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: 9; COMPND 2 MOLECULE: Small nuclear ribonucleoprotein-associated proteins B and COMPND 3 CHAIN: f, i, U; 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 f 49 REMARK 465 LYS f 50 REMARK 465 ILE f 51 REMARK 465 LYS f 52 REMARK 465 PRO f 53 REMARK 465 LYS f 54 REMARK 465 ASN f 55 REMARK 465 SER f 56 REMARK 465 LYS f 57 REMARK 465 GLN f 58 REMARK 465 ALA f 59 REMARK 465 GLU f 60 REMARK 465 ARG f 61 REMARK 465 GLU f 62 REMARK 465 GLU f 63 REMARK 465 LYS f 64 DBREF 6AH0 f 1 231 UNP P14678 RSMB_HUMAN 1 231 SEQRES 1 f 80 SER LYS MET LEU GLN HIS ILE ASP TYR ARG MET ARG CYS SEQRES 2 f 80 ILE LEU GLN ASP GLY ARG ILE PHE ILE GLY THR PHE LYS SEQRES 3 f 80 ALA PHE ASP LYS HIS MET ASN LEU ILE LEU CYS ASP CYS SEQRES 4 f 80 ASP GLU PHE ARG LYS ILE LYS PRO LYS ASN SER LYS GLN SEQRES 5 f 80 ALA GLU ARG GLU GLU LYS ARG VAL LEU GLY LEU VAL LEU SEQRES 6 f 80 LEU ARG GLY GLU ASN LEU VAL SER MET THR VAL GLU GLY SEQRES 7 f 80 PRO PRO ATOM 1 N SER f 7 233.080 272.040 161.188 1.00 50.00 ATOM 2 CA SER f 7 233.370 272.664 159.902 1.00 50.00 ATOM 3 C SER f 7 233.192 274.176 159.975 1.00 50.00 ATOM 4 O SER f 7 233.784 274.840 160.826 1.00 50.00 ATOM 5 N LYS f 8 232.369 274.717 159.074 1.00 50.00 ATOM 6 CA LYS f 8 232.124 276.154 159.060 1.00 50.00 ATOM 7 C LYS f 8 231.177 276.586 160.171 1.00 50.00 ATOM 8 O LYS f 8 231.081 277.782 160.467 1.00 50.00 ATOM 9 N MET f 9 230.474 275.638 160.794 1.00 50.00 ATOM 10 CA MET f 9 229.563 275.978 161.880 1.00 50.00 ATOM 11 C MET f 9 230.299 276.360 163.156 1.00 50.00 ATOM 12 O MET f 9 229.721 277.041 164.009 1.00 50.00 ATOM 13 N LEU f 10 231.555 275.943 163.307 1.00 50.00 ATOM 14 CA LEU f 10 232.335 276.276 164.492 1.00 50.00 ATOM 15 C LEU f 10 232.860 277.704 164.478 1.00 50.00 ATOM 16 O LEU f 10 233.108 278.267 165.550 1.00 50.00 ATOM 17 N GLN f 11 233.031 278.303 163.298 1.00 50.00 ATOM 18 CA GLN f 11 233.525 279.673 163.223 1.00 50.00 ATOM 19 C GLN f 11 232.429 280.682 163.545 1.00 50.00 ATOM 20 O GLN f 11 232.718 281.787 164.019 1.00 50.00 ATOM 21 N HIS f 12 231.169 280.323 163.296 1.00 50.00 ATOM 22 CA HIS f 12 230.058 281.225 163.567 1.00 50.00 ATOM 23 C HIS f 12 229.488 281.056 164.968 1.00 50.00 ATOM 24 O HIS f 12 228.508 281.729 165.308 1.00 50.00 ATOM 25 N ILE f 13 230.073 280.176 165.785 1.00 50.00 ATOM 26 CA ILE f 13 229.568 279.972 167.136 1.00 50.00 ATOM 27 C ILE f 13 229.901 281.184 167.995 1.00 50.00 ATOM 28 O ILE f 13 230.960 281.803 167.846 1.00 50.00 ATOM 29 N ASP f 14 228.982 281.521 168.902 1.00 50.00 ATOM 