HEADER RNA-BINDING PROTEIN/RNA 04-SEP-03 1UN6 TITLE THE CRYSTAL STRUCTURE OF A ZINC FINGER - RNA COMPLEX REVEALS TWO TITLE 2 MODES OF MOLECULAR RECOGNITION COMPND MOL_ID: 1; COMPND 2 MOLECULE: TRANSCRIPTION FACTOR IIIA; COMPND 3 CHAIN: B, C, D; COMPND 4 FRAGMENT: FINGERS 4,5 AND 6, RESIDUES 127 - 212 UNDER SWISSPROT NUMBERING FOR COMPND 5 SOMATIC ; COMPND 6 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 3.10 ANGSTORMS DBREF 1UN6 C 104 104 PDB 1UN6 1UN6 104 104 DBREF 1UN6 C 105 190 UNP P03001 TF3A_XENLA 127 212 SEQRES 1 C 30 GLY TYR PRO CYS LYS LYS ASP ASP SER CYS SER PHE VAL SEQRES 2 C 30 GLY LYS THR TRP THR LEU TYR LEU LYS HIS VAL ALA GLU SEQRES 3 C 30 CYS HIS GLN ASP ATOM 1 N GLY C 161 19.038 19.283 30.061 1.00 69.75 ATOM 2 CA GLY C 161 19.144 17.842 29.935 1.00 69.69 ATOM 3 C GLY C 161 19.012 17.193 28.568 1.00 71.58 ATOM 4 O GLY C 161 19.993 17.127 27.846 1.00 73.33 ATOM 5 N TYR C 162 17.815 16.712 28.222 1.00 72.13 ATOM 6 CA TYR C 162 17.511 16.005 26.952 1.00 73.19 ATOM 7 C TYR C 162 17.529 14.505 27.240 1.00 74.42 ATOM 8 O TYR C 162 18.334 13.762 26.681 1.00 72.94 ATOM 9 CB TYR C 162 18.533 16.272 25.829 1.00 72.67 ATOM 10 CG TYR C 162 18.598 17.689 25.313 1.00 71.56 ATOM 11 CD1 TYR C 162 17.474 18.323 24.788 1.00 71.30 ATOM 12 CD2 TYR C 162 19.782 18.411 25.394 1.00 71.60 ATOM 13 CE1 TYR C 162 17.532 19.656 24.367 1.00 71.72 ATOM 14 CE2 TYR C 162 19.850 19.735 24.981 1.00 72.44 ATOM 15 CZ TYR C 162 18.727 20.355 24.474 1.00 71.62 ATOM 16 OH TYR C 162 18.817 21.681 24.124 1.00 70.18 ATOM 17 N PRO C 163 16.637 14.045 28.126 1.00 76.44 ATOM 18 CA PRO C 163 16.526 12.638 28.519 1.00 77.56 ATOM 19 C PRO C 163 15.805 11.757 27.516 1.00 77.71 ATOM 20 O PRO C 163 14.752 12.126 27.001 1.00 77.65 ATOM 21 CB PRO C 163 15.772 12.722 29.837 1.00 78.29 ATOM 22 CG PRO C 163 14.808 13.829 29.561 1.00 78.61 ATOM 23 CD PRO C 163 15.703 14.873 28.911 1.00 77.68 ATOM 24 N CYS C 164 16.374 10.584 27.260 1.00 78.23 ATOM 25 CA CYS C 164 15.782 9.639 26.332 1.00 78.66 ATOM 26 C CYS C 164 14.605 8.960 27.014 1.00 78.79 ATOM 27 O CYS C 164 14.753 8.342 28.075 1.00 78.76 ATOM 28 CB CYS C 164 16.808 8.592 25.906 1.00 79.77 ATOM 29 SG CYS C 164 16.181 7.442 24.654 1.00 82.55 ATOM 30 N LYS C 165 13.437 9.075 26.392 1.00 79.02 ATOM 31 CA LYS C 165 12.211 8.502 26.931 1.00 79.09 ATOM 32 C LYS C 165 11.625 7.494 25.955 1.00 77.37 ATOM 33 O LYS C 165 10.411 7.331 25.888 1.00 76.77 ATOM 34 CB LYS C 165 11.191 9.623 27.191 1.00 81.26 ATOM 35 CG LYS C 165 11.745 10.788 28.022 1.00 84.17 ATOM 36 CD LYS C 165 10.782 11.974 28.084 1.00 87.23 ATOM 37 CE LYS C 165 11.392 13.157 28.854 1.00 88.94 ATOM 38 NZ LYS C 165 10.455 14.315 29.025 1.00 88.05 ATOM 39 N LYS C 166 12.494 