594.26 ATOM 201 CA ARG c1166 209.961 311.025 291.317 1.00594.26 ATOM 202 C ARG c1166 209.570 309.709 291.990 1.00594.26 ATOM 203 O ARG c1166 210.370 309.091 292.696 1.00594.26 ATOM 204 CB ARG c1166 211.235 311.597 291.947 1.00594.26 ATOM 205 N MET c1167 208.332 309.271 291.767 1.00594.27 ATOM 206 CA MET c1167 207.838 308.022 292.348 1.00594.27 ATOM 207 C MET c1167 206.760 307.453 291.443 1.00594.27 ATOM 208 O MET c1167 205.562 307.546 291.742 1.00594.27 ATOM 209 CB MET c1167 207.302 308.232 293.763 1.00594.27 ATOM 210 N PRO c1168 207.153 306.842 290.313 1.00594.30 ATOM 211 CA PRO c1168 206.158 306.303 289.373 1.00594.30 ATOM 212 C PRO c1168 205.469 305.048 289.887 1.00594.30 ATOM 213 O PRO c1168 204.336 304.749 289.495 1.00594.30 ATOM 214 CB PRO c1168 206.989 306.010 288.117 1.00594.30 ATOM 215 N LYS c1169 206.147 304.307 290.766 1.00594.33 ATOM 216 CA LYS c1169 205.520 303.147 291.388 1.00594.33 ATOM 217 C LYS c1169 204.521 303.557 292.462 1.00594.33 ATOM 218 O LYS c1169 203.595 302.797 292.768 1.00594.33 ATOM 219 CB LYS c1169 206.588 302.226 291.978 1.00594.33 ATOM 220 N MET c1170 204.688 304.744 293.039 1.00594.30 ATOM 221 CA MET c1170 203.813 305.235 294.094 1.00594.30 ATOM 222 C MET c1170 202.711 306.151 293.578 1.00594.30 ATOM 223 O MET c1170 202.082 306.845 294.383 1.00594.30 ATOM 224 CB MET c1170 204.633 305.969 295.160 1.00594.30 ATOM 225 N GLY c1171 202.473 306.176 292.262 1.00594.30 ATOM 226 CA GLY c1171 201.424 307.018 291.707 1.00594.30 ATOM 227 C GLY c1171 200.022 306.588 292.094 1.00594.30 ATOM 228 O GLY c1171 199.164 307.436 292.361 1.00594.30 ATOM 229 N LYS c1172 199.774 305.275 292.144 1.00594.31 ATOM 230 CA LYS c1172 198.474 304.773 292.584 1.00594.31 ATOM 231 C LYS c1172 198.256 305.024 294.072 1.00594.31 ATOM 232 O LYS c1172 197.133 305.318 294.499 1.00594.31 ATOM 233 CB LYS c1172 198.351 303.283 292.265 1.00594.31 ATOM 234 N THR c1173 199.325 304.933 294.871 1.00594.30 ATOM 235 CA THR c1173 199.232 305.263 296.291 1.00594.30 ATOM 236 C THR c1173 199.005 306.754 296.510 1.00594.30 ATOM 237 O THR c1173 198.270 307.136 297.428 1.00594.30 ATOM 238 CB THR c1173 200.495 304.809 297.023 1.00594.30 ATOM 239 N ILE c1174 199.606 307.602 295.669 1.00594.30 ATOM 240 CA ILE c1174 199.370 309.042 295.741 1.00594.30 ATOM 241 C ILE c1174 197.947 309.385 295.322 1.00594.30 ATOM 242 O ILE c1174 197.323 310.282 295.901 1.00594.30 ATOM 243 CB ILE c1174 200.406 309.796 294.884 1.00594.30 ATOM 244 N HIS c1175 197.410 308.678 294.320 1.00594.30 ATOM 245 CA HIS c1175 196.016 308.869 293.922 1.00594.30 ATOM 246 C HIS c1175 195.045 308.404 295.003 1.00594.30 ATOM 247 O HIS c1175 194.020 309.057 295.236 1.00594.30 ATOM 248 CB HIS c1175 195.740 308.135 292.610 1.00594.30 ATOM 249 N LYS c1176 195.356 307.291 295.677 1.00594.29 ATOM 250 CA LYS c1176 194.538 306.829 296.796 1.00594.29 ATOM 251 C LYS c1176 194.611 307.780 297.986 1.00594.29 ATOM 252 O LYS c1176 193.601 307.997 298.664 1.00594.29 ATOM 253 CB LYS c1176 194.967 305.423 297.216 1.00594.29 ATOM 254 N TYR c1177 195.784 308.368 298.240 1.00594.28 ATOM 255 CA TYR c1177 195.913 309.367 299.297 1.00594.28 ATOM 256 C TYR c1177 195.181 310.659 298.954 1.00594.28 ATOM 257 O TYR c1177 194.628 311.310 299.850 1.00594.28 ATOM 258 CB TYR c1177 197.390 309.654 299.563 1.00594.28 ATOM 259 N VAL c1178 195.172 311.046 297.674 1.00594.31 ATOM 260 CA VAL c1178 194.421 312.221 297.241 1.00594.31 ATOM 261 C VAL c1178 192.921 311.974 297.337 1.00594.31 ATOM 262 O VAL c1178 192.156 312.886 297.677 1.00594.31 ATOM 263 CB VAL c1178 194.834 312.621 295.813 1.00594.31 ATOM 264 N HIS c1179 192.472 310.756 297.033 1.00594.30 ATOM 265 CA HIS c1179 191.077 310.380 297.226 1.00594.30 ATOM 266 C HIS c1179 190.684 310.292 298.696 1.00594.30 ATOM 267 O HIS c1179 189.540 310.616 299.034 1.00594.30 ATOM 268 CB HIS c1179 190.794 309.042 296.537 1.00594.30 ATOM 269 N LEU c1180 191.595 309.868 299.571 1.00594.26 ATOM 270 CA LEU c1180 191.325 309.787 301.001 1.00594.26 ATOM 271 C LEU c1180 191.498 311.112 301.729 1.00594.26 ATOM 272 O LEU c1180 191.066 311.229 302.880 1.00594.26 ATOM 273 CB LEU c1180 192.233 308.738 301.653 1.00594.26 TER