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 29 MET TYR VAL CYS HIS PHE GLU ASN CYS GLY LYS ALA PHE SEQRES 2 C 29 LYS LYS HIS ASN GLN LEU LYS VAL HIS GLN PHE SER HIS SEQRES 3 C 29 THR GLN GLN ATOM 1 N MET C 104 2.151 51.667 36.167 1.00107.82 ATOM 2 CA MET C 104 3.092 51.945 35.048 1.00108.09 ATOM 3 C MET C 104 4.543 51.904 35.507 1.00108.04 ATOM 4 O MET C 104 4.841 52.104 36.688 1.00107.98 ATOM 5 CB MET C 104 2.788 53.307 34.425 1.00109.03 ATOM 6 CG MET C 104 1.494 53.351 33.621 1.00111.28 ATOM 7 SD MET C 104 1.459 52.167 32.235 1.00113.11 ATOM 8 CE MET C 104 2.507 53.015 31.016 1.00111.98 ATOM 9 N TYR C 105 5.438 51.641 34.556 1.00107.87 ATOM 10 CA TYR C 105 6.873 51.552 34.821 1.00106.84 ATOM 11 C TYR C 105 7.625 52.527 33.938 1.00107.19 ATOM 12 O TYR C 105 7.589 52.433 32.713 1.00106.20 ATOM 13 CB TYR C 105 7.365 50.125 34.568 1.00104.53 ATOM 14 CG TYR C 105 6.835 49.129 35.573 1.00101.94 ATOM 15 CD1 TYR C 105 7.385 49.046 36.850 1.00100.04 ATOM 16 CD2 TYR C 105 5.756 48.293 35.262 1.00100.68 ATOM 17 CE1 TYR C 105 6.880 48.159 37.794 1.00 99.02 ATOM 18 CE2 TYR C 105 5.241 47.402 36.201 1.00 99.11 ATOM 19 CZ TYR C 105 5.811 47.341 37.465 1.00 98.89 ATOM 20 OH TYR C 105 5.325 46.462 38.405 1.00 98.32 ATOM 21 N VAL C 106 8.313 53.461 34.579 1.00108.85 ATOM 22 CA VAL C 106 9.063 54.483 33.869 1.00111.03 ATOM 23 C VAL C 106 10.543 54.455 34.214 1.00111.70 ATOM 24 O VAL C 106 10.917 54.271 35.373 1.00112.00 ATOM 25 CB VAL C 106 8.512 55.887 34.205 1.00111.53 ATOM 26 CG1 VAL C 106 9.356 56.956 33.530 1.00112.43 ATOM 27 CG2 VAL C 106 7.059 55.991 33.766 1.00111.47 ATOM 28 N CYS C 107 11.382 54.645 33.203 1.00112.58 ATOM 29 CA CYS C 107 12.821 54.658 33.409 1.00114.40 ATOM 30 C CYS C 107 13.310 56.088 33.575 1.00115.98 ATOM 31 O CYS C 107 12.658 57.037 33.134 1.00115.92 ATOM 32 CB CYS C 107 13.540 54.002 32.232 1.00114.15 ATOM 33 SG CYS C 107 13.124 54.685 30.630 1.00112.77 ATOM 34 N HIS C 108 14.462 56.240 34.214 1.00117.52 ATOM 35 CA HIS C 108 15.020 57.561 34.440 1.00119.00 ATOM 36 C HIS C 108 16.459 57.617 33.974 1.00119.56 ATOM 37 O HIS C 108 17.185 58.543 34.330 1.00119.65 ATOM 38 CB HIS C 108 14.965 57.907 35.926 1.00119.48 ATOM 39 CG HIS C 108 13.642 57.625 36.561 1.00120.04 ATOM 40 ND1 HIS C 108 12.466 58.175 36.101 1.00120.51 ATOM 41 CD2 HIS C 108 13.307 56.839 37.610 1.00120.33 ATOM 42 CE1 HIS C 108 11.462 57.739 36.841 1.00120.86 ATOM 43 NE2 HIS C 108 11.945 56.926 37.763 1.00120.74 ATOM 44 N PHE C 109 16.870 56.627 33.186 1.00120.26 ATOM 45 CA PHE C 109 18.243 56.570 32.691 1.00121.01 ATOM 46 C PHE C 109 18.857 57.965 32.636 1.00121.39 ATOM 47 O PHE C 109 19.801 58.277 33.362 1.00121.68 ATOM 