HEADER TRANSCRIPTION 31-DEC-69 3K7A TITLE Crystal Structure of an RNA polymerase II-TFIIB complex COMPND MOL_ID: 11; COMPND 2 MOLECULE: Transcription initiation factor IIB; COMPND 3 CHAIN: M; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 3.80 ANGSTORMS DBREF 3K7A M 1 345 UNP P29055 TF2B_YEAST 1 345 SEQRES 1 M 50 ASN LEU ASN ILE VAL LEU THR CYS PRO GLU CYS LYS VAL SEQRES 2 M 50 TYR PRO PRO LYS ILE VAL GLU ARG PHE SER GLU GLY ASP SEQRES 3 M 50 VAL VAL CYS ALA LEU CYS GLY LEU VAL LEU SER ASP LYS SEQRES 4 M 50 LEU VAL ASP THR ARG SER GLU TRP ARG THR PHE ATOM 1 N ASN M 17 0.858 -81.804 -32.389 1.00223.18 ATOM 2 CA ASN M 17 1.781 -81.065 -31.537 1.00214.53 ATOM 3 C ASN M 17 3.172 -81.689 -31.516 1.00239.33 ATOM 4 O ASN M 17 3.324 -82.883 -31.255 1.00254.97 ATOM 5 N LEU M 18 4.183 -80.864 -31.755 1.00197.72 ATOM 6 CA LEU M 18 5.534 -81.375 -31.807 1.00182.13 ATOM 7 C LEU M 18 6.126 -81.506 -30.415 1.00213.02 ATOM 8 O LEU M 18 6.351 -80.523 -29.709 1.00215.48 ATOM 9 N ASN M 19 6.296 -82.773 -30.057 1.00245.83 ATOM 10 CA ASN M 19 7.011 -83.200 -28.883 1.00247.99 ATOM 11 C ASN M 19 8.208 -83.931 -29.470 1.00230.73 ATOM 12 O ASN M 19 8.071 -84.923 -30.186 1.00326.52 ATOM 13 N ILE M 20 9.403 -83.513 -29.058 1.00192.01 ATOM 14 CA ILE M 20 10.630 -84.261 -29.343 1.00188.18 ATOM 15 C ILE M 20 11.346 -84.591 -28.020 1.00195.60 ATOM 16 O ILE M 20 11.626 -83.688 -27.231 1.00196.56 ATOM 17 N VAL M 21 11.647 -85.867 -27.782 1.00177.10 ATOM 18 CA VAL M 21 12.343 -86.264 -26.555 1.00120.40 ATOM 19 C VAL M 21 13.326 -87.434 -26.694 1.00154.26 ATOM 20 O VAL M 21 13.186 -88.271 -27.585 1.00227.52 ATOM 21 N LEU M 22 14.311 -87.492 -25.799 1.00206.96 ATOM 22 CA LEU M 22 15.283 -88.591 -25.760 1.00238.13 ATOM 23 C LEU M 22 15.192 -89.479 -24.507 1.00210.49 ATOM 24 O LEU M 22 16.106 -90.253 -24.222 1.00212.45 ATOM 25 N THR M 23 14.066 -89.373 -23.806 1.00141.13 ATOM 26 CA THR M 23 13.905 -90.003 -22.508 1.00141.35 ATOM 27 C THR M 23 14.201 -91.475 -22.658 1.00180.51 ATOM 28 O THR M 23 13.770 -92.122 -23.613 1.00258.35 ATOM 29 N CYS M 24 14.930 -92.001 -21.689 1.00173.77 ATOM 30 CA CYS M 24 15.465 -93.336 -21.782 1.00167.36 ATOM 31 C CYS M 24 14.328 -94.309 -21.971 1.00167.42 ATOM 32 O CYS M 24 14.477 -95.312 -22.669 1.00171.84 ATOM 33 N PRO M 25 13.194 -94.041 -21.338 1.00122.38 ATOM 34 CA PRO M 25 12.124 -95.035 -21.400 1.00127.81 ATOM 35 C PRO M 25 12.039 -95.974 -20.190 1.00162.39 ATOM 36 O PRO M 25 11.004 -96.045 -19.523 1.00222.27 ATOM 37 N GLU M 26 13.130 -96.687 -19.919 1.00114.66 ATOM 38 CA GLU M 26 13.195 -97.647 -18.818 1.00168.55 ATOM 39 C GLU M 26 13.157 -96.977 -17.435 1.00211.57 ATOM 40 O GLU M 26 12.415 -97.407 -16.545 1.00196.34 ATOM 41 N CYS M 27 13.940 -95.915 -17.265 1.00313.00 ATOM 42 CA CYS M 27 13.970 -95.195 -15.997 1.00258.85 ATOM 43 C CYS M 27 13.835 -93.692 -16.218 1.00251.86 ATOM 