HEADER SPLICING 31-DEC-69 6J6H TITLE Cryo-EM structure of the yeast B*-a1 complex at an average resolution TITLE 2 of 3.6 angstrom COMPND MOL_ID: 3; COMPND 2 MOLECULE: Pre-mRNA-splicing factor CWC21; COMPND 3 CHAIN: J; EXPDTA ELECTRON MICROSCOPY DBREF 6J6H 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 2 289.782 318.842 257.784 1.00 62.85 ATOM 2 CA SER J 2 289.622 317.679 256.924 1.00 62.85 ATOM 3 C SER J 2 290.654 316.608 257.234 1.00 62.85 ATOM 4 O SER J 2 291.670 316.875 257.868 1.00 62.85 ATOM 5 CB SER J 2 289.726 318.083 255.459 1.00 62.85 ATOM 6 OG SER J 2 291.025 318.543 255.149 1.00 62.85 ATOM 7 N TYR J 3 290.394 315.396 256.756 1.00 62.41 ATOM 8 CA TYR J 3 291.247 314.237 257.008 1.00 62.41 ATOM 9 C TYR J 3 292.491 314.364 256.139 1.00 62.41 ATOM 10 O TYR J 3 292.552 313.858 255.023 1.00 62.41 ATOM 11 CB TYR J 3 290.483 312.955 256.706 1.00 62.41 ATOM 12 CG TYR J 3 291.224 311.680 257.008 1.00 62.41 ATOM 13 CD1 TYR J 3 291.283 311.181 258.295 1.00 62.41 ATOM 14 CD2 TYR J 3 291.863 310.974 256.000 1.00 62.41 ATOM 15 CE1 TYR J 3 291.957 310.016 258.569 1.00 62.41 ATOM 16 CE2 TYR J 3 292.547 309.821 256.264 1.00 62.41 ATOM 17 CZ TYR J 3 292.589 309.343 257.547 1.00 62.41 ATOM 18 OH TYR J 3 293.272 308.179 257.805 1.00 62.41 ATOM 19 N ASN J 4 293.520 315.023 256.659 1.00 67.83 ATOM 20 CA ASN J 4 294.697 315.337 255.855 1.00 67.83 ATOM 21 C ASN J 4 295.798 314.307 256.029 1.00 67.83 ATOM 22 O ASN J 4 296.979 314.651 256.078 1.00 67.83 ATOM 23 CB ASN J 4 295.212 316.730 256.189 1.00 67.83 ATOM 24 CG ASN J 4 294.295 317.817 255.693 1.00 67.83 ATOM 25 OD1 ASN J 4 293.745 317.727 254.598 1.00 67.83 ATOM 26 ND2 ASN J 4 294.129 318.861 256.494 1.00 67.83 ATOM 27 N GLY J 5 295.445 313.032 256.129 1.00 65.63 ATOM 28 CA GLY J 5 296.421 312.007 256.417 1.00 65.63 ATOM 29 C GLY J 5 296.663 311.811 257.890 1.00 65.63 ATOM 30 O GLY J 5 297.559 311.045 258.265 1.00 65.63 ATOM 31 N ILE J 6 295.893 312.486 258.729 1.00 70.49 ATOM 32 CA ILE J 6 296.027 312.445 260.174 1.00 70.49 ATOM 33 C ILE J 6 294.775 311.805 260.745 1.00 70.49 ATOM 34 O ILE J 6 293.660 312.088 260.293 1.00 70.49 ATOM 35 CB ILE J 6 296.245 313.854 260.743 1.00 70.49 ATOM 36 CG1 ILE J 6 295.259 314.817 260.088 1.00 70.49 ATOM 37 CG2 ILE J 6 297.672 314.299 260.520 1.00 70.49 ATOM 38 CD1 ILE J 6 295.163 316.125 260.733 1.00 70.49 ATOM 39 N GLY J 7 294.958 310.907 261.689 1.00 62.29 ATOM 40 CA GLY J 7 293.798 310.321 262.307 1.00 62.29 ATOM 41 C GLY J 7 293.834 308.823 262.190 1.00 62.29 ATOM 42 O GLY J 7 294.901 308.212 262.073 1.00 62.29 ATOM 43 N LEU J 8 292.650 308.231 262.212 1.00 55.25 ATOM 44 CA LEU J 8 292.492 306.789 262.237 1.00 55.25 ATOM 45 C LEU J 8 291.771 