HEADER SPLICING 31-DEC-69 6AH0 TITLE The Cryo-EM Structure of the Precusor of Human Pre-catalytic TITLE 2 Spliceosome (pre-B complex) COMPND MOL_ID: 17; COMPND 2 MOLECULE: U6 snRNA-associated Sm-like protein LSm7; COMPND 3 CHAIN: y; EXPDTA ELECTRON MICROSCOPY REMARK 465 MISSING RESIDUES REMARK 465 THE FOLLOWING RESIDUES WERE NOT LOCATED IN THE REMARK 465 EXPERIMENT. (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN REMARK 465 IDENTIFIER; SSSEQ=SEQUENCE NUMBER; I=INSERTION CODE.) REMARK 465 REMARK 465 M RES C SSSEQI REMARK 465 ARG y 56 REMARK 465 ASP y 57 REMARK 465 PRO y 58 REMARK 465 ASP y 59 REMARK 465 ASP y 60 REMARK 465 GLN y 61 REMARK 465 TYR y 62 REMARK 465 LYS y 63 REMARK 465 LEU y 64 REMARK 465 THR y 65 REMARK 465 GLU y 66 REMARK 465 ASP y 67 DBREF 6AH0 y 1 103 UNP Q9UK45 LSM7_HUMAN 1 103 SEQRES 1 y 77 SER ILE LEU ASP LEU SER LYS TYR ILE ASP LYS THR ILE SEQRES 2 y 77 ARG VAL LYS PHE GLN GLY GLY ARG GLU ALA SER GLY ILE SEQRES 3 y 77 LEU LYS GLY PHE ASP PRO LEU LEU ASN LEU VAL LEU ASP SEQRES 4 y 77 GLY THR ILE GLU TYR MET ARG ASP PRO ASP ASP GLN TYR SEQRES 5 y 77 LYS LEU THR GLU ASP THR ARG GLN LEU GLY LEU VAL VAL SEQRES 6 y 77 CYS ARG GLY THR SER VAL VAL LEU ILE CYS PRO GLN ATOM 1 N SER y 11 379.128 328.971 347.438 1.00102.76 ATOM 2 CA SER y 11 379.715 329.469 348.679 1.00 97.65 ATOM 3 C SER y 11 381.236 329.315 348.682 1.00 98.80 ATOM 4 O SER y 11 381.788 328.477 347.956 1.00102.94 ATOM 5 N ILE y 12 381.907 330.129 349.499 1.00 90.82 ATOM 6 CA ILE y 12 383.369 330.158 349.532 1.00 93.28 ATOM 7 C ILE y 12 383.970 329.144 350.492 1.00 92.95 ATOM 8 O ILE y 12 385.141 328.780 350.368 1.00 96.84 ATOM 9 N LEU y 13 383.172 328.700 351.457 1.00 78.38 ATOM 10 CA LEU y 13 383.620 327.692 352.404 1.00 78.75 ATOM 11 C LEU y 13 382.897 326.374 352.136 1.00 80.44 ATOM 12 O LEU y 13 381.666 326.308 352.199 1.00 77.21 ATOM 13 N ASP y 14 383.655 325.328 351.829 1.00120.64 ATOM 14 CA ASP y 14 383.055 324.016 351.616 1.00122.13 ATOM 15 C ASP y 14 382.880 323.274 352.945 1.00118.22 ATOM 16 O ASP y 14 383.785 322.598 353.422 1.00121.03 ATOM 17 N LEU y 15 381.698 323.419 353.533 1.00 93.77 ATOM 18 CA LEU y 15 381.361 322.830 354.826 1.00 90.17 ATOM 19 C LEU y 15 381.305 321.295 354.820 1.00 92.28 ATOM 20 O LEU y 15 381.194 320.652 355.874 1.00 91.42 ATOM 21 N SER y 16 381.395 320.718 353.628 1.00 90.84 ATOM 22 CA SER y 16 381.272 319.277 353.447 1.00 95.24 ATOM 23 C SER y 16 382.365 318.498 354.169 1.00 98.63 ATOM 24 O SER y 16 382.112 317.437 354.731 1.00100.58 ATOM 25 N LYS y 17 383.574 319.051 354.171 1.00108.80 ATOM 26 CA LYS y 17 384.713 