HEADER SPLICING 31-DEC-69 6J6G TITLE Cryo-EM structure of the yeast B*-a2 complex at an average resolution TITLE 2 of 3.2 angstrom COMPND MOL_ID: 3; COMPND 2 MOLECULE: Pre-mRNA-splicing factor CWC21; COMPND 3 CHAIN: J; EXPDTA ELECTRON MICROSCOPY DBREF 6J6G J 1 135 UNP Q03375 CWC21_YEAST 1 135 SEQRES 1 J 27 SER TYR ASN GLY ILE GLY LEU LYS SER ALA LYS GLY SER SEQRES 2 J 27 SER THR SER GLY HIS VAL GLN ARG SER LEU ALA SER ASN SEQRES 3 J 27 ASN ATOM 1 N SER J 2 289.937 318.440 258.111 1.00 56.39 ATOM 2 CA SER J 2 289.761 317.377 257.132 1.00 56.39 ATOM 3 C SER J 2 290.864 316.334 257.261 1.00 56.39 ATOM 4 O SER J 2 291.916 316.602 257.837 1.00 56.39 ATOM 5 CB SER J 2 289.729 317.958 255.721 1.00 56.39 ATOM 6 OG SER J 2 290.965 318.559 255.386 1.00 56.39 ATOM 7 N TYR J 3 290.618 315.145 256.711 1.00 52.63 ATOM 8 CA TYR J 3 291.520 314.002 256.845 1.00 52.63 ATOM 9 C TYR J 3 292.730 314.231 255.944 1.00 52.63 ATOM 10 O TYR J 3 292.829 313.720 254.828 1.00 52.63 ATOM 11 CB TYR J 3 290.788 312.716 256.479 1.00 52.63 ATOM 12 CG TYR J 3 291.534 311.433 256.754 1.00 52.63 ATOM 13 CD1 TYR J 3 291.537 310.873 258.019 1.00 52.63 ATOM 14 CD2 TYR J 3 292.238 310.783 255.747 1.00 52.63 ATOM 15 CE1 TYR J 3 292.218 309.699 258.273 1.00 52.63 ATOM 16 CE2 TYR J 3 292.924 309.615 255.992 1.00 52.63 ATOM 17 CZ TYR J 3 292.909 309.076 257.256 1.00 52.63 ATOM 18 OH TYR J 3 293.593 307.907 257.501 1.00 52.63 ATOM 19 N ASN J 4 293.689 315.003 256.446 1.00 57.12 ATOM 20 CA ASN J 4 294.840 315.408 255.642 1.00 57.12 ATOM 21 C ASN J 4 296.032 314.494 255.872 1.00 57.12 ATOM 22 O ASN J 4 297.181 314.941 255.895 1.00 57.12 ATOM 23 CB ASN J 4 295.206 316.859 255.931 1.00 57.12 ATOM 24 CG ASN J 4 294.163 317.833 255.419 1.00 57.12 ATOM 25 OD1 ASN J 4 293.607 317.651 254.341 1.00 57.12 ATOM 26 ND2 ASN J 4 293.905 318.881 256.188 1.00 57.12 ATOM 27 N GLY J 5 295.774 313.201 256.048 1.00 63.87 ATOM 28 CA GLY J 5 296.800 312.235 256.367 1.00 63.87 ATOM 29 C GLY J 5 296.930 311.941 257.840 1.00 63.87 ATOM 30 O GLY J 5 297.804 311.158 258.225 1.00 63.87 ATOM 31 N ILE J 6 296.080 312.535 258.665 1.00 62.42 ATOM 32 CA ILE J 6 296.158 312.453 260.115 1.00 62.42 ATOM 33 C ILE J 6 294.892 311.800 260.639 1.00 62.42 ATOM 34 O ILE J 6 293.833 311.853 260.008 1.00 62.42 ATOM 35 CB ILE J 6 296.349 313.852 260.728 1.00 62.42 ATOM 36 CG1 ILE J 6 295.241 314.766 260.216 1.00 62.42 ATOM 37 CG2 ILE J 6 297.710 314.408 260.377 1.00 62.42 ATOM 38 CD1 ILE J 6 295.169 316.065 260.883 1.00 62.42 ATOM 39 N GLY J 7 295.006 311.169 261.800 1.00 59.65 ATOM 40 CA GLY J 7 293.848 310.541 262.395 1.00 59.65 ATOM 41 C GLY J 7 293.834 309.037 262.242 1.00 59.65 ATOM 42 O GLY J 7 294.889 308.398 262.200 1.00 59.65 ATOM 43 N LEU J 8 292.642 