6.811 25.214 1.00 75.96 ATOM 40 CA LYS C 166 12.069 5.835 24.210 1.00 74.59 ATOM 41 C LYS C 166 11.823 4.429 24.753 1.00 73.96 ATOM 42 O LYS C 166 11.430 3.536 24.010 1.00 72.91 ATOM 43 CB LYS C 166 13.115 5.754 23.102 1.00 74.39 ATOM 44 CG LYS C 166 12.552 5.700 21.702 1.00 74.28 ATOM 45 CD LYS C 166 12.447 7.090 21.122 1.00 75.91 ATOM 46 CE LYS C 166 11.944 7.049 19.696 1.00 78.35 ATOM 47 NZ LYS C 166 11.897 8.416 19.097 1.00 80.03 ATOM 48 N ASP C 167 12.072 4.232 26.040 1.00 73.98 ATOM 49 CA ASP C 167 11.879 2.932 26.672 1.00 74.20 ATOM 50 C ASP C 167 12.427 3.006 28.087 1.00 75.00 ATOM 51 O ASP C 167 13.379 3.738 28.355 1.00 74.40 ATOM 52 CB ASP C 167 12.621 1.836 25.900 1.00 74.01 ATOM 53 CG ASP C 167 12.311 0.434 26.415 1.00 74.24 ATOM 54 OD1 ASP C 167 12.168 0.249 27.645 1.00 73.54 ATOM 55 OD2 ASP C 167 12.223 -0.493 25.585 1.00 73.48 ATOM 56 N ASP C 168 11.821 2.240 28.987 1.00 76.41 ATOM 57 CA ASP C 168 12.241 2.216 30.379 1.00 77.60 ATOM 58 C ASP C 168 13.681 1.741 30.477 1.00 76.68 ATOM 59 O ASP C 168 14.513 2.401 31.095 1.00 77.10 ATOM 60 CB ASP C 168 11.348 1.280 31.195 1.00 80.42 ATOM 61 CG ASP C 168 9.867 1.506 30.937 1.00 83.38 ATOM 62 OD1 ASP C 168 9.047 0.979 31.722 1.00 85.45 ATOM 63 OD2 ASP C 168 9.519 2.195 29.952 1.00 84.54 ATOM 64 N SER C 169 13.968 0.597 29.861 1.00 75.09 ATOM 65 CA SER C 169 15.309 0.030 29.888 1.00 73.33 ATOM 66 C SER C 169 16.369 1.094 29.640 1.00 73.38 ATOM 67 O SER C 169 17.454 1.036 30.225 1.00 74.52 ATOM 68 CB SER C 169 15.454 -1.069 28.839 1.00 72.36 ATOM 69 OG SER C 169 15.681 -0.527 27.548 1.00 71.07 ATOM 70 N CYS C 170 16.065 2.065 28.777 1.00 71.67 ATOM 71 CA CYS C 170 17.028 3.125 28.489 1.00 69.73 ATOM 72 C CYS C 170 16.862 4.340 29.396 1.00 68.82 ATOM 73 O CYS C 170 15.773 4.880 29.563 1.00 69.83 ATOM 74 CB CYS C 170 16.952 3.568 27.031 1.00 68.24 ATOM 75 SG CYS C 170 18.257 4.748 26.645 1.00 67.13 ATOM 76 N SER C 171 17.973 4.765 29.969 1.00 67.23 ATOM 77 CA SER C 171 17.998 5.886 30.879 1.00 65.66 ATOM 78 C SER C 171 19.141 6.797 30.470 1.00 64.45 ATOM 79 O SER C 171 19.960 7.227 31.294 1.00 64.47 ATOM 80 CB SER C 171 18.203 5.362 32.302 1.00 68.12 ATOM 81 OG SER C 171 18.870 4.101 32.302 1.00 67.45 ATOM 82 N PHE C 172 19.197 7.063 29.172 1.00 61.77 ATOM 83 CA PHE C 172 20.220 7.920 28.595 1.00 57.95 ATOM 84 C PHE C 172 19.805 9.382 28.754 1.00 57.13 ATOM 85 O PHE C 172 18.620 9.702 28.856 1.00 56.15 ATOM 86 CB PHE C 172 20.387 7.581 27.110 1.00 53.83 ATOM 87 CG PHE C 172 21.282 8.528 26.361 1.00 49.85 ATOM 88 CD1 PHE C 172 22.662 8.417 26.440 1.00 47.41 ATOM 89 CD2 PHE C 172 20.744 9.544 25.584 1.00 47.56 ATOM 90 CE1 PHE C 172 23.489 9.304 25.759 1.00 44.52 ATOM 91 CE2 PHE C 172 21.571 10.433 