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 B 104 104 PDB 1UN6 1UN6 104 104 DBREF 1UN6 B 105 190 UNP P03001 TF3A_XENLA 127 212 SEQRES 1 B 30 GLY TYR PRO CYS LYS LYS ASP ASP SER CYS SER PHE VAL SEQRES 2 B 30 GLY LYS THR TRP THR LEU TYR LEU LYS HIS VAL ALA GLU SEQRES 3 B 30 CYS HIS GLN ASP ATOM 1 N GLY B 161 2.704 89.408 16.030 1.00 36.77 ATOM 2 CA GLY B 161 1.876 90.226 16.894 1.00 38.17 ATOM 3 C GLY B 161 1.516 89.561 18.218 1.00 38.21 ATOM 4 O GLY B 161 1.871 88.403 18.476 1.00 36.97 ATOM 5 N TYR B 162 0.801 90.312 19.052 1.00 37.38 ATOM 6 CA TYR B 162 0.397 89.872 20.375 1.00 38.04 ATOM 7 C TYR B 162 -1.040 90.322 20.607 1.00 42.58 ATOM 8 O TYR B 162 -1.297 91.419 21.112 1.00 40.49 ATOM 9 CB TYR B 162 1.322 90.511 21.428 1.00 35.44 ATOM 10 CG TYR B 162 2.796 90.144 21.310 1.00 28.14 ATOM 11 CD1 TYR B 162 3.325 89.078 22.026 1.00 23.51 ATOM 12 CD2 TYR B 162 3.631 90.807 20.404 1.00 28.03 ATOM 13 CE1 TYR B 162 4.636 88.667 21.838 1.00 23.74 ATOM 14 CE2 TYR B 162 4.957 90.403 20.206 1.00 26.23 ATOM 15 CZ TYR B 162 5.443 89.324 20.926 1.00 25.62 ATOM 16 OH TYR B 162 6.715 88.864 20.689 1.00 25.78 ATOM 17 N PRO B 163 -2.005 89.473 20.230 1.00 48.56 ATOM 18 CA PRO B 163 -3.442 89.727 20.366 1.00 50.56 ATOM 19 C PRO B 163 -3.854 89.880 21.809 1.00 52.92 ATOM 20 O PRO B 163 -3.302 89.223 22.684 1.00 53.62 ATOM 21 CB PRO B 163 -4.072 88.489 19.744 1.00 50.16 ATOM 22 CG PRO B 163 -3.068 88.069 18.742 1.00 51.53 ATOM 23 CD PRO B 163 -1.783 88.201 19.527 1.00 50.74 ATOM 24 N CYS B 164 -4.829 90.749 22.047 1.00 56.04 ATOM 25 CA CYS B 164 -5.344 90.980 23.384 1.00 57.75 ATOM 26 C CYS B 164 -6.528 90.054 23.577 1.00 59.11 ATOM 27 O CYS B 164 -7.654 90.397 23.222 1.00 60.22 ATOM 28 CB CYS B 164 -5.797 92.437 23.545 1.00 57.50 ATOM 29 SG CYS B 164 -6.598 92.787 25.145 1.00 59.52 ATOM 30 N LYS B 165 -6.271 88.868 24.116 1.00 61.35 ATOM 31 CA LYS B 165 -7.339 87.900 24.366 1.00 64.15 ATOM 32 C LYS B 165 -7.925 88.246 25.728 1.00 65.31 ATOM 33 O LYS B 165 -8.119 87.371 26.560 1.00 65.31 ATOM 34 CB LYS B 165 -6.788 86.459 24.399 1.00 64.51 ATOM 35 CG LYS B 165 -6.538 85.789 23.026 1.00 64.57 ATOM 36 CD LYS B 165 -5.069 85.813 22.624 1.00 66.44 ATOM 37 CE LYS B 165 -4.188 85.135 23.681 1.00 68.74 ATOM 38 NZ LYS B 165 -2.715 85.214 23.412 1.00 69.13 ATOM 39 N LYS B 166 -8.226 89.524 25.938 1.00 66.93 ATOM 40 CA LYS B 166 -8.722 89.982 27.224 1.00 68.36 ATOM 41 C LYS B 166 -10.217 90.232 27.357 1.00 70.74 ATOM 42 O LYS B 166 -10.724 90.267 28.480 1.00 68.92 ATOM 43 CB LYS B 166 -7.967 91.251 27.626 1.00 67.44 ATOM 44 