HEADER SPLICING 31-DEC-69 6FF7 TITLE human Bact spliceosome core structure COMPND MOL_ID: 50; COMPND 2 MOLECULE: Pre-mRNA-splicing factor ISY1 homolog; COMPND 3 CHAIN: w; EXPDTA ELECTRON MICROSCOPY DBREF 6FF7 w 1 285 UNP Q9ULR0 ISY1_HUMAN 1 285 SEQRES 1 w 56 LEU PRO LYS ALA GLU LYS TRP ARG ARG GLN ILE ILE GLY SEQRES 2 w 56 GLU ILE SER LYS LYS VAL ALA GLN ILE GLN ASN ALA GLY SEQRES 3 w 56 LEU GLY GLU PHE ARG ILE ARG ASP LEU ASN ASP GLU ILE SEQRES 4 w 56 ASN LYS LEU LEU ARG GLU LYS GLY HIS TRP GLU VAL ARG SEQRES 5 w 56 ILE LYS GLU LEU ATOM 1 N LEU w 39 248.890 128.110 277.163 1.00114.66 ATOM 2 CA LEU w 39 247.923 128.114 276.106 1.00114.66 ATOM 3 C LEU w 39 247.398 129.509 275.911 1.00114.66 ATOM 4 O LEU w 39 247.317 129.979 274.776 1.00114.66 ATOM 5 CB LEU w 39 246.734 127.174 276.401 1.00114.66 ATOM 6 N PRO w 40 247.043 130.203 276.966 1.00 87.12 ATOM 7 CA PRO w 40 246.521 131.536 276.836 1.00 87.12 ATOM 8 C PRO w 40 247.548 132.494 276.342 1.00 87.12 ATOM 9 O PRO w 40 247.165 133.553 275.848 1.00 87.12 ATOM 10 CB PRO w 40 245.935 131.903 278.204 1.00 87.12 ATOM 11 N LYS w 41 248.842 132.188 276.539 1.00134.26 ATOM 12 CA LYS w 41 249.909 133.035 276.089 1.00134.26 ATOM 13 C LYS w 41 250.061 132.975 274.599 1.00134.26 ATOM 14 O LYS w 41 250.287 133.994 273.949 1.00134.26 ATOM 15 CB LYS w 41 251.255 132.672 276.729 1.00134.26 ATOM 16 N ALA w 42 249.940 131.766 274.026 1.00 56.98 ATOM 17 CA ALA w 42 250.147 131.522 272.624 1.00 56.98 ATOM 18 C ALA w 42 249.115 132.239 271.817 1.00 56.98 ATOM 19 O ALA w 42 249.351 132.578 270.657 1.00 56.98 ATOM 20 CB ALA w 42 250.065 130.026 272.265 1.00 56.98 ATOM 21 N GLU w 43 247.910 132.406 272.383 1.00 67.15 ATOM 22 CA GLU w 43 246.830 133.044 271.690 1.00 67.15 ATOM 23 C GLU w 43 247.129 134.495 271.447 1.00 67.15 ATOM 24 O GLU w 43 246.760 135.037 270.409 1.00 67.15 ATOM 25 CB GLU w 43 245.497 132.933 272.446 1.00 67.15 ATOM 26 N LYS w 44 247.748 135.179 272.424 1.00147.92 ATOM 27 CA LYS w 44 248.085 136.574 272.287 1.00147.92 ATOM 28 C LYS w 44 249.217 136.769 271.332 1.00147.92 ATOM 29 O LYS w 44 249.252 137.740 270.582 1.00147.92 ATOM 30 CB LYS w 44 248.513 137.221 273.610 1.00147.92 ATOM 31 N TRP w 45 250.195 135.851 271.363 1.00 98.31 ATOM 32 CA TRP w 45 251.386 135.965 270.569 1.00 98.31 ATOM 33 C TRP w 45 251.068 135.843 269.112 1.00 98.31 ATOM 34 O TRP w 45 251.797 136.370 268.273 1.00 98.31 ATOM 35 CB TRP w 45 252.447 134.907 270.907 1.00 98.31 ATOM 36 N ARG w 46 250.035 135.063 268.754 1.00112.78 ATOM 37 CA ARG w 46 249.727 134.892 267.363 1.00112.78 ATOM 38 C ARG w 46 249.190 136.166 266.781 1.00112.78 ATOM 39 O ARG w 46 249.512 