318.441 354.851 1.00112.48 ATOM 27 C LYS y 17 384.506 318.348 356.362 1.00109.55 ATOM 28 O LYS y 17 384.915 317.380 356.998 1.00113.55 ATOM 29 N TYR y 18 383.942 319.417 356.910 1.00 95.82 ATOM 30 CA TYR y 18 383.749 319.597 358.344 1.00 92.97 ATOM 31 C TYR y 18 382.798 318.598 358.989 1.00 92.70 ATOM 32 O TYR y 18 382.994 318.197 360.134 1.00 93.55 ATOM 33 N ILE y 19 381.810 318.148 358.224 1.00 85.42 ATOM 34 CA ILE y 19 380.738 317.332 358.771 1.00 85.33 ATOM 35 C ILE y 19 381.310 316.075 359.398 1.00 90.72 ATOM 36 O ILE y 19 382.207 315.441 358.844 1.00 95.73 ATOM 37 N ASP y 20 380.788 315.726 360.567 1.00115.66 ATOM 38 CA ASP y 20 381.345 314.643 361.358 1.00120.83 ATOM 39 C ASP y 20 382.665 315.109 361.965 1.00121.81 ATOM 40 O ASP y 20 383.489 314.302 362.389 1.00127.11 ATOM 41 N LYS y 21 382.863 316.422 361.975 1.00119.23 ATOM 42 CA LYS y 21 384.066 317.017 362.541 1.00120.22 ATOM 43 C LYS y 21 383.664 318.034 363.597 1.00116.57 ATOM 44 O LYS y 21 382.570 318.596 363.541 1.00112.57 ATOM 45 N THR y 22 384.543 318.269 364.566 1.00 99.13 ATOM 46 CA THR y 22 384.216 319.178 365.650 1.00 98.35 ATOM 47 C THR y 22 384.625 320.608 365.311 1.00 97.18 ATOM 48 O THR y 22 385.784 320.886 365.040 1.00 99.04 ATOM 49 N ILE y 23 383.658 321.514 365.331 1.00 86.37 ATOM 50 CA ILE y 23 383.883 322.895 364.932 1.00 84.95 ATOM 51 C ILE y 23 383.617 323.894 366.057 1.00 84.83 ATOM 52 O ILE y 23 382.868 323.617 367.011 1.00 84.86 ATOM 53 N ARG y 24 384.252 325.053 365.918 1.00 73.20 ATOM 54 CA ARG y 24 384.199 326.150 366.872 1.00 72.97 ATOM 55 C ARG y 24 383.635 327.436 366.231 1.00 70.12 ATOM 56 O ARG y 24 384.282 328.078 365.397 1.00 69.90 ATOM 57 N VAL y 25 382.431 327.812 366.642 1.00 64.10 ATOM 58 CA VAL y 25 381.707 328.914 366.037 1.00 60.47 ATOM 59 C VAL y 25 381.509 330.054 367.011 1.00 61.77 ATOM 60 O VAL y 25 380.951 329.877 368.081 1.00 63.26 ATOM 61 N LYS y 26 381.977 331.228 366.623 1.00 64.63 ATOM 62 CA LYS y 26 381.672 332.455 367.348 1.00 65.85 ATOM 63 C LYS y 26 380.387 333.065 366.780 1.00 61.97 ATOM 64 O LYS y 26 380.166 333.069 365.549 1.00 58.19 ATOM 65 N PHE y 27 379.571 333.584 367.691 1.00 56.17 ATOM 66 CA PHE y 27 378.273 334.149 367.363 1.00 53.48 ATOM 67 C PHE y 27 378.204 335.629 367.688 1.00 55.47 ATOM 68 O PHE y 27 378.793 336.091 368.647 1.00 59.22 ATOM 69 N GLN y 28 377.457 336.382 366.907 1.00 94.81 ATOM 70 CA GLN y 28 377.310 337.778 367.241 1.00 97.25 ATOM 71 C GLN y 28 376.646 337.934 368.595 1.00100.70 ATOM 72 O GLN y 28 375.572 337.390 368.836 1.00100.41 ATOM 73 N GLY y 29 377.299 338.675 369.478 1.00 68.72 