CG LYS B 166 -7.575 91.324 29.092 1.00 66.15 ATOM 45 CD LYS B 166 -6.427 90.379 29.425 1.00 65.31 ATOM 46 CE LYS B 166 -6.018 90.528 30.882 1.00 65.11 ATOM 47 NZ LYS B 166 -4.856 89.678 31.234 1.00 64.69 ATOM 48 N ASP B 167 -10.927 90.418 26.240 1.00 75.21 ATOM 49 CA ASP B 167 -12.371 90.671 26.330 1.00 78.48 ATOM 50 C ASP B 167 -13.298 90.323 25.166 1.00 79.56 ATOM 51 O ASP B 167 -14.522 90.403 25.320 1.00 79.97 ATOM 52 CB ASP B 167 -12.630 92.131 26.691 1.00 81.17 ATOM 53 CG ASP B 167 -14.096 92.401 26.965 1.00 84.08 ATOM 54 OD1 ASP B 167 -14.596 91.957 28.022 1.00 85.77 ATOM 55 OD2 ASP B 167 -14.756 93.040 26.120 1.00 86.20 ATOM 56 N ASP B 168 -12.751 89.945 24.014 1.00 81.26 ATOM 57 CA ASP B 168 -13.588 89.602 22.852 1.00 82.13 ATOM 58 C ASP B 168 -14.186 90.864 22.228 1.00 81.18 ATOM 59 O ASP B 168 -14.667 90.839 21.092 1.00 82.06 ATOM 60 CB ASP B 168 -14.728 88.644 23.247 1.00 83.69 ATOM 61 CG ASP B 168 -14.248 87.218 23.484 1.00 85.20 ATOM 62 OD1 ASP B 168 -15.026 86.425 24.065 1.00 85.06 ATOM 63 OD2 ASP B 168 -13.105 86.888 23.085 1.00 85.51 ATOM 64 N SER B 169 -14.182 91.958 22.985 1.00 78.38 ATOM 65 CA SER B 169 -14.686 93.222 22.469 1.00 74.44 ATOM 66 C SER B 169 -13.440 93.999 22.048 1.00 72.35 ATOM 67 O SER B 169 -13.514 94.896 21.198 1.00 71.90 ATOM 68 CB SER B 169 -15.459 93.990 23.543 1.00 73.94 ATOM 69 OG SER B 169 -14.611 94.800 24.339 1.00 72.94 ATOM 70 N CYS B 170 -12.299 93.626 22.645 1.00 68.97 ATOM 71 CA CYS B 170 -11.007 94.250 22.347 1.00 65.13 ATOM 72 C CYS B 170 -10.258 93.460 21.290 1.00 63.16 ATOM 73 O CYS B 170 -10.029 92.258 21.448 1.00 63.21 ATOM 74 CB CYS B 170 -10.123 94.345 23.586 1.00 64.50 ATOM 75 SG CYS B 170 -8.618 95.299 23.269 1.00 60.79 ATOM 76 N SER B 171 -9.873 94.156 20.225 1.00 60.21 ATOM 77 CA SER B 171 -9.167 93.557 19.107 1.00 58.09 ATOM 78 C SER B 171 -7.775 94.167 18.970 1.00 57.69 ATOM 79 O SER B 171 -7.287 94.404 17.850 1.00 56.84 ATOM 80 CB SER B 171 -9.960 93.791 17.821 1.00 58.65 ATOM 81 OG SER B 171 -9.814 95.126 17.361 1.00 57.63 ATOM 82 N PHE B 172 -7.144 94.437 20.114 1.00 56.19 ATOM 83 CA PHE B 172 -5.805 95.022 20.128 1.00 52.21 ATOM 84 C PHE B 172 -4.814 93.970 19.644 1.00 50.01 ATOM 85 O PHE B 172 -5.062 92.761 19.759 1.00 50.00 ATOM 86 CB PHE B 172 -5.417 95.485 21.547 1.00 50.67 ATOM 87 CG PHE B 172 -4.013 96.053 21.641 1.00 50.07 ATOM 88 CD1 PHE B 172 -3.674 97.236 20.991 1.00 49.94 ATOM 89 CD2 PHE B 172 -3.010 95.372 22.327 1.00 49.83 ATOM 90 CE1 PHE B 172 -2.356 97.727 21.020 1.00 47.61 ATOM 91 CE2 PHE B 172 -1.691 95.856 22.357 1.00 46.78 