48 CB PHE C 109 18.295 55.944 31.296 1.00120.49 ATOM 49 CG PHE C 109 19.684 55.857 30.735 1.00119.63 ATOM 50 CD1 PHE C 109 20.621 55.005 31.303 1.00119.38 ATOM 51 CD2 PHE C 109 20.066 56.657 29.667 1.00119.30 ATOM 52 CE1 PHE C 109 21.917 54.952 30.819 1.00119.38 ATOM 53 CE2 PHE C 109 21.361 56.611 29.175 1.00119.19 ATOM 54 CZ PHE C 109 22.289 55.757 29.753 1.00119.43 ATOM 55 N GLU C 110 18.300 58.798 31.767 1.00121.70 ATOM 56 CA GLU C 110 18.748 60.171 31.593 1.00121.56 ATOM 57 C GLU C 110 17.486 60.955 31.271 1.00122.06 ATOM 58 O GLU C 110 17.403 61.661 30.265 1.00122.17 ATOM 59 CB GLU C 110 19.757 60.255 30.445 1.00121.02 ATOM 60 CG GLU C 110 21.104 60.842 30.840 1.00120.21 ATOM 61 CD GLU C 110 22.219 60.441 29.888 1.00119.89 ATOM 62 OE1 GLU C 110 22.034 60.580 28.662 1.00119.37 ATOM 63 OE2 GLU C 110 23.283 59.992 30.366 1.00119.31 ATOM 64 N ASN C 111 16.496 60.796 32.145 1.00122.62 ATOM 65 CA ASN C 111 15.206 61.453 32.010 1.00123.06 ATOM 66 C ASN C 111 14.488 60.918 30.773 1.00124.22 ATOM 67 O ASN C 111 13.692 61.622 30.151 1.00124.50 ATOM 68 CB ASN C 111 15.395 62.967 31.908 1.00122.00 ATOM 69 CG ASN C 111 16.350 63.508 32.959 1.00121.23 ATOM 70 OD1 ASN C 111 16.230 63.200 34.145 1.00120.17 ATOM 71 ND2 ASN C 111 17.301 64.327 32.526 1.00121.19 ATOM 72 N CYS C 112 14.777 59.661 30.437 1.00125.12 ATOM 73 CA CYS C 112 14.189 58.984 29.280 1.00125.42 ATOM 74 C CYS C 112 12.673 59.171 29.177 1.00124.88 ATOM 75 O CYS C 112 12.132 59.339 28.086 1.00125.17 ATOM 76 CB CYS C 112 14.522 57.487 29.331 1.00126.31 ATOM 77 SG CYS C 112 13.856 56.485 27.964 1.00128.79 ATOM 78 N GLY C 113 11.987 59.138 30.311 1.00124.02 ATOM 79 CA GLY C 113 10.550 59.313 30.285 1.00122.89 ATOM 80 C GLY C 113 9.796 58.050 29.918 1.00122.55 ATOM 81 O GLY C 113 8.925 57.623 30.673 1.00123.06 ATOM 82 N LYS C 114 10.125 57.455 28.770 1.00121.56 ATOM 83 CA LYS C 114 9.466 56.232 28.290 1.00120.33 ATOM 84 C LYS C 114 8.696 55.466 29.371 1.00119.90 ATOM 85 O LYS C 114 9.255 55.089 30.401 1.00119.71 ATOM 86 CB LYS C 114 10.493 55.301 27.640 1.00119.68 ATOM 87 CG LYS C 114 10.876 55.657 26.207 1.00119.02 ATOM 88 CD LYS C 114 9.704 55.458 25.255 1.00118.59 ATOM 89 CE LYS C 114 10.166 55.324 23.808 1.00117.76 ATOM 90 NZ LYS C 114 10.922 56.508 23.329 1.00116.81 ATOM 91 N ALA C 115 7.409 55.242 29.129 1.00119.30 ATOM 92 CA ALA C 115 6.565 54.533 30.084 1.00118.75 ATOM 93 C ALA C 115 6.191 53.142 29.580 1.00118.39 ATOM 94 O ALA C 115 5.685 52.983 28.465 1.00118.31 ATOM 95 CB ALA C 115 5.307 55.342 30.364 1.00118.84 ATOM 96 N PHE C 116 6.440 52.138 30.417 1.00117.07 ATOM 97 CA PHE C 116 6.148 50.754 30.071 1.00114.95 ATOM 98 C PHE C 116 5.117 50.153 