306.337 260.986 1.00 55.25 ATOM 46 O LEU J 8 290.973 307.089 260.419 1.00 55.25 ATOM 47 CB LEU J 8 291.710 306.349 263.459 1.00 55.25 ATOM 48 CG LEU J 8 292.431 306.638 264.756 1.00 55.25 ATOM 49 CD1 LEU J 8 291.477 306.350 265.862 1.00 55.25 ATOM 50 CD2 LEU J 8 293.679 305.790 264.875 1.00 55.25 ATOM 51 N LYS J 9 292.097 305.127 260.542 1.00 65.02 ATOM 52 CA LYS J 9 291.355 304.490 259.465 1.00 65.02 ATOM 53 C LYS J 9 289.884 304.322 259.827 1.00 65.02 ATOM 54 O LYS J 9 289.004 304.502 258.977 1.00 65.02 ATOM 55 CB LYS J 9 292.012 303.154 259.142 1.00 65.02 ATOM 56 CG LYS J 9 293.406 303.325 258.570 1.00 65.02 ATOM 57 CD LYS J 9 294.093 301.998 258.327 1.00 65.02 ATOM 58 CE LYS J 9 293.444 301.263 257.177 1.00 65.02 ATOM 59 NZ LYS J 9 293.618 302.005 255.902 1.00 65.02 ATOM 60 N SER J 10 289.600 303.994 261.086 1.00 58.03 ATOM 61 CA SER J 10 288.245 304.004 261.619 1.00 58.03 ATOM 62 C SER J 10 288.327 304.085 263.132 1.00 58.03 ATOM 63 O SER J 10 289.290 303.612 263.737 1.00 58.03 ATOM 64 CB SER J 10 287.450 302.760 261.212 1.00 58.03 ATOM 65 OG SER J 10 286.152 302.786 261.778 1.00 58.03 ATOM 66 N ALA J 11 287.301 304.668 263.737 1.00 67.72 ATOM 67 CA ALA J 11 287.195 304.709 265.187 1.00 67.72 ATOM 68 C ALA J 11 286.484 303.491 265.752 1.00 67.72 ATOM 69 O ALA J 11 286.126 303.493 266.932 1.00 67.72 ATOM 70 CB ALA J 11 286.471 305.980 265.632 1.00 67.72 ATOM 71 N LYS J 12 286.264 302.464 264.933 1.00 59.90 ATOM 72 CA LYS J 12 285.501 301.299 265.364 1.00 59.90 ATOM 73 C LYS J 12 286.284 300.449 266.352 1.00 59.90 ATOM 74 O LYS J 12 285.867 300.276 267.501 1.00 59.90 ATOM 75 CB LYS J 12 285.103 300.486 264.141 1.00 59.90 ATOM 76 CG LYS J 12 284.372 299.212 264.427 1.00 59.90 ATOM 77 CD LYS J 12 283.858 298.672 263.123 1.00 59.90 ATOM 78 CE LYS J 12 283.133 297.383 263.290 1.00 59.90 ATOM 79 NZ LYS J 12 284.029 296.231 263.432 1.00 59.90 ATOM 80 N GLY J 13 287.435 299.939 265.940 1.00 62.53 ATOM 81 CA GLY J 13 288.252 299.144 266.825 1.00 62.53 ATOM 82 C GLY J 13 289.217 299.954 267.646 1.00 62.53 ATOM 83 O GLY J 13 290.034 299.381 268.371 1.00 62.53 ATOM 84 N SER J 14 289.145 301.278 267.551 1.00 64.28 ATOM 85 CA SER J 14 290.085 302.141 268.250 1.00 64.28 ATOM 86 C SER J 14 289.811 302.215 269.737 1.00 64.28 ATOM 87 O SER J 14 290.730 302.508 270.511 1.00 64.28 ATOM 88 CB SER J 14 290.023 303.542 267.673 1.00 64.28 ATOM 89 OG SER J 14 290.798 304.424 268.461 1.00 64.28 ATOM 90 N SER J 15 288.547 302.030 270.129 1.00 64.26 ATOM 91 CA SER J 15 287.967 302.261 271.453 1.00 64.26 ATOM 92 C SER J 15 287.994 303.726 271.862 1.00 64.26 ATOM 93 O SER J 15 287.777 304.036 273.036 1.00 64.26 ATOM 94 CB SER J 15 288.624 301.414 272.545 1.00 