44 O CYS M 27 14.813 -92.952 -16.084 1.00338.13 ATOM 45 N LYS M 28 12.625 -93.244 -16.558 1.00153.40 ATOM 46 CA LYS M 28 12.405 -91.833 -16.875 1.00153.70 ATOM 47 C LYS M 28 12.898 -90.963 -15.731 1.00153.87 ATOM 48 O LYS M 28 12.636 -91.253 -14.568 1.00224.32 ATOM 49 N VAL M 29 13.704 -89.959 -16.077 1.00163.27 ATOM 50 CA VAL M 29 14.250 -89.013 -15.107 1.00182.23 ATOM 51 C VAL M 29 13.675 -87.613 -15.309 1.00279.38 ATOM 52 O VAL M 29 13.583 -86.826 -14.367 1.00283.43 ATOM 53 N TYR M 30 13.278 -87.322 -16.550 1.00214.62 ATOM 54 CA TYR M 30 12.621 -86.061 -16.909 1.00210.51 ATOM 55 C TYR M 30 13.281 -84.721 -16.562 1.00207.49 ATOM 56 O TYR M 30 12.668 -83.907 -15.872 1.00210.82 ATOM 57 N PRO M 31 14.527 -84.492 -16.977 1.00227.28 ATOM 58 CA PRO M 31 15.291 -85.383 -17.865 1.00230.51 ATOM 59 C PRO M 31 16.792 -85.046 -17.783 1.00268.42 ATOM 60 O PRO M 31 17.126 -83.978 -17.271 1.00333.25 ATOM 61 N PRO M 32 17.671 -85.913 -18.284 1.00174.46 ATOM 62 CA PRO M 32 19.118 -85.668 -18.185 1.00255.92 ATOM 63 C PRO M 32 19.912 -85.854 -19.483 1.00257.12 ATOM 64 O PRO M 32 19.488 -86.598 -20.367 1.00247.63 ATOM 65 N LYS M 33 21.057 -85.177 -19.581 1.00350.66 ATOM 66 CA LYS M 33 21.924 -85.262 -20.760 1.00354.91 ATOM 67 C LYS M 33 22.344 -86.721 -20.860 1.00252.46 ATOM 68 O LYS M 33 22.471 -87.392 -19.836 1.00247.60 ATOM 69 N ILE M 34 22.402 -87.257 -22.078 1.00129.38 ATOM 70 CA ILE M 34 22.684 -88.682 -22.275 1.00132.24 ATOM 71 C ILE M 34 24.038 -89.035 -22.881 1.00132.88 ATOM 72 O ILE M 34 24.304 -90.195 -23.194 1.00129.55 ATOM 73 N VAL M 35 24.808 -87.985 -23.151 1.00164.94 ATOM 74 CA VAL M 35 26.098 -88.076 -23.817 1.00147.93 ATOM 75 C VAL M 35 25.874 -87.937 -25.326 1.00160.05 ATOM 76 O VAL M 35 24.791 -88.236 -25.829 1.00193.17 ATOM 77 N GLU M 36 26.894 -87.419 -26.007 1.00167.41 ATOM 78 CA GLU M 36 26.909 -87.296 -27.459 1.00166.46 ATOM 79 C GLU M 36 27.865 -88.377 -27.955 1.00169.03 ATOM 80 O GLU M 36 27.906 -88.708 -29.140 1.00196.96 ATOM 81 N ARG M 37 28.627 -88.919 -27.010 1.00222.41 ATOM 82 CA ARG M 37 29.577 -89.995 -27.253 1.00212.20 ATOM 83 C ARG M 37 30.769 -89.424 -27.995 1.00224.24 ATOM 84 O ARG M 37 30.867 -88.211 -28.179 1.00319.23 ATOM 85 N PHE M 38 31.662 -90.294 -28.449 1.00275.62 ATOM 86 CA PHE M 38 32.759 -89.824 -29.283 1.00253.56 ATOM 87 C PHE M 38 32.742 -90.510 -30.646 1.00252.22 ATOM 88 O PHE M 38 32.863 -89.858 -31.682 1.00261.08 ATOM 89 N SER M 39 32.588 -91.831 -30.634 1.00130.63 ATOM 90 CA SER M 39 32.542 -92.608 -31.868 1.00132.47 ATOM 91 C SER M 39 31.245 -93.391 -32.059 1.00140.20 ATOM 92 O SER M 39 30.643 -93.364 -33.133 1.00152.56 ATOM 93 N GLU M 40 30.828 -94.097 -31.012 1.00219.57 ATOM 94 CA GLU M 40 29.649 -94.955 -31.076 1.00238.97 ATOM 95 C GLU M 40 28.342 -94.218 -31.346 1.00141.28 ATOM 96 O GLU M 40 27.511 -94.683 -32.126 1.00143.57 ATOM 97 N GLY M 41 