136.518 265.649 1.00112.78 ATOM 40 CB ARG w 46 248.698 133.787 267.078 1.00112.78 ATOM 41 N ARG w 47 248.335 136.877 267.542 1.00165.89 ATOM 42 CA ARG w 47 247.687 138.089 267.113 1.00165.89 ATOM 43 C ARG w 47 248.702 139.161 266.886 1.00165.89 ATOM 44 O ARG w 47 248.626 139.919 265.922 1.00165.89 ATOM 45 CB ARG w 47 246.737 138.655 268.181 1.00165.89 ATOM 46 N GLN w 48 249.689 139.243 267.788 1.00 84.43 ATOM 47 CA GLN w 48 250.665 140.288 267.773 1.00 84.43 ATOM 48 C GLN w 48 251.453 140.227 266.499 1.00 84.43 ATOM 49 O GLN w 48 251.797 141.262 265.932 1.00 84.43 ATOM 50 CB GLN w 48 251.634 140.170 268.958 1.00 84.43 ATOM 51 N ILE w 49 251.773 139.007 266.026 1.00 49.74 ATOM 52 CA ILE w 49 252.543 138.809 264.830 1.00 49.74 ATOM 53 C ILE w 49 251.777 139.290 263.639 1.00 49.74 ATOM 54 O ILE w 49 252.356 139.851 262.709 1.00 49.74 ATOM 55 CB ILE w 49 252.927 137.375 264.606 1.00 49.74 ATOM 56 N ILE w 50 250.450 139.075 263.637 1.00 37.92 ATOM 57 CA ILE w 50 249.618 139.427 262.525 1.00 37.92 ATOM 58 C ILE w 50 249.714 140.905 262.294 1.00 37.92 ATOM 59 O ILE w 50 249.831 141.359 261.156 1.00 37.92 ATOM 60 CB ILE w 50 248.173 139.096 262.765 1.00 37.92 ATOM 61 N GLY w 51 249.688 141.705 263.373 1.00 21.78 ATOM 62 CA GLY w 51 249.706 143.131 263.228 1.00 21.78 ATOM 63 C GLY w 51 250.966 143.550 262.533 1.00 21.78 ATOM 64 O GLY w 51 250.942 144.461 261.709 1.00 21.78 ATOM 65 N GLU w 52 252.105 142.912 262.863 1.00 36.13 ATOM 66 CA GLU w 52 253.368 143.282 262.288 1.00 36.13 ATOM 67 C GLU w 52 253.389 142.989 260.820 1.00 36.13 ATOM 68 O GLU w 52 253.885 143.791 260.030 1.00 36.13 ATOM 69 CB GLU w 52 254.559 142.558 262.939 1.00 36.13 ATOM 70 N ILE w 53 252.827 141.838 260.402 1.00 34.43 ATOM 71 CA ILE w 53 252.880 141.482 259.016 1.00 34.43 ATOM 72 C ILE w 53 252.173 142.543 258.235 1.00 34.43 ATOM 73 O ILE w 53 252.664 142.995 257.202 1.00 34.43 ATOM 74 CB ILE w 53 252.169 140.192 258.720 1.00 34.43 ATOM 75 N SER w 54 250.998 142.977 258.727 1.00 33.67 ATOM 76 CA SER w 54 250.185 143.935 258.037 1.00 33.67 ATOM 77 C SER w 54 250.918 145.236 257.907 1.00 33.67 ATOM 78 O SER w 54 250.908 145.845 256.840 1.00 33.67 ATOM 79 CB SER w 54 248.871 144.237 258.774 1.00 33.67 ATOM 80 N LYS w 55 251.595 145.678 258.978 1.00110.99 ATOM 81 CA LYS w 55 252.256 146.952 258.935 1.00110.99 ATOM 82 C LYS w 55 253.226 146.918 257.801 1.00110.99 ATOM 83 O LYS w 55 253.376 147.897 257.075 1.00110.99 ATOM 84 CB LYS w 55 253.084 147.257 260.197 1.00110.99 ATOM 85 N LYS w 56 253.926 145.782 257.644 1.00 76.65 ATOM 86 CA LYS w 56 254.887 145.616 256.591 1.00 76.65 ATOM 87 C LYS w 56 254.227 145.495 