24.903 1.00 45.47 ATOM 92 CZ PHE C 172 22.942 10.308 24.994 1.00 44.13 ATOM 93 N VAL C 173 20.793 10.260 28.796 1.00 57.18 ATOM 94 CA VAL C 173 20.540 11.686 28.916 1.00 59.89 ATOM 95 C VAL C 173 21.649 12.400 28.167 1.00 61.41 ATOM 96 O VAL C 173 22.769 12.514 28.670 1.00 62.40 ATOM 97 CB VAL C 173 20.552 12.159 30.392 1.00 60.45 ATOM 98 CG1 VAL C 173 20.349 13.672 30.460 1.00 57.39 ATOM 99 CG2 VAL C 173 19.460 11.431 31.185 1.00 60.89 ATOM 100 N GLY C 174 21.339 12.868 26.961 1.00 61.69 ATOM 101 CA GLY C 174 22.334 13.557 26.163 1.00 62.24 ATOM 102 C GLY C 174 22.484 14.998 26.599 1.00 62.56 ATOM 103 O GLY C 174 21.579 15.547 27.211 1.00 60.75 ATOM 104 N LYS C 175 23.623 15.604 26.281 1.00 63.68 ATOM 105 CA LYS C 175 23.883 16.986 26.648 1.00 65.61 ATOM 106 C LYS C 175 23.347 18.012 25.653 1.00 65.81 ATOM 107 O LYS C 175 23.216 19.187 25.997 1.00 66.86 ATOM 108 CB LYS C 175 25.381 17.199 26.847 1.00 67.92 ATOM 109 CG LYS C 175 25.884 16.839 28.245 1.00 71.94 ATOM 110 CD LYS C 175 25.504 15.415 28.654 1.00 74.99 ATOM 111 CE LYS C 175 26.066 15.055 30.034 1.00 75.76 ATOM 112 NZ LYS C 175 25.719 13.666 30.450 1.00 74.67 ATOM 113 N THR C 176 23.047 17.576 24.429 1.00 64.97 ATOM 114 CA THR C 176 22.510 18.465 23.393 1.00 63.23 ATOM 115 C THR C 176 21.484 17.729 22.562 1.00 63.81 ATOM 116 O THR C 176 21.492 16.501 22.503 1.00 64.60 ATOM 117 CB THR C 176 23.573 18.954 22.405 1.00 61.78 ATOM 118 OG1 THR C 176 23.911 17.889 21.509 1.00 60.60 ATOM 119 CG2 THR C 176 24.807 19.428 23.137 1.00 61.36 ATOM 120 N TRP C 177 20.615 18.497 21.906 1.00 64.54 ATOM 121 CA TRP C 177 19.560 17.961 21.048 1.00 62.74 ATOM 122 C TRP C 177 20.170 17.081 19.974 1.00 61.86 ATOM 123 O TRP C 177 19.677 15.988 19.701 1.00 60.45 ATOM 124 CB TRP C 177 18.794 19.094 20.387 1.00 62.12 ATOM 125 CG TRP C 177 17.811 18.609 19.373 1.00 61.87 ATOM 126 CD1 TRP C 177 17.874 18.775 18.015 1.00 60.93 ATOM 127 CD2 TRP C 177 16.610 17.883 19.633 1.00 58.95 ATOM 128 NE1 TRP C 177 16.780 18.196 17.423 1.00 59.04 ATOM 129 CE2 TRP C 177 15.991 17.643 18.394 1.00 57.04 ATOM 130 CE3 TRP C 177 15.998 17.414 20.794 1.00 60.00 ATOM 131 CZ2 TRP C 177 14.795 16.960 18.285 1.00 57.25 ATOM 132 CZ3 TRP C 177 14.799 16.730 20.681 1.00 60.17 ATOM 133 CH2 TRP C 177 14.213 16.511 19.435 1.00 58.74 ATOM 134 N THR C 178 21.233 17.574 19.352 1.00 60.19 ATOM 135 CA THR C 178 21.915 16.794 18.343 1.00 60.92 ATOM 136 C THR C 178 22.300 15.440 18.938 1.00 61.57 ATOM 137 O THR C 178 21.986 14.387 18.374 1.00 61.69 ATOM 138 CB THR C 178 23.194 17.480 17.882 1.00 61.47 ATOM 139 OG1 THR C 178 22.863 18.627 17.096 1.00 63.06 ATOM 140 CG2 THR C 178 24.042 16.523 17.063 1.00 62.77 ATOM 141 N LEU C 179 22.976 15.470 20.084 1.00 