ATOM 74 CA GLY y 29 376.775 338.930 370.806 1.00 72.57 ATOM 75 C GLY y 29 377.619 338.291 371.888 1.00 75.90 ATOM 76 O GLY y 29 377.213 338.273 373.052 1.00 79.12 ATOM 77 N GLY y 30 378.777 337.750 371.507 1.00 85.70 ATOM 78 CA GLY y 30 379.752 337.257 372.465 1.00 89.11 ATOM 79 C GLY y 30 379.533 335.831 372.924 1.00 89.09 ATOM 80 O GLY y 30 379.808 335.490 374.075 1.00 92.74 ATOM 81 N ARG y 31 379.033 334.996 372.025 1.00 71.03 ATOM 82 CA ARG y 31 378.764 333.602 372.336 1.00 71.09 ATOM 83 C ARG y 31 379.744 332.676 371.646 1.00 69.48 ATOM 84 O ARG y 31 380.075 332.857 370.471 1.00 66.71 ATOM 85 N GLU y 32 380.215 331.672 372.368 1.00 64.34 ATOM 86 CA GLU y 32 381.002 330.655 371.711 1.00 62.94 ATOM 87 C GLU y 32 380.216 329.362 371.704 1.00 61.65 ATOM 88 O GLU y 32 379.515 329.049 372.658 1.00 63.38 ATOM 89 N ALA y 33 380.305 328.618 370.617 1.00 52.03 ATOM 90 CA ALA y 33 379.685 327.314 370.584 1.00 51.65 ATOM 91 C ALA y 33 380.694 326.336 369.996 1.00 52.49 ATOM 92 O ALA y 33 381.373 326.677 369.016 1.00 52.21 ATOM 93 N SER y 34 380.823 325.157 370.621 1.00 65.27 ATOM 94 CA SER y 34 381.606 324.065 370.052 1.00 66.07 ATOM 95 C SER y 34 380.743 322.826 369.885 1.00 65.94 ATOM 96 O SER y 34 380.045 322.414 370.822 1.00 67.64 ATOM 97 N GLY y 35 380.778 322.234 368.694 1.00 83.17 ATOM 98 CA GLY y 35 379.895 321.116 368.430 1.00 81.93 ATOM 99 C GLY y 35 380.353 320.256 367.284 1.00 81.06 ATOM 100 O GLY y 35 381.397 320.503 366.702 1.00 81.94 ATOM 101 N ILE y 36 379.568 319.235 366.966 1.00 64.03 ATOM 102 CA ILE y 36 379.896 318.344 365.866 1.00 64.93 ATOM 103 C ILE y 36 378.998 318.631 364.681 1.00 62.50 ATOM 104 O ILE y 36 377.763 318.529 364.812 1.00 61.28 ATOM 105 N LEU y 37 379.604 318.997 363.547 1.00 75.88 ATOM 106 CA LEU y 37 378.836 319.472 362.399 1.00 72.18 ATOM 107 C LEU y 37 378.038 318.374 361.729 1.00 74.20 ATOM 108 O LEU y 37 378.591 317.519 361.036 1.00 78.25 ATOM 109 N LYS y 38 376.725 318.433 361.909 1.00 78.01 ATOM 110 CA LYS y 38 375.845 317.366 361.479 1.00 80.79 ATOM 111 C LYS y 38 375.138 317.748 360.193 1.00 79.69 ATOM 112 O LYS y 38 374.829 316.885 359.357 1.00 83.61 ATOM 113 N GLY y 39 374.879 319.047 360.053 1.00 76.93 ATOM 114 CA GLY y 39 374.174 319.572 358.907 1.00 76.24 ATOM 115 C GLY y 39 374.374 321.067 358.771 1.00 72.20 ATOM 116 O GLY y 39 374.728 321.742 359.740 1.00 69.76 ATOM 117 N PHE y 40 374.122 321.582 357.566 1.00 66.23 ATOM 118 CA PHE y 40 374.304 322.993 357.254 1.00 64.25 ATOM 119 C PHE y 40 373.432 323.398 356.066 1.00 66.33 ATOM 120 O PHE y 40 372.861 322.534 355.402 1.00 69.31 ATOM 