30 CA ASP f 14 229.137 282.660 169.811 1.00 50.00 ATOM 31 C ASP f 14 229.360 283.958 169.034 1.00 50.00 ATOM 32 O ASP f 14 230.240 284.759 169.353 1.00 50.00 ATOM 33 N TYR f 15 228.546 284.160 168.001 1.00 50.00 ATOM 34 CA TYR f 15 228.622 285.345 167.161 1.00 50.00 ATOM 35 C TYR f 15 227.218 285.835 166.843 1.00 50.00 ATOM 36 O TYR f 15 226.248 285.074 166.910 1.00 50.00 ATOM 37 N ARG f 16 227.116 287.117 166.502 1.00 50.00 ATOM 38 CA ARG f 16 225.832 287.723 166.166 1.00 50.00 ATOM 39 C ARG f 16 225.649 287.689 164.653 1.00 50.00 ATOM 40 O ARG f 16 226.353 288.390 163.917 1.00 50.00 ATOM 41 N MET f 17 224.704 286.879 164.186 1.00 50.00 ATOM 42 CA MET f 17 224.411 286.751 162.770 1.00 50.00 ATOM 43 C MET f 17 223.093 287.450 162.441 1.00 50.00 ATOM 44 O MET f 17 222.428 288.029 163.303 1.00 50.00 ATOM 45 N ARG f 18 222.714 287.390 161.165 1.00 50.00 ATOM 46 CA ARG f 18 221.450 287.940 160.685 1.00 50.00 ATOM 47 C ARG f 18 220.729 286.849 159.907 1.00 50.00 ATOM 48 O ARG f 18 221.209 286.414 158.855 1.00 50.00 ATOM 49 N CYS f 19 219.585 286.410 160.420 1.00 50.00 ATOM 50 CA CYS f 19 218.818 285.334 159.811 1.00 50.00 ATOM 51 C CYS f 19 217.627 285.900 159.049 1.00 50.00 ATOM 52 O CYS f 19 216.888 286.741 159.564 1.00 50.00 ATOM 53 N ILE f 20 217.450 285.429 157.816 1.00 50.00 ATOM 54 CA ILE f 20 216.342 285.835 156.961 1.00 50.00 ATOM 55 C ILE f 20 215.404 284.648 156.804 1.00 50.00 ATOM 56 O ILE f 20 215.857 283.510 156.637 1.00 50.00 ATOM 57 N LEU f 21 214.101 284.914 156.863 1.00 50.00 ATOM 58 CA LEU f 21 213.098 283.873 156.729 1.00 50.00 ATOM 59 C LEU f 21 212.503 283.893 155.322 1.00 50.00 ATOM 60 O LEU f 21 212.889 284.690 154.464 1.00 50.00 ATOM 61 N GLN f 22 211.548 282.997 155.081 1.00 50.00 ATOM 62 CA GLN f 22 210.871 282.919 153.795 1.00 50.00 ATOM 63 C GLN f 22 209.820 284.004 153.606 1.00 50.00 ATOM 64 O GLN f 22 209.436 284.280 152.464 1.00 50.00 ATOM 65 N ASP f 23 209.351 284.623 154.686 1.00 50.00 ATOM 66 CA ASP f 23 208.346 285.673 154.616 1.00 50.00 ATOM 67 C ASP f 23 208.955 287.069 154.537 1.00 50.00 ATOM 68 O ASP f 23 208.212 288.056 154.517 1.00 50.00 ATOM 69 N GLY f 24 210.281 287.172 154.492 1.00 50.00 ATOM 70 CA GLY f 24 210.931 288.466 154.427 1.00 50.00 ATOM 71 C GLY f 24 211.335 289.050 155.759 1.00 50.00 ATOM 72 O GLY f 24 211.892 290.151 155.792 1.00 50.00 ATOM 73 N ARG f 25 211.075 288.351 156.861 1.00 50.00 ATOM 74 CA ARG f 25 211.443 288.846 158.179 1.00 50.00 ATOM 75 C ARG f 25 212.911 288.562 158.464 1.00 50.00 ATOM 76 O ARG f 25 213.415 287.469 158.189 1.00 