31.015 1.00114.63 ATOM 99 O PHE C 116 5.082 50.484 32.201 1.00114.14 ATOM 100 CB PHE C 116 7.435 49.933 30.111 1.00113.07 ATOM 101 CG PHE C 116 8.447 50.347 29.080 1.00111.10 ATOM 102 CD1 PHE C 116 8.262 50.029 27.738 1.00110.06 ATOM 103 CD2 PHE C 116 9.577 51.070 29.447 1.00109.78 ATOM 104 CE1 PHE C 116 9.190 50.425 26.773 1.00109.16 ATOM 105 CE2 PHE C 116 10.509 51.470 28.490 1.00109.38 ATOM 106 CZ PHE C 116 10.314 51.146 27.150 1.00108.64 ATOM 107 N LYS C 117 4.285 49.266 30.469 1.00114.29 ATOM 108 CA LYS C 117 3.222 48.582 31.210 1.00113.16 ATOM 109 C LYS C 117 3.771 47.525 32.172 1.00112.70 ATOM 110 O LYS C 117 3.372 47.459 33.337 1.00112.36 ATOM 111 CB LYS C 117 2.264 47.925 30.215 1.00112.66 ATOM 112 CG LYS C 117 1.074 47.224 30.836 1.00113.47 ATOM 113 CD LYS C 117 0.162 46.666 29.748 1.00113.78 ATOM 114 CE LYS C 117 -1.093 46.032 30.324 1.00113.72 ATOM 115 NZ LYS C 117 -2.012 45.584 29.242 1.00113.22 ATOM 116 N LYS C 118 4.693 46.708 31.668 1.00112.44 ATOM 117 CA LYS C 118 5.323 45.638 32.438 1.00110.83 ATOM 118 C LYS C 118 6.809 45.929 32.668 1.00109.57 ATOM 119 O LYS C 118 7.512 46.348 31.747 1.00108.50 ATOM 120 CB LYS C 118 5.143 44.312 31.693 1.00111.16 ATOM 121 CG LYS C 118 3.679 43.951 31.478 1.00110.85 ATOM 122 CD LYS C 118 3.513 42.623 30.772 1.00111.71 ATOM 123 CE LYS C 118 2.039 42.276 30.616 1.00112.02 ATOM 124 NZ LYS C 118 1.336 42.229 31.930 1.00112.31 ATOM 125 N HIS C 119 7.286 45.698 33.892 1.00108.50 ATOM 126 CA HIS C 119 8.683 45.973 34.220 1.00107.87 ATOM 127 C HIS C 119 9.706 45.152 33.450 1.00108.32 ATOM 128 O HIS C 119 10.912 45.350 33.606 1.00108.20 ATOM 129 CB HIS C 119 8.943 45.833 35.724 1.00106.33 ATOM 130 CG HIS C 119 8.716 44.457 36.265 1.00105.46 ATOM 131 ND1 HIS C 119 7.459 43.936 36.479 1.00105.03 ATOM 132 CD2 HIS C 119 9.591 43.517 36.693 1.00105.09 ATOM 133 CE1 HIS C 119 7.569 42.738 37.024 1.00104.53 ATOM 134 NE2 HIS C 119 8.851 42.460 37.163 1.00104.49 ATOM 135 N ASN C 120 9.238 44.224 32.627 1.00108.86 ATOM 136 CA ASN C 120 10.162 43.441 31.824 1.00109.17 ATOM 137 C ASN C 120 10.485 44.283 30.600 1.00108.05 ATOM 138 O ASN C 120 11.641 44.406 30.198 1.00108.02 ATOM 139 CB ASN C 120 9.540 42.107 31.404 1.00110.86 ATOM 140 CG ASN C 120 9.693 41.035 32.472 1.00113.10 ATOM 141 OD1 ASN C 120 10.788 40.829 33.013 1.00113.52 ATOM 142 ND2 ASN C 120 8.600 40.337 32.775 1.00114.14 ATOM 143 N GLN C 121 9.447 44.881 30.029 1.00106.62 ATOM 144 CA GLN C 121 9.602 45.726 28.855 1.00104.94 ATOM 145 C GLN C 121 10.618 46.815 29.178 1.00103.71 ATOM 146 O GLN C 121 11.410 47.218 28.324 1.00102.64 ATOM 147 CB GLN C 121 8.257 46.359 28.491 1.00105.17 ATOM 148 CG GLN C 121 7.050 45.503 