61.11 ATOM 142 CA LEU C 179 23.406 14.237 20.723 1.00 59.97 ATOM 143 C LEU C 179 22.253 13.323 21.081 1.00 60.12 ATOM 144 O LEU C 179 22.343 12.112 20.873 1.00 60.42 ATOM 145 CB LEU C 179 24.247 14.539 21.953 1.00 58.86 ATOM 146 CG LEU C 179 25.536 15.282 21.602 1.00 60.82 ATOM 147 CD1 LEU C 179 26.578 15.037 22.691 1.00 60.12 ATOM 148 CD2 LEU C 179 26.067 14.804 20.244 1.00 60.54 ATOM 149 N TYR C 180 21.172 13.880 21.621 1.00 59.53 ATOM 150 CA TYR C 180 20.025 13.050 21.953 1.00 59.72 ATOM 151 C TYR C 180 19.536 12.368 20.679 1.00 60.61 ATOM 152 O TYR C 180 19.045 11.240 20.721 1.00 60.99 ATOM 153 CB TYR C 180 18.870 13.871 22.511 1.00 59.49 ATOM 154 CG TYR C 180 17.537 13.179 22.300 1.00 59.13 ATOM 155 CD1 TYR C 180 17.167 12.093 23.085 1.00 58.56 ATOM 156 CD2 TYR C 180 16.685 13.559 21.252 1.00 59.39 ATOM 157 CE1 TYR C 180 15.989 11.393 22.836 1.00 59.67 ATOM 158 CE2 TYR C 180 15.506 12.868 20.987 1.00 58.97 ATOM 159 CZ TYR C 180 15.166 11.781 21.785 1.00 60.27 ATOM 160 OH TYR C 180 14.026 11.053 21.522 1.00 60.69 ATOM 161 N LEU C 181 19.655 13.061 19.548 1.00 59.93 ATOM 162 CA LEU C 181 19.205 12.491 18.291 1.00 59.98 ATOM 163 C LEU C 181 20.104 11.361 17.829 1.00 61.03 ATOM 164 O LEU C 181 19.605 10.307 17.424 1.00 61.96 ATOM 165 CB LEU C 181 19.106 13.559 17.198 1.00 58.09 ATOM 166 CG LEU C 181 17.963 14.566 17.358 1.00 57.52 ATOM 167 CD1 LEU C 181 17.810 15.338 16.072 1.00 56.50 ATOM 168 CD2 LEU C 181 16.653 13.857 17.697 1.00 56.01 ATOM 169 N LYS C 182 21.419 11.565 17.884 1.00 60.68 ATOM 170 CA LYS C 182 22.337 10.514 17.463 1.00 61.08 ATOM 171 C LYS C 182 22.054 9.291 18.305 1.00 61.13 ATOM 172 O LYS C 182 22.060 8.170 17.806 1.00 61.58 ATOM 173 CB LYS C 182 23.791 10.949 17.634 1.00 61.22 ATOM 174 CG LYS C 182 24.136 12.143 16.772 1.00 64.56 ATOM 175 CD LYS C 182 25.600 12.528 16.844 1.00 66.33 ATOM 176 CE LYS C 182 25.868 13.728 15.948 1.00 67.12 ATOM 177 NZ LYS C 182 27.322 13.998 15.775 1.00 69.76 ATOM 178 N HIS C 183 21.787 9.509 19.587 1.00 60.64 ATOM 179 CA HIS C 183 21.483 8.398 20.464 1.00 60.27 ATOM 180 C HIS C 183 20.394 7.550 19.811 1.00 61.64 ATOM 181 O HIS C 183 20.598 6.373 19.538 1.00 63.47 ATOM 182 CB HIS C 183 21.008 8.897 21.822 1.00 57.29 ATOM 183 CG HIS C 183 20.572 7.799 22.736 1.00 55.01 ATOM 184 ND1 HIS C 183 21.431 6.819 23.179 1.00 53.21 ATOM 185 CD2 HIS C 183 19.359 7.499 23.258 1.00 54.15 ATOM 186 CE1 HIS C 183 20.765 5.962 23.932 1.00 53.00 ATOM 187 NE2 HIS C 183 19.506 6.352 23.995 1.00 52.18 ATOM 188 N VAL C 184 19.241 8.147 19.550 1.00 62.24 ATOM 189 CA VAL C 184 18.148 7.420 18.922 1.00 63.21 ATOM 190 C VAL C 184 18.552 6.869 17.551 1.00 64.19 ATOM 191 O VAL C 184 18.063 5.822 17.116 1.00 63.06 ATOM 192 CB