121 N ASP y 41 373.302 324.700 355.805 1.00 65.43 ATOM 122 CA ASP y 41 372.655 325.133 354.563 1.00 69.18 ATOM 123 C ASP y 41 373.422 326.217 353.796 1.00 70.21 ATOM 124 O ASP y 41 374.517 326.615 354.189 1.00 67.69 ATOM 125 N PRO y 42 372.838 326.682 352.696 1.00 91.92 ATOM 126 CA PRO y 42 373.478 327.687 351.847 1.00 94.24 ATOM 127 C PRO y 42 373.507 329.053 352.534 1.00 91.23 ATOM 128 O PRO y 42 374.365 329.887 352.247 1.00 91.11 ATOM 129 N LEU y 43 372.568 329.257 353.458 1.00 85.09 ATOM 130 CA LEU y 43 372.479 330.479 354.241 1.00 83.03 ATOM 131 C LEU y 43 373.414 330.461 355.416 1.00 77.95 ATOM 132 O LEU y 43 373.467 331.435 356.163 1.00 76.53 ATOM 133 N LEU y 44 374.097 329.335 355.595 1.00 94.01 ATOM 134 CA LEU y 44 375.047 329.127 356.681 1.00 90.79 ATOM 135 C LEU y 44 374.409 328.836 358.041 1.00 88.82 ATOM 136 O LEU y 44 375.091 328.838 359.056 1.00 87.44 ATOM 137 N ASN y 45 373.112 328.557 358.072 1.00 52.63 ATOM 138 CA ASN y 45 372.541 327.903 359.248 1.00 52.07 ATOM 139 C ASN y 45 373.213 326.544 359.448 1.00 51.61 ATOM 140 O ASN y 45 373.488 325.835 358.475 1.00 52.67 ATOM 141 N LEU y 46 373.476 326.184 360.705 1.00 58.60 ATOM 142 CA LEU y 46 374.078 324.885 361.027 1.00 59.46 ATOM 143 C LEU y 46 373.253 324.007 361.955 1.00 60.69 ATOM 144 O LEU y 46 372.400 324.487 362.719 1.00 60.91 ATOM 145 N VAL y 47 373.543 322.713 361.883 1.00 69.26 ATOM 146 CA VAL y 47 373.042 321.742 362.838 1.00 71.14 ATOM 147 C VAL y 47 374.237 321.173 363.596 1.00 73.06 ATOM 148 O VAL y 47 375.093 320.510 363.003 1.00 74.17 ATOM 149 N LEU y 48 374.301 321.417 364.901 1.00 60.27 ATOM 150 CA LEU y 48 375.447 320.948 365.680 1.00 63.40 ATOM 151 C LEU y 48 375.067 319.855 366.655 1.00 66.68 ATOM 152 O LEU y 48 373.932 319.811 367.141 1.00 66.57 ATOM 153 N ASP y 49 376.022 318.978 366.950 1.00 89.98 ATOM 154 CA ASP y 49 375.776 317.884 367.878 1.00 93.58 ATOM 155 C ASP y 49 376.717 317.980 369.072 1.00 97.44 ATOM 156 O ASP y 49 377.860 318.402 368.926 1.00 98.33 ATOM 157 N GLY y 50 376.225 317.593 370.247 1.00 86.17 ATOM 158 CA GLY y 50 376.994 317.679 371.488 1.00 90.55 ATOM 159 C GLY y 50 377.428 319.109 371.757 1.00 90.64 ATOM 160 O GLY y 50 378.585 319.388 372.077 1.00 93.20 ATOM 161 N THR y 51 376.456 320.003 371.648 1.00 85.63 ATOM 162 CA THR y 51 376.700 321.429 371.639 1.00 85.25 ATOM 163 C THR y 51 377.066 321.922 373.020 1.00 89.62 ATOM 164 O THR y 51 376.301 321.767 373.969 1.00 91.79 ATOM 165 N ILE y 52 378.239 322.522 373.143 1.00 81.47 ATOM 166 CA ILE y 52 378.547 323.206 374.384 1.00 83.87 ATOM 167 C ILE y 52 378.771 324.688 374.131 