255.249 1.00 76.65 ATOM 88 O LYS w 56 254.740 146.013 254.259 1.00 76.65 ATOM 89 CB LYS w 56 255.804 144.404 256.810 1.00 76.65 ATOM 90 N VAL w 57 253.061 144.819 255.168 1.00114.45 ATOM 91 CA VAL w 57 252.462 144.587 253.883 1.00114.45 ATOM 92 C VAL w 57 252.133 145.892 253.238 1.00114.45 ATOM 93 O VAL w 57 252.239 146.026 252.021 1.00114.45 ATOM 94 CB VAL w 57 251.208 143.754 253.897 1.00114.45 ATOM 95 N ALA w 58 251.714 146.891 254.036 1.00 35.48 ATOM 96 CA ALA w 58 251.323 148.153 253.480 1.00 35.48 ATOM 97 C ALA w 58 252.479 148.791 252.770 1.00 35.48 ATOM 98 O ALA w 58 252.336 149.267 251.645 1.00 35.48 ATOM 99 CB ALA w 58 250.849 149.145 254.551 1.00 35.48 ATOM 100 N GLN w 59 253.675 148.776 253.383 1.00 54.64 ATOM 101 CA GLN w 59 254.792 149.449 252.779 1.00 54.64 ATOM 102 C GLN w 59 255.061 148.815 251.449 1.00 54.64 ATOM 103 O GLN w 59 255.472 149.481 250.499 1.00 54.64 ATOM 104 CB GLN w 59 256.076 149.379 253.623 1.00 54.64 ATOM 105 N ILE w 60 254.873 147.490 251.364 1.00 53.67 ATOM 106 CA ILE w 60 255.079 146.769 250.141 1.00 53.67 ATOM 107 C ILE w 60 254.044 147.173 249.131 1.00 53.67 ATOM 108 O ILE w 60 254.343 147.343 247.950 1.00 53.67 ATOM 109 CB ILE w 60 255.028 145.290 250.355 1.00 53.67 ATOM 110 N GLN w 61 252.791 147.347 249.585 1.00 73.46 ATOM 111 CA GLN w 61 251.685 147.678 248.730 1.00 73.46 ATOM 112 C GLN w 61 251.946 149.010 248.093 1.00 73.46 ATOM 113 O GLN w 61 251.579 149.238 246.942 1.00 73.46 ATOM 114 CB GLN w 61 250.377 147.771 249.531 1.00 73.46 ATOM 115 N ASN w 62 252.602 149.920 248.838 1.00 42.06 ATOM 116 CA ASN w 62 252.867 151.258 248.385 1.00 42.06 ATOM 117 C ASN w 62 253.689 151.210 247.135 1.00 42.06 ATOM 118 O ASN w 62 253.396 151.943 246.193 1.00 42.06 ATOM 119 CB ASN w 62 253.663 152.090 249.408 1.00 42.06 ATOM 120 N ALA w 63 254.693 150.307 247.078 1.00 88.96 ATOM 121 CA ALA w 63 255.573 150.217 245.942 1.00 88.96 ATOM 122 C ALA w 63 256.023 151.586 245.547 1.00 88.96 ATOM 123 O ALA w 63 255.426 152.237 244.697 1.00 88.96 ATOM 124 CB ALA w 63 254.923 149.555 244.716 1.00 88.96 ATOM 125 N GLY w 64 257.147 152.054 246.106 1.00182.80 ATOM 126 CA GLY w 64 257.514 153.418 245.874 1.00182.80 ATOM 127 C GLY w 64 258.545 153.786 246.894 1.00182.80 ATOM 128 O GLY w 64 259.068 154.897 246.884 1.00182.80 ATOM 129 N LEU w 65 258.800 152.869 247.845 1.00124.52 ATOM 130 CA LEU w 65 259.857 152.971 248.815 1.00124.52 ATOM 131 C LEU w 65 261.172 152.766 248.116 1.00124.52 ATOM 132 O LEU w 65 262.176 153.384 248.471 1.00124.52 ATOM 133 CB LEU w 65 259.775 151.875 249.894 1.00124.52 ATOM 134 N GLY w 66 261.198 151.879 247.099 1.00 39.23 ATOM 135 