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 28 LEU PRO TYR GLU CYS PRO HIS GLU GLY CYS ASP LYS ARG SEQRES 2 C 28 PHE SER LEU PRO SER ARG LEU LYS ARG HIS GLU LYS VAL SEQRES 3 C 28 HIS ALA ATOM 1 N LEU C 133 23.832 43.442 27.796 1.00109.99 ATOM 2 CA LEU C 133 22.602 42.718 27.507 1.00107.50 ATOM 3 C LEU C 133 22.005 42.455 28.890 1.00106.77 ATOM 4 O LEU C 133 22.627 41.792 29.727 1.00106.82 ATOM 5 CB LEU C 133 22.906 41.409 26.779 1.00105.21 ATOM 6 CG LEU C 133 23.181 41.560 25.285 1.00102.40 ATOM 7 CD1 LEU C 133 23.568 40.226 24.691 1.00101.68 ATOM 8 CD2 LEU C 133 21.937 42.097 24.605 1.00101.34 ATOM 9 N PRO C 134 20.797 42.989 29.152 1.00105.50 ATOM 10 CA PRO C 134 20.102 42.835 30.438 1.00103.56 ATOM 11 C PRO C 134 20.023 41.436 31.054 1.00101.89 ATOM 12 O PRO C 134 20.470 41.228 32.187 1.00101.09 ATOM 13 CB PRO C 134 18.721 43.443 30.163 1.00103.53 ATOM 14 CG PRO C 134 18.557 43.291 28.675 1.00104.19 ATOM 15 CD PRO C 134 19.920 43.643 28.162 1.00104.72 ATOM 16 N TYR C 135 19.468 40.481 30.313 1.00 99.96 ATOM 17 CA TYR C 135 19.312 39.121 30.819 1.00 97.83 ATOM 18 C TYR C 135 20.591 38.289 30.888 1.00 96.16 ATOM 19 O TYR C 135 21.257 38.031 29.888 1.00 96.04 ATOM 20 CB TYR C 135 18.217 38.410 30.020 1.00 98.10 ATOM 21 CG TYR C 135 16.863 39.028 30.284 1.00 98.08 ATOM 22 CD1 TYR C 135 16.254 38.893 31.528 1.00 97.59 ATOM 23 CD2 TYR C 135 16.233 39.825 29.326 1.00 98.76 ATOM 24 CE1 TYR C 135 15.064 39.538 31.817 1.00 98.78 ATOM 25 CE2 TYR C 135 15.038 40.479 29.605 1.00 98.34 ATOM 26 CZ TYR C 135 14.460 40.332 30.855 1.00 99.27 ATOM 27 OH TYR C 135 13.287 40.984 31.162 1.00 99.92 ATOM 28 N GLU C 136 20.899 37.866 32.109 1.00 94.32 ATOM 29 CA GLU C 136 22.086 37.091 32.450 1.00 92.11 ATOM 30 C GLU C 136 21.726 35.628 32.753 1.00 89.55 ATOM 31 O GLU C 136 20.569 35.309 32.998 1.00 88.83 ATOM 32 CB GLU C 136 22.706 37.755 33.672 1.00 93.97 ATOM 33 CG GLU C 136 24.065 37.295 34.086 1.00 97.94 ATOM 34 CD GLU C 136 24.499 37.991 35.359 1.00100.23 ATOM 35 OE1 GLU C 136 23.847 37.760 36.405 1.00101.85 ATOM 36 OE2 GLU C 136 25.474 38.775 35.310 1.00101.37 ATOM 37 N CYS C 137 22.710 34.736 32.741 1.00 87.65 ATOM 38 CA CYS C 137 22.435 33.329 33.026 1.00 85.95 ATOM 39 C CYS C 137 22.825 32.886 34.443 1.00 86.08 ATOM 40 O CYS C 137 23.950 33.114 34.906 1.00 85.02 ATOM 41 CB CYS C 137 23.135 32.435 32.013 1.00 85.61 ATOM 42 SG CYS C 137 22.831 30.693 32.295 1.00 82.64 ATOM 43 N PRO C 138 21.888 32.226 35.142 1.00 86.14 ATOM 44 CA PRO C 138 22.034 31.715 36.511 1.00 86.15 ATOM 45 C PRO C 138 22.878 30.455 36.682 1.00 86.62 ATOM 46 O PRO C 138 23.435 30.223 37.752 1.00 86.78 ATOM 47 CB PRO C 138 20.592 31.487 36.936 1.00 85.36 ATOM 48 CG PRO C 138 19.968 31.016 35.664 1.00 85.74 ATOM 49 CD PRO C 138 20.524 31.979 34.638 1.00 85.55 ATOM 50 N HIS C 139 22.962 29.632 35.645 1.00 87.58 ATOM 51 CA HIS C 139 23.743 28.416 35.753 1.00 88.80 ATOM 52 C HIS C 139 25.163 28.786 36.147 