1.00 81.59 ATOM 168 O ILE y 52 379.590 325.085 373.301 1.00 79.76 ATOM 169 N GLU y 53 378.000 325.492 374.846 1.00 91.26 ATOM 170 CA GLU y 53 378.020 326.930 374.691 1.00 89.99 ATOM 171 C GLU y 53 378.848 327.579 375.785 1.00 93.24 ATOM 172 O GLU y 53 378.503 327.507 376.958 1.00 96.27 ATOM 173 N TYR y 54 379.948 328.209 375.392 1.00 79.44 ATOM 174 CA TYR y 54 380.779 328.971 376.318 1.00 83.05 ATOM 175 C TYR y 54 380.347 330.428 376.297 1.00 83.30 ATOM 176 O TYR y 54 380.394 331.101 375.259 1.00 81.54 ATOM 177 N MET y 55 379.908 330.901 377.455 1.00128.64 ATOM 178 CA MET y 55 379.221 332.174 377.547 1.00129.09 ATOM 179 C MET y 55 380.092 333.223 378.220 1.00132.52 ATOM 180 O MET y 55 380.231 334.338 377.723 1.00132.33 ATOM 181 N THR y 68 380.821 327.252 381.096 1.00107.31 ATOM 182 CA THR y 68 380.334 326.009 380.520 1.00105.91 ATOM 183 C THR y 68 378.815 325.954 380.468 1.00104.25 ATOM 184 O THR y 68 378.144 326.074 381.491 1.00106.77 ATOM 185 N ARG y 69 378.275 325.709 379.279 1.00102.88 ATOM 186 CA ARG y 69 376.842 325.481 379.110 1.00101.89 ATOM 187 C ARG y 69 376.617 324.362 378.094 1.00100.80 ATOM 188 O ARG y 69 377.077 324.457 376.957 1.00 99.16 ATOM 189 N GLN y 70 375.921 323.300 378.499 1.00 81.77 ATOM 190 CA GLN y 70 375.748 322.163 377.613 1.00 80.63 ATOM 191 C GLN y 70 374.332 322.084 377.073 1.00 79.20 ATOM 192 O GLN y 70 373.367 322.003 377.831 1.00 80.25 ATOM 193 N LEU y 71 374.223 322.085 375.752 1.00 80.42 ATOM 194 CA LEU y 71 372.957 321.811 375.085 1.00 76.75 ATOM 195 C LEU y 71 373.232 320.560 374.261 1.00 74.52 ATOM 196 O LEU y 71 374.292 319.964 374.394 1.00 76.59 ATOM 197 N GLY y 72 372.319 320.144 373.404 1.00 84.47 ATOM 198 CA GLY y 72 372.569 318.909 372.686 1.00 83.32 ATOM 199 C GLY y 72 372.695 319.050 371.186 1.00 78.80 ATOM 200 O GLY y 72 373.716 319.490 370.650 1.00 77.69 ATOM 201 N LEU y 73 371.641 318.629 370.507 1.00 74.72 ATOM 202 CA LEU y 73 371.542 318.787 369.083 1.00 71.08 ATOM 203 C LEU y 73 370.892 320.155 368.862 1.00 68.65 ATOM 204 O LEU y 73 369.680 320.323 369.064 1.00 69.39 ATOM 205 N VAL y 74 371.693 321.133 368.457 1.00 61.21 ATOM 206 CA VAL y 74 371.176 322.491 368.262 1.00 59.51 ATOM 207 C VAL y 74 371.137 322.948 366.807 1.00 55.83 ATOM 208 O VAL y 74 371.750 322.358 365.913 1.00 54.51 ATOM 209 N VAL y 75 370.388 324.003 366.574 1.00 50.19 ATOM 210 CA VAL y 75 370.468 324.676 365.298 1.00 47.68 ATOM 211 C VAL y 75 370.925 326.096 365.530 1.00 47.06 ATOM 212 O VAL y 75 370.407 326.805 366.404 1.00 49.28 ATOM 213 N CYS y 76 371.907 326.493 364.732 1.00 52.81 ATOM 214 CA CYS y 76 