CA GLY w 66 262.418 151.538 246.415 1.00 39.23 ATOM 136 C GLY w 66 262.642 150.068 246.609 1.00 39.23 ATOM 137 O GLY w 66 262.425 149.527 247.693 1.00 39.23 ATOM 138 N GLU w 67 263.164 149.398 245.564 1.00 89.20 ATOM 139 CA GLU w 67 263.279 147.964 245.550 1.00 89.20 ATOM 140 C GLU w 67 264.055 147.532 246.743 1.00 89.20 ATOM 141 O GLU w 67 263.720 146.536 247.383 1.00 89.20 ATOM 142 CB GLU w 67 263.996 147.432 244.299 1.00 89.20 ATOM 143 N PHE w 68 265.095 148.296 247.100 1.00118.96 ATOM 144 CA PHE w 68 265.889 147.923 248.228 1.00118.96 ATOM 145 C PHE w 68 265.004 147.828 249.436 1.00118.96 ATOM 146 O PHE w 68 265.140 146.895 250.228 1.00118.96 ATOM 147 CB PHE w 68 267.039 148.918 248.481 1.00118.96 ATOM 148 N ARG w 69 264.082 148.794 249.623 1.00107.79 ATOM 149 CA ARG w 69 263.203 148.762 250.762 1.00107.79 ATOM 150 C ARG w 69 262.276 147.588 250.683 1.00107.79 ATOM 151 O ARG w 69 262.136 146.825 251.637 1.00107.79 ATOM 152 CB ARG w 69 262.306 150.007 250.868 1.00107.79 ATOM 153 N ILE w 70 261.657 147.381 249.505 1.00 58.73 ATOM 154 CA ILE w 70 260.661 146.362 249.356 1.00 58.73 ATOM 155 C ILE w 70 261.293 145.046 249.674 1.00 58.73 ATOM 156 O ILE w 70 260.677 144.181 250.293 1.00 58.73 ATOM 157 CB ILE w 70 260.117 146.317 247.963 1.00 58.73 ATOM 158 N ARG w 71 262.550 144.871 249.251 1.00106.31 ATOM 159 CA ARG w 71 263.266 143.650 249.479 1.00106.31 ATOM 160 C ARG w 71 263.356 143.390 250.950 1.00106.31 ATOM 161 O ARG w 71 263.073 142.285 251.411 1.00106.31 ATOM 162 CB ARG w 71 264.703 143.770 248.950 1.00106.31 ATOM 163 N ASP w 72 263.728 144.415 251.735 1.00 40.06 ATOM 164 CA ASP w 72 263.925 144.225 253.139 1.00 40.06 ATOM 165 C ASP w 72 262.621 143.835 253.765 1.00 40.06 ATOM 166 O ASP w 72 262.578 142.929 254.595 1.00 40.06 ATOM 167 CB ASP w 72 264.422 145.505 253.834 1.00 40.06 ATOM 168 N LEU w 73 261.527 144.511 253.375 1.00 62.85 ATOM 169 CA LEU w 73 260.252 144.255 253.987 1.00 62.85 ATOM 170 C LEU w 73 259.840 142.846 253.715 1.00 62.85 ATOM 171 O LEU w 73 259.618 142.068 254.638 1.00 62.85 ATOM 172 CB LEU w 73 259.147 145.140 253.395 1.00 62.85 ATOM 173 N ASN w 74 259.836 142.460 252.425 1.00 43.96 ATOM 174 CA ASN w 74 259.335 141.179 252.016 1.00 43.96 ATOM 175 C ASN w 74 260.083 140.125 252.754 1.00 43.96 ATOM 176 O ASN w 74 259.515 139.105 253.138 1.00 43.96 ATOM 177 CB ASN w 74 259.546 140.900 250.518 1.00 43.96 ATOM 178 N ASP w 75 261.388 140.345 252.981 1.00 45.31 ATOM 179 CA ASP w 75 262.153 139.336 253.646 1.00 45.31 ATOM 180 C ASP w 75 261.552 139.105 255.000 1.00 45.31 ATOM 181 O ASP w 75 261.385 137.963 255.423 1.00 45.31 ATOM 182 CB ASP w 75 263.629 