1.00 90.57 ATOM 53 O HIS C 139 25.677 29.834 35.751 1.00 90.02 ATOM 54 CB HIS C 139 23.761 27.648 34.433 1.00 88.62 ATOM 55 CG HIS C 139 24.341 26.270 34.553 1.00 89.54 ATOM 56 ND1 HIS C 139 23.646 25.217 35.109 1.00 89.90 ATOM 57 CD2 HIS C 139 25.565 25.785 34.235 1.00 89.53 ATOM 58 CE1 HIS C 139 24.416 24.143 35.126 1.00 89.25 ATOM 59 NE2 HIS C 139 25.586 24.461 34.603 1.00 88.90 ATOM 60 N GLU C 140 25.787 27.917 36.934 1.00 92.84 ATOM 61 CA GLU C 140 27.152 28.123 37.403 1.00 95.29 ATOM 62 C GLU C 140 28.174 28.265 36.265 1.00 95.53 ATOM 63 O GLU C 140 28.169 27.492 35.299 1.00 95.34 ATOM 64 CB GLU C 140 27.542 26.961 38.326 1.00 97.74 ATOM 65 CG GLU C 140 29.029 26.856 38.677 1.00102.24 ATOM 66 CD GLU C 140 29.531 27.990 39.559 1.00104.34 ATOM 67 OE1 GLU C 140 29.461 29.163 39.123 1.00105.65 ATOM 68 OE2 GLU C 140 30.000 27.702 40.684 1.00105.02 ATOM 69 N GLY C 141 29.042 29.268 36.391 1.00 95.21 ATOM 70 CA GLY C 141 30.078 29.504 35.400 1.00 94.54 ATOM 71 C GLY C 141 29.623 29.568 33.955 1.00 94.52 ATOM 72 O GLY C 141 30.134 28.836 33.109 1.00 94.63 ATOM 73 N CYS C 142 28.662 30.440 33.672 1.00 94.44 ATOM 74 CA CYS C 142 28.147 30.618 32.317 1.00 93.69 ATOM 75 C CYS C 142 27.922 32.106 32.082 1.00 95.18 ATOM 76 O CYS C 142 26.798 32.591 32.172 1.00 96.17 ATOM 77 CB CYS C 142 26.829 29.869 32.135 1.00 91.20 ATOM 78 SG CYS C 142 26.125 30.090 30.499 1.00 84.64 ATOM 79 N ASP C 143 29.000 32.821 31.775 1.00 96.16 ATOM 80 CA ASP C 143 28.954 34.266 31.556 1.00 97.03 ATOM 81 C ASP C 143 28.098 34.724 30.375 1.00 96.88 ATOM 82 O ASP C 143 28.314 35.813 29.845 1.00 97.93 ATOM 83 CB ASP C 143 30.380 34.792 31.368 1.00 97.55 ATOM 84 CG ASP C 143 31.331 34.279 32.429 1.00 99.21 ATOM 85 OD1 ASP C 143 31.184 34.669 33.608 1.00100.80 ATOM 86 OD2 ASP C 143 32.223 33.474 32.088 1.00 99.56 ATOM 87 N LYS C 144 27.123 33.919 29.969 1.00 95.99 ATOM 88 CA LYS C 144 26.294 34.285 28.829 1.00 95.27 ATOM 89 C LYS C 144 25.145 35.229 29.172 1.00 96.00 ATOM 90 O LYS C 144 24.511 35.099 30.220 1.00 96.02 ATOM 91 CB LYS C 144 25.757 33.025 28.156 1.00 93.90 ATOM 92 CG LYS C 144 25.309 33.252 26.733 1.00 92.73 ATOM 93 CD LYS C 144 25.127 31.942 26.001 1.00 93.15 ATOM 94 CE LYS C 144 26.441 31.185 25.871 1.00 92.67 ATOM 95 NZ LYS C 144 26.243 29.861 25.212 1.00 92.15 ATOM 96 N ARG C 145 24.896 36.179 28.270 1.00 96.50 ATOM 97 CA ARG C 145 23.842 37.184 28.419 1.00 96.74 ATOM 98 C ARG C 145 22.925 37.214 27.200 1.00 96.92 ATOM 99 O ARG C 145 23.306 36.773 26.121 1.00 97.10 ATOM 100 CB ARG C 145 24.460 38.568 28.604 1.00 96.64 ATOM 101 CG ARG C 145 25.167 38.772 29.923 1.00 97.24 ATOM 102 CD ARG C 145 25.780 40.153 29.977 1.00 99.18 ATOM 103 NE ARG C 145 26.053 40.581 31.344 1.00101.45 ATOM 104 CZ ARG C 145 25.114 40.813 32.255 1.00102.29 ATOM 105 NH1 ARG C 145 23.833 40.660 31.945 1.00102.84 ATOM 106 NH2 ARG C 145 25.455 41.197 33.478 1.00102.37 ATOM 107 N PHE C 146 21.716 37.742 27.369 1.00 97.64 