372.551 327.786 364.845 1.00 52.48 ATOM 215 C CYS y 76 372.173 328.645 363.646 1.00 51.31 ATOM 216 O CYS y 76 372.338 328.216 362.496 1.00 50.15 ATOM 217 N ARG y 77 371.652 329.843 363.909 1.00 60.25 ATOM 218 CA ARG y 77 371.215 330.752 362.845 1.00 60.47 ATOM 219 C ARG y 77 372.396 331.341 362.078 1.00 58.81 ATOM 220 O ARG y 77 373.212 332.042 362.640 1.00 58.74 ATOM 221 N GLY y 78 372.464 331.061 360.784 1.00 67.46 ATOM 222 CA GLY y 78 373.580 331.488 359.965 1.00 66.54 ATOM 223 C GLY y 78 373.804 332.986 359.943 1.00 67.51 ATOM 224 O GLY y 78 374.921 333.475 359.743 1.00 67.16 ATOM 225 N THR y 79 372.731 333.730 360.149 1.00 60.09 ATOM 226 CA THR y 79 372.783 335.180 360.025 1.00 61.70 ATOM 227 C THR y 79 373.541 335.843 361.167 1.00 61.41 ATOM 228 O THR y 79 373.939 337.003 361.069 1.00 63.00 ATOM 229 N SER y 80 373.734 335.116 362.262 1.00 51.82 ATOM 230 CA SER y 80 374.509 335.658 363.375 1.00 53.35 ATOM 231 C SER y 80 375.814 334.878 363.510 1.00 52.78 ATOM 232 O SER y 80 376.610 335.104 364.423 1.00 55.03 ATOM 233 N VAL y 81 376.017 333.961 362.570 1.00 57.13 ATOM 234 CA VAL y 81 377.261 333.221 362.517 1.00 57.18 ATOM 235 C VAL y 81 378.397 334.140 362.099 1.00 58.61 ATOM 236 O VAL y 81 378.530 334.529 360.934 1.00 58.23 ATOM 237 N VAL y 82 379.228 334.442 363.083 1.00 55.51 ATOM 238 CA VAL y 82 380.261 335.456 362.983 1.00 57.98 ATOM 239 C VAL y 82 381.648 334.870 362.626 1.00 59.63 ATOM 240 O VAL y 82 382.386 335.462 361.838 1.00 60.19 ATOM 241 N LEU y 83 381.983 333.700 363.169 1.00 56.29 ATOM 242 CA LEU y 83 383.242 333.051 362.770 1.00 58.33 ATOM 243 C LEU y 83 383.209 331.535 362.971 1.00 58.74 ATOM 244 O LEU y 83 382.430 331.031 363.777 1.00 58.28 ATOM 245 N ILE y 84 384.051 330.809 362.241 1.00 71.87 ATOM 246 CA ILE y 84 384.014 329.350 362.279 1.00 72.83 ATOM 247 C ILE y 84 385.375 328.720 362.043 1.00 77.17 ATOM 248 O ILE y 84 385.922 328.816 360.946 1.00 77.87 ATOM 249 N CYS y 85 385.914 328.047 363.049 1.00 71.26 ATOM 250 CA CYS y 85 387.153 327.294 362.858 1.00 74.89 ATOM 251 C CYS y 85 386.934 325.840 363.188 1.00 76.46 ATOM 252 O CYS y 85 385.839 325.441 363.549 1.00 74.96 ATOM 253 N PRO y 86 387.976 325.035 363.082 1.00 89.14 ATOM 254 CA PRO y 86 387.833 323.631 363.432 1.00 90.31 ATOM 255 C PRO y 86 388.042 323.438 364.936 1.00 91.77 ATOM 256 O PRO y 86 388.000 324.400 365.701 1.00 91.10 ATOM 257 N GLN y 87 388.258 322.196 365.359 1.00122.40 ATOM 258 CA GLN y 87 388.555 321.896 366.756 1.00124.73 ATOM 259 C GLN y 87 389.240 320.536 366.889 1.00128.14 ATOM 260 O GLN y 87 390.363 320.339 366.416 1.00130.35 TER