64.26 ATOM 95 OG SER J 15 288.460 300.035 272.278 1.00 64.26 ATOM 96 N THR J 16 288.252 304.633 270.930 1.00 67.55 ATOM 97 CA THR J 16 288.199 306.065 271.143 1.00 67.55 ATOM 98 C THR J 16 287.058 306.632 270.316 1.00 67.55 ATOM 99 O THR J 16 286.314 305.899 269.659 1.00 67.55 ATOM 100 CB THR J 16 289.521 306.720 270.753 1.00 67.55 ATOM 101 OG1 THR J 16 289.698 306.608 269.338 1.00 67.55 ATOM 102 CG2 THR J 16 290.672 306.026 271.426 1.00 67.55 ATOM 103 N SER J 17 286.930 307.950 270.328 1.00 70.75 ATOM 104 CA SER J 17 285.996 308.607 269.432 1.00 70.75 ATOM 105 C SER J 17 286.614 308.934 268.084 1.00 70.75 ATOM 106 O SER J 17 285.879 309.144 267.116 1.00 70.75 ATOM 107 CB SER J 17 285.469 309.890 270.069 1.00 70.75 ATOM 108 OG SER J 17 286.511 310.835 270.206 1.00 70.75 ATOM 109 N GLY J 18 287.939 308.970 267.997 1.00 67.61 ATOM 110 CA GLY J 18 288.590 309.372 266.770 1.00 67.61 ATOM 111 C GLY J 18 288.656 310.863 266.573 1.00 67.61 ATOM 112 O GLY J 18 288.909 311.320 265.456 1.00 67.61 ATOM 113 N HIS J 19 288.441 311.638 267.629 1.00 68.05 ATOM 114 CA HIS J 19 288.383 313.088 267.521 1.00 68.05 ATOM 115 C HIS J 19 289.792 313.651 267.411 1.00 68.05 ATOM 116 O HIS J 19 290.636 313.395 268.274 1.00 68.05 ATOM 117 CB HIS J 19 287.653 313.664 268.727 1.00 68.05 ATOM 118 CG HIS J 19 287.520 315.149 268.694 1.00 68.05 ATOM 119 ND1 HIS J 19 286.703 315.799 267.799 1.00 68.05 ATOM 120 CD2 HIS J 19 288.084 316.111 269.458 1.00 68.05 ATOM 121 CE1 HIS J 19 286.785 317.100 267.999 1.00 68.05 ATOM 122 NE2 HIS J 19 287.610 317.316 269.006 1.00 68.05 ATOM 123 N VAL J 20 290.048 314.407 266.348 1.00 69.09 ATOM 124 CA VAL J 20 291.371 314.938 266.047 1.00 69.09 ATOM 125 C VAL J 20 291.296 316.454 266.054 1.00 69.09 ATOM 126 O VAL J 20 290.446 317.039 265.378 1.00 69.09 ATOM 127 CB VAL J 20 291.886 314.432 264.690 1.00 69.09 ATOM 128 CG1 VAL J 20 293.210 315.072 264.347 1.00 69.09 ATOM 129 CG2 VAL J 20 292.024 312.934 264.714 1.00 69.09 ATOM 130 N GLN J 21 292.183 317.087 266.808 1.00 60.60 ATOM 131 CA GLN J 21 292.280 318.535 266.842 1.00 60.60 ATOM 132 C GLN J 21 293.727 318.952 266.636 1.00 60.60 ATOM 133 O GLN J 21 294.651 318.241 267.038 1.00 60.60 ATOM 134 CB GLN J 21 291.721 319.079 268.149 1.00 60.60 ATOM 135 CG GLN J 21 292.357 318.502 269.383 1.00 60.60 ATOM 136 CD GLN J 21 291.657 318.953 270.637 1.00 60.60 ATOM 137 OE1 GLN J 21 290.741 319.768 270.589 1.00 60.60 ATOM 138 NE2 GLN J 21 292.080 318.423 271.769 1.00 60.60 ATOM 139 N ARG J 22 293.916 320.083 265.967 1.00 72.55 ATOM 140 CA ARG J 22 295.256 320.523 265.616 1.00 72.55 ATOM 141 C ARG J 22 295.996 321.027 266.844 1.00 72.55 ATOM 142 O ARG J 22 295.418 321.698 267.701 1.00 72.55 