139.736 253.844 1.00 45.31 ATOM 183 N GLU w 76 261.201 140.188 255.713 1.00125.87 ATOM 184 CA GLU w 76 260.668 140.073 257.041 1.00125.87 ATOM 185 C GLU w 76 259.309 139.447 257.030 1.00125.87 ATOM 186 O GLU w 76 258.992 138.671 257.931 1.00125.87 ATOM 187 CB GLU w 76 260.552 141.416 257.771 1.00125.87 ATOM 188 N ILE w 77 258.481 139.741 256.002 1.00 98.48 ATOM 189 CA ILE w 77 257.128 139.253 256.014 1.00 98.48 ATOM 190 C ILE w 77 257.120 137.768 256.154 1.00 98.48 ATOM 191 O ILE w 77 256.366 137.239 256.966 1.00 98.48 ATOM 192 CB ILE w 77 256.321 139.590 254.789 1.00 98.48 ATOM 193 N ASN w 78 257.971 137.050 255.403 1.00 30.50 ATOM 194 CA ASN w 78 257.978 135.619 255.511 1.00 30.50 ATOM 195 C ASN w 78 258.382 135.229 256.899 1.00 30.50 ATOM 196 O ASN w 78 257.786 134.333 257.495 1.00 30.50 ATOM 197 CB ASN w 78 258.948 134.944 254.528 1.00 30.50 ATOM 198 N LYS w 79 259.391 135.912 257.468 1.00 84.53 ATOM 199 CA LYS w 79 259.869 135.542 258.768 1.00 84.53 ATOM 200 C LYS w 79 258.751 135.673 259.755 1.00 84.53 ATOM 201 O LYS w 79 258.634 134.856 260.666 1.00 84.53 ATOM 202 CB LYS w 79 261.046 136.403 259.255 1.00 84.53 ATOM 203 N LEU w 80 257.916 136.719 259.612 1.00 52.39 ATOM 204 CA LEU w 80 256.803 136.935 260.496 1.00 52.39 ATOM 205 C LEU w 80 255.804 135.827 260.346 1.00 52.39 ATOM 206 O LEU w 80 255.274 135.333 261.341 1.00 52.39 ATOM 207 CB LEU w 80 256.059 138.252 260.207 1.00 52.39 ATOM 208 N LEU w 81 255.511 135.416 259.093 1.00 99.57 ATOM 209 CA LEU w 81 254.523 134.397 258.855 1.00 99.57 ATOM 210 C LEU w 81 254.955 133.087 259.414 1.00 99.57 ATOM 211 O LEU w 81 254.141 132.362 259.984 1.00 99.57 ATOM 212 CB LEU w 81 254.183 134.158 257.375 1.00 99.57 ATOM 213 N ARG w 82 256.249 132.749 259.287 1.00151.42 ATOM 214 CA ARG w 82 256.677 131.451 259.719 1.00151.42 ATOM 215 C ARG w 82 256.381 131.326 261.179 1.00151.42 ATOM 216 O ARG w 82 255.999 130.252 261.641 1.00151.42 ATOM 217 CB ARG w 82 258.180 131.160 259.517 1.00151.42 ATOM 218 N GLU w 83 256.539 132.420 261.946 1.00118.49 ATOM 219 CA GLU w 83 256.289 132.369 263.359 1.00118.49 ATOM 220 C GLU w 83 254.854 132.022 263.599 1.00118.49 ATOM 221 O GLU w 83 254.543 131.272 264.524 1.00118.49 ATOM 222 CB GLU w 83 256.533 133.703 264.090 1.00118.49 ATOM 223 N LYS w 84 253.944 132.559 262.767 1.00 79.34 ATOM 224 CA LYS w 84 252.537 132.353 262.942 1.00 79.34 ATOM 225 C LYS w 84 252.226 130.895 262.801 1.00 79.34 ATOM 226 O LYS w 84 251.458 130.333 263.580 1.00 79.34 ATOM 227 CB LYS w 84 251.710 133.109 261.886 1.00 79.34 ATOM 228 N GLY w 85 252.865 130.231 261.825 1.00 41.47 ATOM 229 CA GLY w 85 252.578 128.856 261.558 