VAL C 184 16.915 8.338 18.777 1.00 62.81 ATOM 193 CG1 VAL C 184 15.869 7.713 17.865 1.00 62.11 ATOM 194 CG2 VAL C 184 16.317 8.576 20.144 1.00 64.30 ATOM 195 N ALA C 185 19.463 7.572 16.885 1.00 66.19 ATOM 196 CA ALA C 185 19.926 7.175 15.555 1.00 68.76 ATOM 197 C ALA C 185 20.567 5.799 15.535 1.00 69.74 ATOM 198 O ALA C 185 20.593 5.138 14.500 1.00 69.27 ATOM 199 CB ALA C 185 20.916 8.211 15.001 1.00 68.84 ATOM 200 N GLU C 186 21.089 5.368 16.674 1.00 70.90 ATOM 201 CA GLU C 186 21.724 4.072 16.730 1.00 72.79 ATOM 202 C GLU C 186 21.096 3.096 17.711 1.00 72.99 ATOM 203 O GLU C 186 20.719 1.986 17.334 1.00 74.27 ATOM 204 CB GLU C 186 23.215 4.244 17.023 1.00 74.09 ATOM 205 CG GLU C 186 23.531 5.286 18.058 1.00 79.11 ATOM 206 CD GLU C 186 25.020 5.591 18.145 1.00 82.56 ATOM 207 OE1 GLU C 186 25.805 4.660 18.441 1.00 84.02 ATOM 208 OE2 GLU C 186 25.404 6.763 17.917 1.00 84.20 ATOM 209 N CYS C 187 20.955 3.510 18.960 1.00 73.53 ATOM 210 CA CYS C 187 20.404 2.633 19.982 1.00 74.19 ATOM 211 C CYS C 187 19.002 2.067 19.755 1.00 76.06 ATOM 212 O CYS C 187 18.702 0.978 20.240 1.00 75.48 ATOM 213 CB CYS C 187 20.484 3.331 21.341 1.00 72.55 ATOM 214 SG CYS C 187 22.200 3.690 21.845 1.00 68.44 ATOM 215 N HIS C 188 18.153 2.777 19.011 1.00 78.84 ATOM 216 CA HIS C 188 16.783 2.309 18.758 1.00 81.06 ATOM 217 C HIS C 188 16.447 2.377 17.271 1.00 84.85 ATOM 218 O HIS C 188 15.991 3.410 16.792 1.00 85.39 ATOM 219 CB HIS C 188 15.777 3.167 19.542 1.00 78.08 ATOM 220 CG HIS C 188 16.163 3.398 20.973 1.00 76.95 ATOM 221 ND1 HIS C 188 16.162 2.395 21.920 1.00 75.28 ATOM 222 CD2 HIS C 188 16.618 4.506 21.604 1.00 75.39 ATOM 223 CE1 HIS C 188 16.602 2.874 23.069 1.00 72.80 ATOM 224 NE2 HIS C 188 16.887 4.152 22.903 1.00 73.26 ATOM 225 N GLN C 189 16.671 1.276 16.550 1.00 89.22 ATOM 226 CA GLN C 189 16.400 1.205 15.109 1.00 92.88 ATOM 227 C GLN C 189 15.303 0.189 14.807 1.00 95.18 ATOM 228 O GLN C 189 15.281 -0.890 15.402 1.00 96.41 ATOM 229 CB GLN C 189 17.673 0.818 14.357 1.00 93.96 ATOM 230 CG GLN C 189 18.821 1.797 14.550 1.00 97.83 ATOM 231 CD GLN C 189 18.546 3.168 13.930 1.00100.30 ATOM 232 OE1 GLN C 189 18.585 3.331 12.705 1.00101.42 ATOM 233 NE2 GLN C 189 18.259 4.158 14.778 1.00100.70 ATOM 234 N ASP C 190 14.412 0.536 13.874 1.00 97.63 ATOM 235 CA ASP C 190 13.271 -0.308 13.470 1.00 99.54 ATOM 236 C ASP C 190 12.055 -0.087 14.384 1.00100.24 ATOM 237 O ASP C 190 11.680 -1.044 15.101 1.00100.68 ATOM 238 CB ASP C 190 13.629 -1.804 13.490 1.00100.82 ATOM 239 CG ASP C 190 14.764 -2.154 12.545 1.00102.68 ATOM 240 OD1 ASP C 190 14.691 -1.777 11.355 1.00103.95 ATOM 241 OD2 ASP C 190 15.725 -2.820 12.994 1.00103.40 ATOM 242 OXT ASP C 190 11.493 1.032 14.385 1.00100.05 TER