308.461 262.152 1.00 52.22 ATOM 44 CA LEU J 8 292.477 307.020 262.140 1.00 52.22 ATOM 45 C LEU J 8 291.839 306.556 260.843 1.00 52.22 ATOM 46 O LEU J 8 291.156 307.312 260.150 1.00 52.22 ATOM 47 CB LEU J 8 291.612 306.548 263.307 1.00 52.22 ATOM 48 CG LEU J 8 292.225 306.653 264.692 1.00 52.22 ATOM 49 CD1 LEU J 8 291.182 306.321 265.728 1.00 52.22 ATOM 50 CD2 LEU J 8 293.410 305.721 264.805 1.00 52.22 ATOM 51 N LYS J 9 292.076 305.283 260.534 1.00 53.73 ATOM 52 CA LYS J 9 291.354 304.638 259.448 1.00 53.73 ATOM 53 C LYS J 9 289.881 304.491 259.803 1.00 53.73 ATOM 54 O LYS J 9 289.008 304.648 258.941 1.00 53.73 ATOM 55 CB LYS J 9 291.995 303.286 259.149 1.00 53.73 ATOM 56 CG LYS J 9 293.419 303.405 258.627 1.00 53.73 ATOM 57 CD LYS J 9 294.083 302.052 258.429 1.00 53.73 ATOM 58 CE LYS J 9 293.548 301.343 257.205 1.00 53.73 ATOM 59 NZ LYS J 9 293.931 302.062 255.964 1.00 53.73 ATOM 60 N SER J 10 289.593 304.211 261.072 1.00 51.68 ATOM 61 CA SER J 10 288.241 304.212 261.614 1.00 51.68 ATOM 62 C SER J 10 288.340 304.331 263.126 1.00 51.68 ATOM 63 O SER J 10 289.405 304.141 263.715 1.00 51.68 ATOM 64 CB SER J 10 287.465 302.948 261.232 1.00 51.68 ATOM 65 OG SER J 10 286.177 302.957 261.820 1.00 51.68 ATOM 66 N ALA J 11 287.204 304.629 263.753 1.00 56.46 ATOM 67 CA ALA J 11 287.103 304.665 265.204 1.00 56.46 ATOM 68 C ALA J 11 286.364 303.454 265.762 1.00 56.46 ATOM 69 O ALA J 11 285.929 303.478 266.916 1.00 56.46 ATOM 70 CB ALA J 11 286.422 305.957 265.654 1.00 56.46 ATOM 71 N LYS J 12 286.216 302.398 264.963 1.00 46.83 ATOM 72 CA LYS J 12 285.488 301.213 265.407 1.00 46.83 ATOM 73 C LYS J 12 286.314 300.379 266.378 1.00 46.83 ATOM 74 O LYS J 12 285.915 300.166 267.528 1.00 46.83 ATOM 75 CB LYS J 12 285.069 300.393 264.189 1.00 46.83 ATOM 76 CG LYS J 12 284.469 299.034 264.470 1.00 46.83 ATOM 77 CD LYS J 12 283.884 298.482 263.181 1.00 46.83 ATOM 78 CE LYS J 12 283.428 297.047 263.300 1.00 46.83 ATOM 79 NZ LYS J 12 284.587 296.130 263.246 1.00 46.83 ATOM 80 N GLY J 13 287.464 299.892 265.934 1.00 52.25 ATOM 81 CA GLY J 13 288.298 299.064 266.776 1.00 52.25 ATOM 82 C GLY J 13 289.294 299.815 267.625 1.00 52.25 ATOM 83 O GLY J 13 290.152 299.193 268.258 1.00 52.25 ATOM 84 N SER J 14 289.203 301.141 267.661 1.00 54.04 ATOM 85 CA SER J 14 290.203 301.955 268.331 1.00 54.04 ATOM 86 C SER J 14 289.930 302.152 269.810 1.00 54.04 ATOM 87 O SER J 14 290.856 302.519 270.542 1.00 54.04 ATOM 88 CB SER J 14 290.291 303.320 267.657 1.00 54.04 ATOM 89 OG SER J 14 291.221 304.151 268.325 1.00 54.04 ATOM 90 N SER J 15 288.678 301.964 270.241 1.00 53.24 ATOM 91 CA SER J 15 288.172 302.266 271.583 1.00 53.24 ATOM 92 C SER J 15 288.349 303.732 271.968 1.00 53.24 ATOM 93 O SER J 15 288.416 