50.00 ATOM 77 N ILE f 26 213.598 289.558 159.018 1.00 50.00 ATOM 78 CA ILE f 26 215.012 289.456 159.357 1.00 50.00 ATOM 79 C ILE f 26 215.139 289.287 160.864 1.00 50.00 ATOM 80 O ILE f 26 214.431 289.946 161.636 1.00 50.00 ATOM 81 N PHE f 27 216.043 288.403 161.280 1.00 50.00 ATOM 82 CA PHE f 27 216.294 288.124 162.690 1.00 50.00 ATOM 83 C PHE f 27 217.764 288.399 162.979 1.00 50.00 ATOM 84 O PHE f 27 218.644 287.730 162.428 1.00 50.00 ATOM 85 N ILE f 28 218.025 289.377 163.841 1.00 50.00 ATOM 86 CA ILE f 28 219.381 289.757 164.217 1.00 50.00 ATOM 87 C ILE f 28 219.592 289.384 165.676 1.00 50.00 ATOM 88 O ILE f 28 218.998 289.991 166.575 1.00 50.00 ATOM 89 N GLY f 29 220.438 288.387 165.916 1.00 50.00 ATOM 90 CA GLY f 29 220.712 287.943 167.270 1.00 50.00 ATOM 91 C GLY f 29 222.009 287.170 167.316 1.00 50.00 ATOM 92 O GLY f 29 222.608 286.851 166.285 1.00 50.00 ATOM 93 N THR f 30 222.438 286.874 168.540 1.00 50.00 ATOM 94 CA THR f 30 223.675 286.130 168.767 1.00 50.00 ATOM 95 C THR f 30 223.408 284.654 168.500 1.00 50.00 ATOM 96 O THR f 30 222.531 284.045 169.118 1.00 50.00 ATOM 97 N PHE f 31 224.170 284.072 167.578 1.00 50.00 ATOM 98 CA PHE f 31 224.015 282.658 167.265 1.00 50.00 ATOM 99 C PHE f 31 224.648 281.808 168.360 1.00 50.00 ATOM 100 O PHE f 31 225.834 281.958 168.668 1.00 50.00 ATOM 101 N LYS f 32 223.851 280.920 168.951 1.00 50.00 ATOM 102 CA LYS f 32 224.334 280.070 170.031 1.00 50.00 ATOM 103 C LYS f 32 224.555 278.642 169.548 1.00 50.00 ATOM 104 O LYS f 32 225.698 278.204 169.386 1.00 50.00 ATOM 105 N ALA f 33 223.467 277.912 169.309 1.00 50.00 ATOM 106 CA ALA f 33 223.561 276.516 168.903 1.00 50.00 ATOM 107 C ALA f 33 222.700 276.286 167.672 1.00 50.00 ATOM 108 O ALA f 33 221.743 277.029 167.430 1.00 50.00 ATOM 109 N PHE f 34 223.048 275.260 166.899 1.00 50.00 ATOM 110 CA PHE f 34 222.325 274.872 165.697 1.00 50.00 ATOM 111 C PHE f 34 222.209 273.352 165.661 1.00 50.00 ATOM 112 O PHE f 34 222.596 272.655 166.604 1.00 50.00 ATOM 113 N ASP f 35 221.666 272.837 164.560 1.00 50.00 ATOM 114 CA ASP f 35 221.495 271.403 164.380 1.00 50.00 ATOM 115 C ASP f 35 221.743 271.058 162.916 1.00 50.00 ATOM 116 O ASP f 35 222.056 271.926 162.095 1.00 50.00 ATOM 117 N LYS f 36 221.605 269.770 162.592 1.00 50.00 ATOM 118 CA LYS f 36 221.781 269.333 161.211 1.00 50.00 ATOM 119 C LYS f 36 220.617 269.785 160.339 1.00 50.00 ATOM 120 O LYS f 36 220.715 269.791 159.107 1.00 50.00 ATOM 121 N HIS f 37 219.505 270.172 160.962 1.00 50.00 ATOM 122 CA HIS f 37 218.342 270.684 160.253 1.00 50.00 ATOM 123 C