28.160 -93.071 -30.702 1.00196.45 ATOM 98 CA GLY M 41 26.947 -92.295 -30.882 1.00196.36 ATOM 99 C GLY M 41 25.755 -92.907 -30.171 1.00212.43 ATOM 100 O GLY M 41 25.908 -93.749 -29.287 1.00282.71 ATOM 101 N ASP M 42 24.560 -92.478 -30.565 1.00158.05 ATOM 102 CA ASP M 42 23.311 -92.976 -29.978 1.00137.75 ATOM 103 C ASP M 42 22.915 -92.527 -28.551 1.00128.09 ATOM 104 O ASP M 42 21.835 -92.883 -28.080 1.00128.19 ATOM 105 N VAL M 43 23.755 -91.743 -27.874 1.00158.53 ATOM 106 CA VAL M 43 23.395 -91.158 -26.569 1.00143.68 ATOM 107 C VAL M 43 22.868 -92.063 -25.434 1.00151.19 ATOM 108 O VAL M 43 21.817 -91.776 -24.862 1.00153.99 ATOM 109 N VAL M 44 23.572 -93.148 -25.119 1.00154.40 ATOM 110 CA VAL M 44 23.096 -94.129 -24.146 1.00122.51 ATOM 111 C VAL M 44 23.064 -93.491 -22.772 1.00146.50 ATOM 112 O VAL M 44 24.052 -92.892 -22.347 1.00196.35 ATOM 113 N CYS M 45 21.933 -93.617 -22.077 1.00175.48 ATOM 114 CA CYS M 45 21.773 -93.041 -20.731 1.00160.94 ATOM 115 C CYS M 45 22.764 -93.631 -19.751 1.00169.39 ATOM 116 O CYS M 45 23.124 -94.806 -19.839 1.00237.90 ATOM 117 N ALA M 46 23.198 -92.814 -18.802 1.00128.91 ATOM 118 CA ALA M 46 24.118 -93.276 -17.779 1.00126.75 ATOM 119 C ALA M 46 23.185 -93.790 -16.692 1.00136.92 ATOM 120 O ALA M 46 23.570 -93.936 -15.532 1.00152.11 ATOM 121 N LEU M 47 21.944 -94.055 -17.096 1.00179.06 ATOM 122 CA LEU M 47 20.916 -94.536 -16.184 1.00200.04 ATOM 123 C LEU M 47 20.312 -95.899 -16.520 1.00202.06 ATOM 124 O LEU M 47 20.404 -96.825 -15.714 1.00207.77 ATOM 125 N CYS M 48 19.689 -96.036 -17.690 1.00104.17 ATOM 126 CA CYS M 48 19.080 -97.327 -18.027 1.00104.96 ATOM 127 C CYS M 48 20.111 -98.005 -18.894 1.00107.20 ATOM 128 O CYS M 48 20.105 -99.215 -19.121 1.00129.25 ATOM 129 N GLY M 49 21.004 -97.152 -19.362 1.00259.70 ATOM 130 CA GLY M 49 22.150 -97.492 -20.210 1.00243.24 ATOM 131 C GLY M 49 21.692 -98.255 -21.454 1.00270.90 ATOM 132 O GLY M 49 22.170 -99.346 -21.761 1.00351.52 ATOM 133 N LEU M 50 20.739 -97.642 -22.152 1.00122.19 ATOM 134 CA LEU M 50 20.134 -98.201 -23.339 1.00109.93 ATOM 135 C LEU M 50 20.521 -97.308 -24.514 1.00115.12 ATOM 136 O LEU M 50 21.516 -96.604 -24.438 1.00114.27 ATOM 137 N VAL M 51 19.753 -97.343 -25.595 1.00136.29 ATOM 138 CA VAL M 51 20.088 -96.583 -26.779 1.00101.02 ATOM 139 C VAL M 51 18.921 -95.712 -27.208 1.00113.04 ATOM 140 O VAL M 51 17.800 -95.850 -26.712 1.00124.08 ATOM 141 N LEU M 52 19.212 -94.803 -28.132 1.00127.05 ATOM 142 CA LEU M 52 18.208 -93.938 -28.725 1.00114.94 ATOM 143 C LEU M 52 18.609 -93.612 -30.163 1.00136.44 ATOM 144 O LEU M 52 19.433 -92.724 -30.383 1.00124.18 ATOM 145 N SER M 53 18.034 -94.305 -31.142 1.00233.37 ATOM 146 CA SER M 53 18.354 -93.993 -32.519 1.00229.36 ATOM 147 C SER M 53 19.814 -94.348 -32.780 1.00196.37 ATOM 148 O SER M 53 20.404 -95.180 -32.091 1.00143.88 ATOM 149 N ASP M 54 20.353 -93.757 -33.843 