28.857 1.00104.86 ATOM 149 CD GLN C 121 5.771 45.966 28.185 1.00104.63 ATOM 150 OE1 GLN C 121 5.656 45.943 26.959 1.00104.53 ATOM 151 NE2 GLN C 121 4.800 46.386 28.985 1.00105.10 ATOM 152 N LEU C 122 10.588 47.276 30.425 1.00102.90 ATOM 153 CA LEU C 122 11.490 48.323 30.889 1.00103.18 ATOM 154 C LEU C 122 12.936 47.863 30.817 1.00103.30 ATOM 155 O LEU C 122 13.730 48.396 30.038 1.00103.75 ATOM 156 CB LEU C 122 11.160 48.708 32.332 1.00103.74 ATOM 157 CG LEU C 122 12.011 49.837 32.925 1.00103.82 ATOM 158 CD1 LEU C 122 11.744 51.119 32.146 1.00104.21 ATOM 159 CD2 LEU C 122 11.686 50.027 34.398 1.00102.72 ATOM 160 N LYS C 123 13.267 46.882 31.654 1.00102.98 ATOM 161 CA LYS C 123 14.609 46.301 31.715 1.00101.71 ATOM 162 C LYS C 123 15.132 46.050 30.309 1.00100.58 ATOM 163 O LYS C 123 16.240 46.458 29.960 1.00 99.74 ATOM 164 CB LYS C 123 14.555 44.981 32.483 1.00101.69 ATOM 165 CG LYS C 123 15.836 44.183 32.482 1.00101.25 ATOM 166 CD LYS C 123 15.593 42.875 33.200 1.00101.98 ATOM 167 CE LYS C 123 16.866 42.086 33.403 1.00102.23 ATOM 168 NZ LYS C 123 16.600 40.867 34.216 1.00101.85 ATOM 169 N VAL C 124 14.317 45.373 29.511 1.00 99.48 ATOM 170 CA VAL C 124 14.673 45.064 28.141 1.00 99.45 ATOM 171 C VAL C 124 15.145 46.325 27.423 1.00100.15 ATOM 172 O VAL C 124 16.171 46.318 26.733 1.00 99.85 ATOM 173 CB VAL C 124 13.466 44.478 27.390 1.00 98.66 ATOM 174 CG1 VAL C 124 13.848 44.156 25.955 1.00 98.01 ATOM 175 CG2 VAL C 124 12.978 43.233 28.098 1.00 97.99 ATOM 176 N HIS C 125 14.389 47.404 27.606 1.00100.87 ATOM 177 CA HIS C 125 14.677 48.691 26.985 1.00101.75 ATOM 178 C HIS C 125 16.020 49.315 27.407 1.00102.34 ATOM 179 O HIS C 125 16.501 50.243 26.753 1.00103.31 ATOM 180 CB HIS C 125 13.510 49.655 27.272 1.00102.23 ATOM 181 CG HIS C 125 13.748 51.070 26.831 1.00103.00 ATOM 182 ND1 HIS C 125 14.023 51.411 25.524 1.00102.71 ATOM 183 CD2 HIS C 125 13.741 52.232 27.529 1.00102.81 ATOM 184 CE1 HIS C 125 14.176 52.721 25.436 1.00102.86 ATOM 185 NE2 HIS C 125 14.010 53.243 26.638 1.00102.18 ATOM 186 N GLN C 126 16.638 48.814 28.477 1.00102.05 ATOM 187 CA GLN C 126 17.920 49.371 28.915 1.00101.49 ATOM 188 C GLN C 126 19.079 48.952 28.027 1.00101.98 ATOM 189 O GLN C 126 20.229 49.267 28.315 1.00101.07 ATOM 190 CB GLN C 126 18.234 48.972 30.357 1.00100.66 ATOM 191 CG GLN C 126 17.966 50.066 31.376 1.00 99.74 ATOM 192 CD GLN C 126 16.497 50.401 31.483 1.00 99.92 ATOM 193 OE1 GLN C 126 15.895 50.928 30.547 1.00 99.32 ATOM 194 NE2 GLN C 126 15.904 50.082 32.627 1.00100.36 ATOM 195 N PHE C 127 18.775 48.233 26.952 1.00103.90 ATOM 196 CA PHE C 127 19.802 47.782 26.019 1.00105.79 ATOM 197 C PHE C 127 20.352 49.005 25.293 