HIS f 37 218.386 272.194 160.066 1.00 50.00 ATOM 124 O HIS f 37 217.399 272.769 159.592 1.00 50.00 ATOM 125 N MET f 38 219.491 272.840 160.448 1.00 50.00 ATOM 126 CA MET f 38 219.670 274.283 160.329 1.00 50.00 ATOM 127 C MET f 38 218.656 275.037 161.179 1.00 50.00 ATOM 128 O MET f 38 218.085 276.039 160.733 1.00 50.00 ATOM 129 N ASN f 39 218.431 274.569 162.404 1.00 50.00 ATOM 130 CA ASN f 39 217.565 275.284 163.331 1.00 50.00 ATOM 131 C ASN f 39 218.401 276.209 164.204 1.00 50.00 ATOM 132 O ASN f 39 219.200 275.752 165.027 1.00 50.00 ATOM 133 N LEU f 40 218.215 277.513 164.027 1.00 50.00 ATOM 134 CA LEU f 40 219.019 278.521 164.699 1.00 50.00 ATOM 135 C LEU f 40 218.376 278.935 166.016 1.00 50.00 ATOM 136 O LEU f 40 217.176 279.214 166.083 1.00 50.00 ATOM 137 N ILE f 41 219.194 278.970 167.063 1.00 50.00 ATOM 138 CA ILE f 41 218.786 279.453 168.378 1.00 50.00 ATOM 139 C ILE f 41 219.520 280.768 168.602 1.00 50.00 ATOM 140 O ILE f 41 220.744 280.788 168.777 1.00 50.00 ATOM 141 N LEU f 42 218.778 281.870 168.601 1.00 50.00 ATOM 142 CA LEU f 42 219.356 283.203 168.703 1.00 50.00 ATOM 143 C LEU f 42 219.138 283.772 170.097 1.00 50.00 ATOM 144 O LEU f 42 218.076 283.586 170.699 1.00 50.00 ATOM 145 N CYS f 43 220.151 284.467 170.605 1.00 50.00 ATOM 146 CA CYS f 43 220.089 285.136 171.896 1.00 50.00 ATOM 147 C CYS f 43 219.978 286.639 171.684 1.00 50.00 ATOM 148 O CYS f 43 220.702 287.212 170.863 1.00 50.00 ATOM 149 N ASP f 44 219.069 287.267 172.431 1.00 50.00 ATOM 150 CA ASP f 44 218.809 288.704 172.319 1.00 50.00 ATOM 151 C ASP f 44 218.428 289.083 170.890 1.00 50.00 ATOM 152 O ASP f 44 218.922 290.064 170.329 1.00 50.00 ATOM 153 N CYS f 45 217.537 288.293 170.298 1.00 50.00 ATOM 154 CA CYS f 45 217.103 288.545 168.931 1.00 50.00 ATOM 155 C CYS f 45 216.137 289.722 168.878 1.00 50.00 ATOM 156 O CYS f 45 215.341 289.946 169.794 1.00 50.00 ATOM 157 N ASP f 46 216.214 290.479 167.786 1.00 50.00 ATOM 158 CA ASP f 46 215.362 291.643 167.583 1.00 50.00 ATOM 159 C ASP f 46 214.749 291.575 166.193 1.00 50.00 ATOM 160 O ASP f 46 215.473 291.582 165.192 1.00 50.00 ATOM 161 N GLU f 47 213.424 291.510 166.136 1.00 50.00 ATOM 162 CA GLU f 47 212.707 291.451 164.874 1.00 50.00 ATOM 163 C GLU f 47 212.641 292.831 164.228 1.00 50.00 ATOM 164 O GLU f 47 212.692 293.864 164.898 1.00 50.00 ATOM 165 N PHE f 48 212.527 292.833 162.903 1.00 50.00 ATOM 166 CA PHE f 48 212.454 294.076 162.142 1.00 50.00 ATOM 167 C PHE f 48 211.052 294.293 161.582 1.00 50.00 ATOM 168 O PHE f 48 210.513 293.437 160.881 1.00 50.00 ATOM 169 N