1.00192.39 ATOM 150 CA ASP M 54 21.742 -93.954 -34.237 1.00137.50 ATOM 151 C ASP M 54 22.526 -92.653 -34.431 1.00149.81 ATOM 152 O ASP M 54 23.701 -92.691 -34.796 1.00167.91 ATOM 153 N LYS M 55 21.863 -91.535 -34.173 1.00165.61 ATOM 154 CA LYS M 55 22.500 -90.271 -34.406 1.00135.87 ATOM 155 C LYS M 55 22.733 -90.243 -35.909 1.00134.75 ATOM 156 O LYS M 55 21.795 -90.310 -36.703 1.00221.54 ATOM 157 N LEU M 56 23.995 -90.126 -36.279 1.00212.89 ATOM 158 CA LEU M 56 24.423 -89.990 -37.656 1.00226.34 ATOM 159 C LEU M 56 24.191 -88.577 -38.181 1.00230.23 ATOM 160 O LEU M 56 23.676 -88.403 -39.286 1.00312.33 ATOM 161 N VAL M 57 24.561 -87.570 -37.398 1.00 94.60 ATOM 162 CA VAL M 57 24.411 -86.212 -37.865 1.00 93.59 ATOM 163 C VAL M 57 25.572 -85.337 -37.422 1.00 99.59 ATOM 164 O VAL M 57 25.536 -84.783 -36.331 1.00158.94 ATOM 165 N ASP M 58 26.594 -85.201 -38.267 1.00149.60 ATOM 166 CA ASP M 58 27.759 -84.357 -37.954 1.00147.48 ATOM 167 C ASP M 58 27.532 -82.857 -38.230 1.00202.24 ATOM 168 O ASP M 58 27.581 -82.409 -39.382 1.00154.03 ATOM 169 N THR M 59 27.289 -82.093 -37.163 1.00234.25 ATOM 170 CA THR M 59 27.086 -80.648 -37.260 1.00154.17 ATOM 171 C THR M 59 28.403 -79.887 -37.481 1.00194.41 ATOM 172 O THR M 59 28.389 -78.778 -38.008 1.00178.45 ATOM 173 N ARG M 60 29.528 -80.471 -37.111 1.00257.72 ATOM 174 CA ARG M 60 30.802 -79.795 -37.309 1.00218.64 ATOM 175 C ARG M 60 31.099 -79.589 -38.794 1.00209.62 ATOM 176 O ARG M 60 31.870 -78.706 -39.171 1.00190.13 ATOM 177 N SER M 61 30.580 -80.536 -39.574 1.00196.91 ATOM 178 CA SER M 61 30.811 -80.631 -41.005 1.00164.77 ATOM 179 C SER M 61 29.824 -79.793 -41.786 1.00161.17 ATOM 180 O SER M 61 28.947 -80.308 -42.479 1.00162.91 ATOM 181 N GLU M 62 29.992 -78.488 -41.667 1.00172.55 ATOM 182 CA GLU M 62 29.196 -77.520 -42.412 1.00175.51 ATOM 183 C GLU M 62 29.754 -77.264 -43.814 1.00199.29 ATOM 184 O GLU M 62 30.930 -77.510 -44.081 1.00204.96 ATOM 185 N TRP M 63 28.897 -76.764 -44.698 1.00170.75 ATOM 186 CA TRP M 63 29.275 -76.430 -46.065 1.00166.79 ATOM 187 C TRP M 63 30.271 -75.263 -46.090 1.00210.73 ATOM 188 O TRP M 63 29.930 -74.134 -45.720 1.00199.63 ATOM 189 N ARG M 64 31.503 -75.554 -46.507 1.00312.11 ATOM 190 CA ARG M 64 32.552 -74.540 -46.639 1.00282.68 ATOM 191 C ARG M 64 32.554 -73.927 -48.041 1.00331.09 ATOM 192 O ARG M 64 31.666 -74.211 -48.848 1.00383.36 ATOM 193 N THR M 65 33.547 -73.084 -48.318 1.00216.06 ATOM 194 CA THR M 65 33.660 -72.402 -49.608 1.00264.24 ATOM 195 C THR M 65 33.958 -73.353 -50.780 1.00299.07 ATOM 196 O THR M 65 33.608 -73.057 -51.925 1.00279.88 ATOM 197 N PHE M 66 34.591 -74.490 -50.478 1.00265.06 ATOM 198 CA PHE M 66 34.906 -75.547 -51.459 1.00260.97 ATOM 199 C PHE M 66 35.451 -75.023 -52.794 1.00275.82 ATOM 200 O PHE M 66 36.637 -75.190 -53.103 1.00277.43 ATOM 201 ZN ZN M 346 17.785 -94.917 -18.726 1.00193.21 TER