ATOM 92 CZ PHE B 172 -1.370 97.030 21.702 1.00 45.86 ATOM 93 N VAL B 173 -3.706 94.437 19.083 1.00 45.48 ATOM 94 CA VAL B 173 -2.671 93.549 18.611 1.00 42.97 ATOM 95 C VAL B 173 -1.348 94.261 18.759 1.00 42.10 ATOM 96 O VAL B 173 -0.959 95.047 17.905 1.00 44.38 ATOM 97 CB VAL B 173 -2.888 93.152 17.139 1.00 41.58 ATOM 98 CG1 VAL B 173 -1.631 92.527 16.575 1.00 39.67 ATOM 99 CG2 VAL B 173 -4.026 92.170 17.042 1.00 39.75 ATOM 100 N GLY B 174 -0.646 93.986 19.844 1.00 40.05 ATOM 101 CA GLY B 174 0.625 94.648 20.040 1.00 41.16 ATOM 102 C GLY B 174 1.759 94.219 19.127 1.00 41.44 ATOM 103 O GLY B 174 1.899 93.048 18.800 1.00 39.42 ATOM 104 N LYS B 175 2.570 95.188 18.716 1.00 43.10 ATOM 105 CA LYS B 175 3.720 94.927 17.864 1.00 45.08 ATOM 106 C LYS B 175 4.766 94.175 18.661 1.00 45.44 ATOM 107 O LYS B 175 5.493 93.339 18.123 1.00 46.40 ATOM 108 CB LYS B 175 4.366 96.226 17.409 1.00 47.94 ATOM 109 CG LYS B 175 3.854 96.827 16.116 1.00 54.81 ATOM 110 CD LYS B 175 5.029 97.092 15.149 1.00 61.31 ATOM 111 CE LYS B 175 6.246 97.756 15.851 1.00 63.59 ATOM 112 NZ LYS B 175 7.470 97.841 14.988 1.00 62.48 ATOM 113 N THR B 176 4.823 94.486 19.955 1.00 44.94 ATOM 114 CA THR B 176 5.802 93.924 20.871 1.00 42.84 ATOM 115 C THR B 176 5.215 93.425 22.196 1.00 40.26 ATOM 116 O THR B 176 4.121 93.839 22.580 1.00 37.92 ATOM 117 CB THR B 176 6.810 94.998 21.124 1.00 45.16 ATOM 118 OG1 THR B 176 6.647 95.466 22.456 1.00 52.38 ATOM 119 CG2 THR B 176 6.687 96.124 20.107 1.00 51.38 ATOM 120 N TRP B 177 5.929 92.547 22.903 1.00 37.77 ATOM 121 CA TRP B 177 5.416 92.030 24.183 1.00 37.06 ATOM 122 C TRP B 177 5.232 93.140 25.230 1.00 36.11 ATOM 123 O TRP B 177 4.216 93.185 25.944 1.00 32.17 ATOM 124 CB TRP B 177 6.335 90.944 24.752 1.00 37.63 ATOM 125 CG TRP B 177 5.963 90.511 26.182 1.00 39.47 ATOM 126 CD1 TRP B 177 6.714 90.688 27.315 1.00 35.89 ATOM 127 CD2 TRP B 177 4.761 89.832 26.610 1.00 37.61 ATOM 128 NE1 TRP B 177 6.062 90.162 28.403 1.00 33.12 ATOM 129 CE2 TRP B 177 4.868 89.631 28.006 1.00 33.92 ATOM 130 CE3 TRP B 177 3.614 89.373 25.949 1.00 37.93 ATOM 131 CZ2 TRP B 177 3.879 88.998 28.751 1.00 34.14 ATOM 132 CZ3 TRP B 177 2.618 88.734 26.703 1.00 38.48 ATOM 133 CH2 TRP B 177 2.764 88.555 28.085 1.00 37.19 ATOM 134 N THR B 178 6.217 94.026 25.330 1.00 33.85 ATOM 135 CA THR B 178 6.096 95.131 26.264 1.00 35.10 ATOM 136 C THR B 178 4.844 95.927 25.904 1.00 35.58 ATOM 137 O THR B 178 3.982 96.193 26.758 1.00 34.16 ATOM 138 CB THR B 178 7.295 96.094 26.184 1.00 35.06 ATOM 139 OG1 THR B 178 8.480 95.440 26.663 1.00 34.83 ATOM 140 