ARG f 65 209.605 294.761 167.749 1.00 50.00 ATOM 170 CA ARG f 65 209.454 293.952 168.953 1.00 50.00 ATOM 171 C ARG f 65 210.733 293.180 169.258 1.00 50.00 ATOM 172 O ARG f 65 211.377 292.647 168.355 1.00 50.00 ATOM 173 N VAL f 66 211.097 293.124 170.535 1.00 50.00 ATOM 174 CA VAL f 66 212.300 292.426 170.975 1.00 50.00 ATOM 175 C VAL f 66 211.899 291.013 171.386 1.00 50.00 ATOM 176 O VAL f 66 211.191 290.821 172.378 1.00 50.00 ATOM 177 N LEU f 67 212.352 290.023 170.620 1.00 50.00 ATOM 178 CA LEU f 67 212.039 288.629 170.907 1.00 50.00 ATOM 179 C LEU f 67 212.932 288.084 172.015 1.00 50.00 ATOM 180 O LEU f 67 212.504 287.233 172.803 1.00 50.00 ATOM 181 N GLY f 68 214.169 288.568 172.084 1.00 50.00 ATOM 182 CA GLY f 68 215.126 288.054 173.043 1.00 50.00 ATOM 183 C GLY f 68 215.540 286.633 172.726 1.00 50.00 ATOM 184 O GLY f 68 215.948 286.338 171.599 1.00 50.00 ATOM 185 N LEU f 69 215.439 285.742 173.708 1.00 50.00 ATOM 186 CA LEU f 69 215.727 284.327 173.519 1.00 50.00 ATOM 187 C LEU f 69 214.602 283.699 172.710 1.00 50.00 ATOM 188 O LEU f 69 213.431 283.790 173.094 1.00 50.00 ATOM 189 N VAL f 70 214.957 283.069 171.592 1.00 50.00 ATOM 190 CA VAL f 70 213.985 282.455 170.697 1.00 50.00 ATOM 191 C VAL f 70 214.677 281.374 169.877 1.00 50.00 ATOM 192 O VAL f 70 215.907 281.324 169.791 1.00 50.00 ATOM 193 N LEU f 71 213.871 280.502 169.277 1.00 50.00 ATOM 194 CA LEU f 71 214.358 279.423 168.427 1.00 50.00 ATOM 195 C LEU f 71 213.582 279.446 167.120 1.00 50.00 ATOM 196 O LEU f 71 212.348 279.374 167.124 1.00 50.00 ATOM 197 N LEU f 72 214.302 279.548 166.006 1.00 50.00 ATOM 198 CA LEU f 72 213.684 279.602 164.690 1.00 50.00 ATOM 199 C LEU f 72 213.880 278.284 163.951 1.00 50.00 ATOM 200 O LEU f 72 214.933 277.648 164.038 1.00 50.00 ATOM 201 N ARG f 73 212.847 277.881 163.215 1.00 50.00 ATOM 202 CA ARG f 73 212.904 276.653 162.443 1.00 50.00 ATOM 203 C ARG f 73 213.746 276.847 161.185 1.00 50.00 ATOM 204 O ARG f 73 213.908 277.960 160.676 1.00 50.00 ATOM 205 N GLY f 74 214.282 275.739 160.683 1.00 50.00 ATOM 206 CA GLY f 74 215.107 275.776 159.491 1.00 50.00 ATOM 207 C GLY f 74 214.322 275.548 158.216 1.00 50.00 ATOM 208 O GLY f 74 214.850 275.723 157.114 1.00 50.00 ATOM 209 N GLU f 75 213.054 275.154 158.355 1.00 50.00 ATOM 210 CA GLU f 75 212.217 274.932 157.180 1.00 50.00 ATOM 211 C GLU f 75 211.886 276.246 156.484 1.00 50.00 ATOM 212 O GLU f 75 211.859 276.316 155.250 1.00 50.00 ATOM 213 N ASN f 76 211.631 277.296 157.259 1.00 50.00 ATOM 214 CA ASN f 76 211.323 278.612 156.716 1.00 50.00 ATOM 215 