1.00 41.47 ATOM 230 C GLY w 85 252.839 128.086 262.805 1.00 41.47 ATOM 231 O GLY w 85 252.182 127.080 263.065 1.00 41.47 ATOM 232 N HIS w 86 253.870 128.486 263.564 1.00 76.81 ATOM 233 CA HIS w 86 254.200 127.820 264.790 1.00 76.81 ATOM 234 C HIS w 86 253.192 128.123 265.861 1.00 76.81 ATOM 235 O HIS w 86 252.745 127.229 266.576 1.00 76.81 ATOM 236 CB HIS w 86 255.565 128.261 265.332 1.00 76.81 ATOM 237 N TRP w 87 252.844 129.417 266.024 1.00 95.23 ATOM 238 CA TRP w 87 251.977 129.836 267.091 1.00 95.23 ATOM 239 C TRP w 87 250.578 129.362 266.891 1.00 95.23 ATOM 240 O TRP w 87 250.033 128.653 267.734 1.00 95.23 ATOM 241 CB TRP w 87 251.941 131.361 267.260 1.00 95.23 ATOM 242 N GLU w 88 249.990 129.686 265.728 1.00 64.67 ATOM 243 CA GLU w 88 248.611 129.366 265.509 1.00 64.67 ATOM 244 C GLU w 88 248.451 127.885 265.645 1.00 64.67 ATOM 245 O GLU w 88 247.423 127.411 266.122 1.00 64.67 ATOM 246 CB GLU w 88 248.099 129.785 264.123 1.00 64.67 ATOM 247 N VAL w 89 249.446 127.109 265.178 1.00125.59 ATOM 248 CA VAL w 89 249.390 125.681 265.337 1.00125.59 ATOM 249 C VAL w 89 249.645 125.290 266.759 1.00125.59 ATOM 250 O VAL w 89 248.986 124.394 267.284 1.00125.59 ATOM 251 CB VAL w 89 250.380 124.907 264.512 1.00125.59 ATOM 252 N ARG w 90 250.602 125.963 267.430 1.00113.75 ATOM 253 CA ARG w 90 250.997 125.535 268.742 1.00113.75 ATOM 254 C ARG w 90 249.823 125.638 269.646 1.00113.75 ATOM 255 O ARG w 90 249.708 124.872 270.600 1.00113.75 ATOM 256 CB ARG w 90 252.120 126.348 269.407 1.00113.75 ATOM 257 N ILE w 91 248.931 126.606 269.392 1.00 44.81 ATOM 258 CA ILE w 91 247.793 126.800 270.244 1.00 44.81 ATOM 259 C ILE w 91 246.947 125.562 270.218 1.00 44.81 ATOM 260 O ILE w 91 246.425 125.143 271.248 1.00 44.81 ATOM 261 CB ILE w 91 246.942 127.956 269.799 1.00 44.81 ATOM 262 N LYS w 92 246.772 124.957 269.026 1.00 60.75 ATOM 263 CA LYS w 92 245.960 123.780 268.850 1.00 60.75 ATOM 264 C LYS w 92 246.561 122.608 269.567 1.00 60.75 ATOM 265 O LYS w 92 245.851 121.828 270.201 1.00 60.75 ATOM 266 CB LYS w 92 245.841 123.366 267.376 1.00 60.75 ATOM 267 N GLU w 93 247.895 122.455 269.482 1.00 54.86 ATOM 268 CA GLU w 93 248.601 121.343 270.050 1.00 54.86 ATOM 269 C GLU w 93 248.409 121.377 271.537 1.00 54.86 ATOM 270 O GLU w 93 248.329 120.336 272.188 1.00 54.86 ATOM 271 CB GLU w 93 250.104 121.432 269.733 1.00 54.86 ATOM 272 N LEU w 94 248.354 122.593 272.111 1.00113.80 ATOM 273 CA LEU w 94 248.145 122.816 273.517 1.00113.80 ATOM 274 C LEU w 94 246.767 122.389 273.916 1.00113.80 ATOM 275 O LEU w 94 246.563 122.000 275.066 1.00113.80 ATOM 276 CB LEU w 94 248.342 124.279 273.970 1.00113.80 TER