304.061 273.154 1.00 53.24 ATOM 94 CB SER J 15 288.798 301.364 272.650 1.00 53.24 ATOM 95 OG SER J 15 288.446 300.009 272.450 1.00 53.24 ATOM 96 N THR J 16 288.431 304.619 270.982 1.00 58.81 ATOM 97 CA THR J 16 288.406 306.062 271.158 1.00 58.81 ATOM 98 C THR J 16 287.232 306.607 270.349 1.00 58.81 ATOM 99 O THR J 16 286.437 305.850 269.789 1.00 58.81 ATOM 100 CB THR J 16 289.720 306.707 270.706 1.00 58.81 ATOM 101 OG1 THR J 16 289.858 306.557 269.290 1.00 58.81 ATOM 102 CG2 THR J 16 290.911 306.050 271.367 1.00 58.81 ATOM 103 N SER J 17 287.129 307.930 270.281 1.00 64.81 ATOM 104 CA SER J 17 286.144 308.557 269.411 1.00 64.81 ATOM 105 C SER J 17 286.698 308.877 268.034 1.00 64.81 ATOM 106 O SER J 17 285.921 309.017 267.085 1.00 64.81 ATOM 107 CB SER J 17 285.613 309.844 270.042 1.00 64.81 ATOM 108 OG SER J 17 286.629 310.825 270.119 1.00 64.81 ATOM 109 N GLY J 18 288.016 308.991 267.904 1.00 67.93 ATOM 110 CA GLY J 18 288.610 309.422 266.659 1.00 67.93 ATOM 111 C GLY J 18 288.639 310.918 266.471 1.00 67.93 ATOM 112 O GLY J 18 288.864 311.386 265.353 1.00 67.93 ATOM 113 N HIS J 19 288.417 311.685 267.533 1.00 62.61 ATOM 114 CA HIS J 19 288.367 313.135 267.434 1.00 62.61 ATOM 115 C HIS J 19 289.777 313.692 267.342 1.00 62.61 ATOM 116 O HIS J 19 290.576 313.535 268.270 1.00 62.61 ATOM 117 CB HIS J 19 287.636 313.732 268.631 1.00 62.61 ATOM 118 CG HIS J 19 287.621 315.227 268.637 1.00 62.61 ATOM 119 ND1 HIS J 19 286.827 315.967 267.790 1.00 62.61 ATOM 120 CD2 HIS J 19 288.323 316.121 269.371 1.00 62.61 ATOM 121 CE1 HIS J 19 287.032 317.252 268.009 1.00 62.61 ATOM 122 NE2 HIS J 19 287.934 317.373 268.964 1.00 62.61 ATOM 123 N VAL J 20 290.077 314.354 266.231 1.00 62.69 ATOM 124 CA VAL J 20 291.390 314.930 265.984 1.00 62.69 ATOM 125 C VAL J 20 291.266 316.440 266.082 1.00 62.69 ATOM 126 O VAL J 20 290.350 317.032 265.503 1.00 62.69 ATOM 127 CB VAL J 20 291.938 314.502 264.612 1.00 62.69 ATOM 128 CG1 VAL J 20 293.278 315.151 264.341 1.00 62.69 ATOM 129 CG2 VAL J 20 292.061 313.001 264.555 1.00 62.69 ATOM 130 N GLN J 21 292.160 317.057 266.841 1.00 57.68 ATOM 131 CA GLN J 21 292.241 318.504 266.914 1.00 57.68 ATOM 132 C GLN J 21 293.688 318.925 266.729 1.00 57.68 ATOM 133 O GLN J 21 294.607 318.226 267.161 1.00 57.68 ATOM 134 CB GLN J 21 291.666 319.024 268.233 1.00 57.68 ATOM 135 CG GLN J 21 292.317 318.477 269.482 1.00 57.68 ATOM 136 CD GLN J 21 291.577 318.905 270.724 1.00 57.68 ATOM 137 OE1 GLN J 21 290.635 319.690 270.653 1.00 57.68 ATOM 138 NE2 GLN J 21 291.981 318.375 271.867 1.00 57.68 ATOM 139 N ARG J 22 293.879 320.051 266.053 1.00 68.20 ATOM 140 CA ARG J 22 295.219 320.505 265.724 1.00 68.20 ATOM 141 C ARG J 22 295.926 321.023 266.964 1.00 68.20 ATOM 142 O ARG J 22 