C ASN f 76 212.549 279.506 156.590 1.00 50.00 ATOM 216 O ASN f 76 212.415 280.662 156.177 1.00 50.00 ATOM 217 N LEU f 77 213.733 279.004 156.936 1.00 50.00 ATOM 218 CA LEU f 77 214.951 279.792 156.834 1.00 50.00 ATOM 219 C LEU f 77 215.290 280.069 155.375 1.00 50.00 ATOM 220 O LEU f 77 214.971 279.283 154.478 1.00 50.00 ATOM 221 N VAL f 78 215.946 281.205 155.142 1.00 50.00 ATOM 222 CA VAL f 78 216.309 281.617 153.792 1.00 50.00 ATOM 223 C VAL f 78 217.807 281.876 153.718 1.00 50.00 ATOM 224 O VAL f 78 218.547 281.126 153.072 1.00 50.00 ATOM 225 N SER f 79 218.263 282.937 154.378 1.00 50.00 ATOM 226 CA SER f 79 219.664 283.326 154.320 1.00 50.00 ATOM 227 C SER f 79 220.157 283.645 155.724 1.00 50.00 ATOM 228 O SER f 79 219.410 284.139 156.574 1.00 50.00 ATOM 229 N MET f 80 221.437 283.354 155.958 1.00 50.00 ATOM 230 CA MET f 80 222.074 283.653 157.240 1.00 50.00 ATOM 231 C MET f 80 223.346 284.441 156.940 1.00 50.00 ATOM 232 O MET f 80 224.271 283.916 156.313 1.00 50.00 ATOM 233 N THR f 81 223.384 285.690 157.391 1.00 50.00 ATOM 234 CA THR f 81 224.514 286.576 157.152 1.00 50.00 ATOM 235 C THR f 81 225.068 287.108 158.468 1.00 50.00 ATOM 236 O THR f 81 224.406 287.075 159.508 1.00 50.00 ATOM 237 N VAL f 82 226.299 287.608 158.407 1.00 50.00 ATOM 238 CA VAL f 82 226.964 288.171 159.579 1.00 50.00 ATOM 239 C VAL f 82 226.725 289.678 159.580 1.00 50.00 ATOM 240 O VAL f 82 227.209 290.394 158.700 1.00 50.00 ATOM 241 N GLU f 83 225.975 290.161 160.571 1.00 50.00 ATOM 242 CA GLU f 83 225.635 291.575 160.667 1.00 50.00 ATOM 243 C GLU f 83 226.573 292.364 161.570 1.00 50.00 ATOM 244 O GLU f 83 226.388 293.577 161.715 1.00 50.00 ATOM 245 N GLY f 84 227.563 291.718 162.179 1.00 50.00 ATOM 246 CA GLY f 84 228.481 292.400 163.058 1.00 50.00 ATOM 247 C GLY f 84 229.454 291.459 163.737 1.00 50.00 ATOM 248 O GLY f 84 229.285 290.236 163.723 1.00 50.00 ATOM 249 N PRO f 85 230.497 292.017 164.345 1.00 50.00 ATOM 250 CA PRO f 85 231.482 291.192 165.056 1.00 50.00 ATOM 251 C PRO f 85 230.845 290.465 166.225 1.00 50.00 ATOM 252 O PRO f 85 229.832 290.922 166.777 1.00 50.00 ATOM 253 CG PRO f 85 232.386 293.355 164.583 1.00 50.00 ATOM 254 CD PRO f 85 230.921 293.427 164.263 1.00 50.00 ATOM 255 N PRO f 86 231.417 289.325 166.644 1.00 50.00 ATOM 256 CA PRO f 86 230.897 288.555 167.778 1.00 50.00 ATOM 257 C PRO f 86 231.102 289.272 169.108 1.00 50.00 ATOM 258 O PRO f 86 231.948 290.165 169.165 1.00 50.00 ATOM 259 CG PRO f 86 232.994 287.665 167.080 1.00 50.00 ATOM 260 CD PRO f 86 232.614 288.697 166.057 1.00 50.00 TER