1.00107.07 ATOM 198 O PHE C 127 21.568 49.205 25.209 1.00106.79 ATOM 199 CB PHE C 127 19.207 46.801 25.003 1.00105.47 ATOM 200 CG PHE C 127 20.227 46.175 24.084 1.00105.86 ATOM 201 CD1 PHE C 127 19.818 45.363 23.026 1.00106.42 ATOM 202 CD2 PHE C 127 21.595 46.381 24.280 1.00105.16 ATOM 203 CE1 PHE C 127 20.754 44.766 22.176 1.00106.31 ATOM 204 CE2 PHE C 127 22.535 45.793 23.442 1.00104.76 ATOM 205 CZ PHE C 127 22.114 44.982 22.386 1.00105.86 ATOM 206 N SER C 128 19.436 49.813 24.763 1.00108.87 ATOM 207 CA SER C 128 19.792 51.035 24.056 1.00110.20 ATOM 208 C SER C 128 20.724 51.840 24.960 1.00110.85 ATOM 209 O SER C 128 21.916 51.966 24.672 1.00111.47 ATOM 210 CB SER C 128 18.524 51.834 23.725 1.00110.44 ATOM 211 OG SER C 128 17.705 52.014 24.870 1.00110.04 ATOM 212 N HIS C 129 20.184 52.376 26.052 1.00110.94 ATOM 213 CA HIS C 129 20.993 53.121 27.006 1.00111.45 ATOM 214 C HIS C 129 22.066 52.109 27.415 1.00112.92 ATOM 215 O HIS C 129 21.846 50.904 27.287 1.00114.36 ATOM 216 CB HIS C 129 20.129 53.534 28.198 1.00110.43 ATOM 217 CG HIS C 129 18.876 54.261 27.807 1.00109.95 ATOM 218 ND1 HIS C 129 18.891 55.493 27.190 1.00109.27 ATOM 219 CD2 HIS C 129 17.571 53.916 27.919 1.00109.78 ATOM 220 CE1 HIS C 129 17.651 55.875 26.939 1.00108.79 ATOM 221 NE2 HIS C 129 16.831 54.935 27.371 1.00108.62 ATOM 222 N THR C 130 23.216 52.575 27.897 1.00113.79 ATOM 223 CA THR C 130 24.318 51.670 28.265 1.00114.27 ATOM 224 C THR C 130 24.574 50.683 27.115 1.00114.40 ATOM 225 O THR C 130 24.733 51.095 25.965 1.00114.52 ATOM 226 CB THR C 130 24.032 50.865 29.579 1.00113.91 ATOM 227 OG1 THR C 130 22.879 50.029 29.409 1.00112.95 ATOM 228 CG2 THR C 130 23.820 51.814 30.754 1.00113.51 ATOM 229 N GLN C 131 24.618 49.389 27.418 1.00114.20 ATOM 230 CA GLN C 131 24.838 48.395 26.379 1.00114.52 ATOM 231 C GLN C 131 24.726 46.959 26.840 1.00114.20 ATOM 232 O GLN C 131 24.250 46.104 26.093 1.00114.06 ATOM 233 CB GLN C 131 26.196 48.596 25.717 1.00115.53 ATOM 234 CG GLN C 131 26.079 49.125 24.298 1.00117.92 ATOM 235 CD GLN C 131 25.022 48.385 23.485 1.00118.41 ATOM 236 OE1 GLN C 131 25.084 47.163 23.326 1.00118.41 ATOM 237 NE2 GLN C 131 24.045 49.127 22.970 1.00117.95 ATOM 238 N GLN C 132 25.175 46.688 28.061 1.00113.87 ATOM 239 CA GLN C 132 25.111 45.337 28.603 1.00113.13 ATOM 240 C GLN C 132 23.784 44.683 28.273 1.00112.00 ATOM 241 O GLN C 132 22.731 45.302 28.432 1.00112.30 ATOM 242 CB GLN C 132 25.262 45.348 30.121 1.00113.73 ATOM 243 CG GLN C 132 26.667 45.543 30.628 1.00116.10 ATOM 244 CD GLN C 132 26.767 45.261 32.116 1.00117.85 ATOM 245 OE1 GLN C 132 26.063 45.874 32.921 1.00118.39 ATOM 246 NE2 GLN C 132 27.640 44.325 32.489 1.00118.05 TER