CG2 THR B 178 7.021 97.346 27.015 1.00 31.23 ATOM 141 N LEU B 179 4.764 96.293 24.624 1.00 34.81 ATOM 142 CA LEU B 179 3.653 97.066 24.090 1.00 33.48 ATOM 143 C LEU B 179 2.325 96.440 24.399 1.00 35.46 ATOM 144 O LEU B 179 1.365 97.141 24.696 1.00 36.40 ATOM 145 CB LEU B 179 3.808 97.252 22.589 1.00 29.78 ATOM 146 CG LEU B 179 4.877 98.291 22.233 1.00 27.43 ATOM 147 CD1 LEU B 179 5.147 98.306 20.757 1.00 21.99 ATOM 148 CD2 LEU B 179 4.422 99.639 22.710 1.00 25.43 ATOM 149 N TYR B 180 2.247 95.120 24.331 1.00 38.36 ATOM 150 CA TYR B 180 0.985 94.480 24.663 1.00 40.47 ATOM 151 C TYR B 180 0.725 94.690 26.162 1.00 42.23 ATOM 152 O TYR B 180 -0.404 95.020 26.545 1.00 44.12 ATOM 153 CB TYR B 180 1.015 92.987 24.322 1.00 40.36 ATOM 154 CG TYR B 180 0.107 92.146 25.196 1.00 41.29 ATOM 155 CD1 TYR B 180 -1.254 92.028 24.939 1.00 39.16 ATOM 156 CD2 TYR B 180 0.617 91.514 26.330 1.00 44.61 ATOM 157 CE1 TYR B 180 -2.084 91.299 25.796 1.00 40.03 ATOM 158 CE2 TYR B 180 -0.198 90.790 27.191 1.00 44.15 ATOM 159 CZ TYR B 180 -1.541 90.684 26.926 1.00 42.78 ATOM 160 OH TYR B 180 -2.308 89.966 27.818 1.00 44.04 ATOM 161 N LEU B 181 1.754 94.516 27.003 1.00 41.20 ATOM 162 CA LEU B 181 1.570 94.706 28.442 1.00 41.64 ATOM 163 C LEU B 181 1.168 96.130 28.772 1.00 43.21 ATOM 164 O LEU B 181 0.221 96.332 29.543 1.00 42.18 ATOM 165 CB LEU B 181 2.830 94.362 29.239 1.00 41.01 ATOM 166 CG LEU B 181 3.184 92.885 29.450 1.00 42.10 ATOM 167 CD1 LEU B 181 4.435 92.800 30.291 1.00 40.02 ATOM 168 CD2 LEU B 181 2.049 92.135 30.116 1.00 40.52 ATOM 169 N LYS B 182 1.881 97.110 28.199 1.00 44.31 ATOM 170 CA LYS B 182 1.578 98.528 28.439 1.00 45.69 ATOM 171 C LYS B 182 0.106 98.766 28.163 1.00 45.23 ATOM 172 O LYS B 182 -0.578 99.450 28.923 1.00 45.11 ATOM 173 CB LYS B 182 2.423 99.448 27.544 1.00 48.29 ATOM 174 CG LYS B 182 2.130 100.947 27.754 1.00 53.19 ATOM 175 CD LYS B 182 3.227 101.882 27.204 1.00 56.64 ATOM 176 CE LYS B 182 3.058 102.186 25.704 1.00 58.35 ATOM 177 NZ LYS B 182 4.205 102.959 25.100 1.00 55.35 ATOM 178 N HIS B 183 -0.367 98.183 27.066 1.00 45.06 ATOM 179 CA HIS B 183 -1.755 98.274 26.656 1.00 44.01 ATOM 180 C HIS B 183 -2.702 97.757 27.736 1.00 44.01 ATOM 181 O HIS B 183 -3.731 98.351 27.997 1.00 42.90 ATOM 182 CB HIS B 183 -1.953 97.463 25.388 1.00 44.34 ATOM 183 CG HIS B 183 -3.381 97.095 25.120 1.00 45.93 ATOM 184 ND1 HIS B 183 -4.273 97.953 24.516 1.00 45.04 ATOM 185 CD2 HIS B 183 -4.071 95.958 25.382 1.00 45.55 ATOM 186 CE1 HIS B 183 -5.450 97.360 24.417 1.00 46.32 ATOM 187 NE2 HIS B 183 -5.354 96.149 24.933 1.00 