ATOM 143 CB ARG J 22 295.193 321.613 264.547 1.00 72.55 ATOM 144 CG ARG J 22 296.558 322.025 264.030 1.00 72.55 ATOM 145 CD ARG J 22 296.504 322.961 262.848 1.00 72.55 ATOM 146 NE ARG J 22 297.854 323.360 262.465 1.00 72.55 ATOM 147 CZ ARG J 22 298.642 322.658 261.656 1.00 72.55 ATOM 148 NH1 ARG J 22 298.217 321.518 261.129 1.00 72.55 ATOM 149 NH2 ARG J 22 299.859 323.099 261.369 1.00 72.55 ATOM 150 N SER J 23 297.277 320.675 266.938 1.00 61.57 ATOM 151 CA SER J 23 298.124 321.176 268.009 1.00 61.57 ATOM 152 C SER J 23 298.314 322.675 267.866 1.00 61.57 ATOM 153 O SER J 23 298.995 323.139 266.948 1.00 61.57 ATOM 154 CB SER J 23 299.476 320.476 268.000 1.00 61.57 ATOM 155 OG SER J 23 300.329 321.035 268.982 1.00 61.57 ATOM 156 N LEU J 24 297.723 323.430 268.789 1.00 60.09 ATOM 157 CA LEU J 24 297.950 324.866 268.841 1.00 60.09 ATOM 158 C LEU J 24 299.360 325.199 269.302 1.00 60.09 ATOM 159 O LEU J 24 299.826 326.319 269.076 1.00 60.09 ATOM 160 CB LEU J 24 296.934 325.533 269.770 1.00 60.09 ATOM 161 CG LEU J 24 295.527 325.868 269.268 1.00 60.09 ATOM 162 CD1 LEU J 24 294.646 324.646 269.136 1.00 60.09 ATOM 163 CD2 LEU J 24 294.876 326.871 270.193 1.00 60.09 ATOM 164 N ALA J 25 300.040 324.252 269.948 1.00 64.04 ATOM 165 CA ALA J 25 301.388 324.493 270.440 1.00 64.04 ATOM 166 C ALA J 25 302.397 324.571 269.303 1.00 64.04 ATOM 167 O ALA J 25 303.264 325.452 269.297 1.00 64.04 ATOM 168 CB ALA J 25 301.777 323.394 271.421 1.00 64.04 ATOM 169 N SER J 26 302.306 323.665 268.337 1.00 63.21 ATOM 170 CA SER J 26 303.308 323.549 267.280 1.00 63.21 ATOM 171 C SER J 26 302.858 324.377 266.086 1.00 63.21 ATOM 172 O SER J 26 302.028 323.935 265.290 1.00 63.21 ATOM 173 CB SER J 26 303.511 322.094 266.882 1.00 63.21 ATOM 174 OG SER J 26 302.363 321.594 266.223 1.00 63.21 ATOM 175 N ASN J 27 303.405 325.573 265.963 1.00 81.93 ATOM 176 CA ASN J 27 303.126 326.400 264.795 1.00 81.93 ATOM 177 C ASN J 27 304.379 326.890 264.084 1.00 81.93 ATOM 178 O ASN J 27 304.404 326.921 262.852 1.00 81.93 ATOM 179 CB ASN J 27 302.235 327.597 265.195 1.00 81.93 ATOM 180 CG ASN J 27 302.821 328.425 266.330 1.00 81.93 ATOM 181 OD1 ASN J 27 303.918 328.158 266.822 1.00 81.93 ATOM 182 ND2 ASN J 27 302.082 329.447 266.746 1.00 81.93 ATOM 183 N ASN J 28 305.417 327.263 264.822 1.00 88.02 ATOM 184 CA ASN J 28 306.600 327.853 264.213 1.00 88.02 ATOM 185 C ASN J 28 307.868 327.099 264.592 1.00 88.02 ATOM 186 O ASN J 28 308.961 327.667 264.590 1.00 88.02 ATOM 187 CB ASN J 28 306.724 329.321 264.620 1.00 88.02 ATOM 188 CG ASN J 28 305.635 330.185 264.019 1.00 88.02 ATOM 189 OD1 ASN J 28 305.271 330.024 262.855 1.00 88.02 ATOM 190 ND2 ASN J 28 305.111 331.113 264.812 1.00 88.02 TER