295.337 321.733 267.781 1.00 68.20 ATOM 143 CB ARG J 22 295.162 321.597 264.659 1.00 68.20 ATOM 144 CG ARG J 22 296.520 322.059 264.173 1.00 68.20 ATOM 145 CD ARG J 22 296.393 323.077 263.065 1.00 68.20 ATOM 146 NE ARG J 22 297.693 323.586 262.643 1.00 68.20 ATOM 147 CZ ARG J 22 298.468 322.996 261.738 1.00 68.20 ATOM 148 NH1 ARG J 22 298.077 321.868 261.162 1.00 68.20 ATOM 149 NH2 ARG J 22 299.635 323.534 261.411 1.00 68.20 ATOM 150 N SER J 23 297.192 320.644 267.108 1.00 57.94 ATOM 151 CA SER J 23 298.025 321.136 268.193 1.00 57.94 ATOM 152 C SER J 23 298.280 322.623 267.999 1.00 57.94 ATOM 153 O SER J 23 298.980 323.025 267.066 1.00 57.94 ATOM 154 CB SER J 23 299.338 320.368 268.233 1.00 57.94 ATOM 155 OG SER J 23 300.155 320.824 269.291 1.00 57.94 ATOM 156 N LEU J 24 297.719 323.443 268.887 1.00 55.88 ATOM 157 CA LEU J 24 297.992 324.873 268.891 1.00 55.88 ATOM 158 C LEU J 24 299.408 325.193 269.350 1.00 55.88 ATOM 159 O LEU J 24 299.868 326.324 269.156 1.00 55.88 ATOM 160 CB LEU J 24 296.986 325.607 269.787 1.00 55.88 ATOM 161 CG LEU J 24 295.597 325.965 269.241 1.00 55.88 ATOM 162 CD1 LEU J 24 294.663 324.775 269.117 1.00 55.88 ATOM 163 CD2 LEU J 24 294.957 327.033 270.106 1.00 55.88 ATOM 164 N ALA J 25 300.100 324.230 269.955 1.00 58.91 ATOM 165 CA ALA J 25 301.463 324.433 270.424 1.00 58.91 ATOM 166 C ALA J 25 302.467 324.416 269.279 1.00 58.91 ATOM 167 O ALA J 25 303.457 325.154 269.311 1.00 58.91 ATOM 168 CB ALA J 25 301.815 323.362 271.454 1.00 58.91 ATOM 169 N SER J 26 302.236 323.586 268.265 1.00 65.97 ATOM 170 CA SER J 26 303.165 323.449 267.145 1.00 65.97 ATOM 171 C SER J 26 302.766 324.436 266.058 1.00 65.97 ATOM 172 O SER J 26 301.840 324.183 265.284 1.00 65.97 ATOM 173 CB SER J 26 303.162 322.022 266.615 1.00 65.97 ATOM 174 OG SER J 26 301.909 321.713 266.036 1.00 65.97 ATOM 175 N ASN J 27 303.457 325.562 266.002 1.00 81.17 ATOM 176 CA ASN J 27 303.180 326.579 264.993 1.00 81.17 ATOM 177 C ASN J 27 304.412 327.033 264.223 1.00 81.17 ATOM 178 O ASN J 27 304.327 327.245 263.011 1.00 81.17 ATOM 179 CB ASN J 27 302.486 327.784 265.661 1.00 81.17 ATOM 180 CG ASN J 27 303.272 328.349 266.840 1.00 81.17 ATOM 181 OD1 ASN J 27 304.388 327.922 267.137 1.00 81.17 ATOM 182 ND2 ASN J 27 302.676 329.315 267.524 1.00 81.17 ATOM 183 N ASN J 28 305.553 327.174 264.890 1.00 94.52 ATOM 184 CA ASN J 28 306.770 327.652 264.243 1.00 94.52 ATOM 185 C ASN J 28 307.988 326.870 264.721 1.00 94.52 ATOM 186 O ASN J 28 308.919 327.442 265.288 1.00 94.52 ATOM 187 CB ASN J 28 306.970 329.146 264.507 1.00 94.52 ATOM 188 CG ASN J 28 305.994 330.014 263.735 1.00 94.52 ATOM 189 OD1 ASN J 28 305.736 329.778 262.555 1.00 94.52 ATOM 190 ND2 ASN J 28 305.445 331.024 264.400 1.00 94.52 TER