44.83 ATOM 188 N VAL B 184 -2.372 96.635 28.355 1.00 45.94 ATOM 189 CA VAL B 184 -3.246 96.098 29.382 1.00 49.23 ATOM 190 C VAL B 184 -3.319 97.085 30.510 1.00 52.25 ATOM 191 O VAL B 184 -4.398 97.481 30.951 1.00 52.46 ATOM 192 CB VAL B 184 -2.716 94.788 29.952 1.00 49.02 ATOM 193 CG1 VAL B 184 -3.646 94.305 31.050 1.00 46.26 ATOM 194 CG2 VAL B 184 -2.592 93.748 28.842 1.00 49.60 ATOM 195 N ALA B 185 -2.140 97.478 30.970 1.00 56.01 ATOM 196 CA ALA B 185 -1.992 98.424 32.067 1.00 59.03 ATOM 197 C ALA B 185 -2.779 99.695 31.842 1.00 60.53 ATOM 198 O ALA B 185 -3.322 100.277 32.776 1.00 61.68 ATOM 199 CB ALA B 185 -0.521 98.766 32.251 1.00 60.32 ATOM 200 N GLU B 186 -2.837 100.119 30.593 1.00 62.59 ATOM 201 CA GLU B 186 -3.528 101.332 30.230 1.00 65.16 ATOM 202 C GLU B 186 -4.982 101.152 29.773 1.00 66.72 ATOM 203 O GLU B 186 -5.707 102.129 29.638 1.00 68.32 ATOM 204 CB GLU B 186 -2.711 102.011 29.145 1.00 67.28 ATOM 205 CG GLU B 186 -3.216 103.343 28.692 1.00 72.54 ATOM 206 CD GLU B 186 -2.287 103.954 27.675 1.00 75.92 ATOM 207 OE1 GLU B 186 -2.581 105.074 27.197 1.00 78.15 ATOM 208 OE2 GLU B 186 -1.260 103.305 27.361 1.00 76.81 ATOM 209 N CYS B 187 -5.427 99.916 29.564 1.00 68.07 ATOM 210 CA CYS B 187 -6.789 99.698 29.085 1.00 68.45 ATOM 211 C CYS B 187 -7.642 98.692 29.844 1.00 70.19 ATOM 212 O CYS B 187 -8.833 98.581 29.560 1.00 70.31 ATOM 213 CB CYS B 187 -6.763 99.282 27.604 1.00 68.63 ATOM 214 SG CYS B 187 -6.043 100.492 26.448 1.00 66.65 ATOM 215 N HIS B 188 -7.059 97.948 30.783 1.00 71.99 ATOM 216 CA HIS B 188 -7.830 96.948 31.534 1.00 73.66 ATOM 217 C HIS B 188 -7.357 96.836 32.968 1.00 76.88 ATOM 218 O HIS B 188 -6.644 95.903 33.314 1.00 78.60 ATOM 219 CB HIS B 188 -7.723 95.557 30.886 1.00 70.68 ATOM 220 CG HIS B 188 -8.013 95.540 29.416 1.00 69.51 ATOM 221 ND1 HIS B 188 -9.207 95.976 28.883 1.00 67.11 ATOM 222 CD2 HIS B 188 -7.260 95.133 28.365 1.00 68.45 ATOM 223 CE1 HIS B 188 -9.177 95.839 27.570 1.00 67.21 ATOM 224 NE2 HIS B 188 -8.007 95.330 27.231 1.00 67.37 ATOM 225 N GLN B 189 -7.756 97.783 33.808 1.00 81.38 ATOM 226 CA GLN B 189 -7.358 97.768 35.213 1.00 84.77 ATOM 227 C GLN B 189 -8.522 98.169 36.130 1.00 85.86 ATOM 228 O GLN B 189 -9.432 98.886 35.656 1.00 86.67 ATOM 229 CB GLN B 189 -6.158 98.708 35.432 1.00 85.33 ATOM 230 CG GLN B 189 -5.702 99.474 34.182 1.00 89.32 ATOM 231 CD GLN B 189 -6.585 100.688 33.816 1.00 92.10 ATOM 232 OE1 GLN B 189 -7.809 100.571 33.654 1.00 92.02 ATOM 233 NE2 GLN B 189 -5.952 101.860 33.673 1.00 91.86 ATOM 234 N ASP B 190 -8.509 97.772 37.318 1.00 87.27 TER