ATOM 108 CA PHE C 146 20.760 37.807 26.264 1.00 97.58 ATOM 109 C PHE C 146 19.948 39.095 26.199 1.00 97.00 ATOM 110 O PHE C 146 19.957 39.913 27.124 1.00 95.77 ATOM 111 CB PHE C 146 19.809 36.609 26.319 1.00 98.12 ATOM 112 CG PHE C 146 20.513 35.294 26.355 1.00 98.09 ATOM 113 CD1 PHE C 146 21.168 34.876 27.510 1.00 98.33 ATOM 114 CD2 PHE C 146 20.573 34.497 25.220 1.00 97.80 ATOM 115 CE1 PHE C 146 21.878 33.684 27.529 1.00 99.29 ATOM 116 CE2 PHE C 146 21.280 33.303 25.227 1.00 97.92 ATOM 117 CZ PHE C 146 21.935 32.894 26.382 1.00 98.36 ATOM 118 N SER C 147 19.232 39.249 25.091 1.00 96.83 ATOM 119 CA SER C 147 18.420 40.429 24.835 1.00 96.96 ATOM 120 C SER C 147 17.078 40.441 25.558 1.00 96.58 ATOM 121 O SER C 147 16.808 41.332 26.358 1.00 96.70 ATOM 122 CB SER C 147 18.198 40.558 23.334 1.00 96.94 ATOM 123 OG SER C 147 19.422 40.365 22.649 1.00 97.27 ATOM 124 N LEU C 148 16.233 39.461 25.271 1.00 96.27 ATOM 125 CA LEU C 148 14.923 39.389 25.908 1.00 96.10 ATOM 126 C LEU C 148 14.866 38.241 26.906 1.00 95.57 ATOM 127 O LEU C 148 15.804 37.456 27.022 1.00 95.76 ATOM 128 CB LEU C 148 13.831 39.178 24.862 1.00 96.15 ATOM 129 CG LEU C 148 13.760 40.116 23.665 1.00 95.55 ATOM 130 CD1 LEU C 148 14.920 39.842 22.716 1.00 95.27 ATOM 131 CD2 LEU C 148 12.429 39.893 22.960 1.00 96.26 ATOM 132 N PRO C 149 13.759 38.134 27.648 1.00 94.81 ATOM 133 CA PRO C 149 13.660 37.045 28.614 1.00 94.23 ATOM 134 C PRO C 149 13.261 35.734 27.941 1.00 93.34 ATOM 135 O PRO C 149 13.637 34.658 28.400 1.00 93.47 ATOM 136 CB PRO C 149 12.602 37.555 29.591 1.00 94.60 ATOM 137 CG PRO C 149 11.687 38.315 28.707 1.00 94.65 ATOM 138 CD PRO C 149 12.654 39.092 27.831 1.00 95.18 ATOM 139 N SER C 150 12.506 35.826 26.851 1.00 92.52 ATOM 140 CA SER C 150 12.065 34.627 26.144 1.00 92.23 ATOM 141 C SER C 150 13.284 33.914 25.586 1.00 92.18 ATOM 142 O SER C 150 13.398 32.690 25.653 1.00 92.15 ATOM 143 CB SER C 150 11.144 34.994 24.989 1.00 91.04 ATOM 144 OG SER C 150 11.906 35.528 23.924 1.00 90.43 ATOM 145 N ARG C 151 14.187 34.709 25.028 1.00 92.07 ATOM 146 CA ARG C 151 15.420 34.212 24.443 1.00 91.65 ATOM 147 C ARG C 151 16.297 33.494 25.472 1.00 89.85 ATOM 148 O ARG C 151 17.101 32.640 25.109 1.00 90.25 ATOM 149 CB ARG C 151 16.180 35.379 23.821 1.00 94.10 ATOM 150 CG ARG C 151 17.545 35.025 23.296 1.00 99.05 ATOM 151 CD ARG C 151 18.205 36.244 22.665 1.00103.51 ATOM 152 NE ARG C 151 17.410 36.786 21.565 1.00106.38 ATOM 153 CZ ARG C 151 17.792 37.798 20.793 1.00107.49 ATOM 154 NH1 ARG C 151 18.965 38.387 20.996 1.00108.07 ATOM 155 NH2 ARG C 151 17.002 38.218 19.813 1.00108.28 ATOM 156 N LEU C 152 16.141 33.845 26.748 1.00 87.39 ATOM 157 CA LEU C 152 16.904 33.216 27.829 1.00 85.02 ATOM 158 C LEU C 152 16.266 31.887 28.247 1.00 84.36 ATOM 159 O LEU C 152 16.933 30.861 28.336 1.00 83.83 ATOM 160 CB LEU C 152 16.978 34.147 29.042 1.00 83.61 ATOM 161 CG LEU C 152 17.434 33.483 30.345 1.00 82.37 ATOM 162 CD1 LEU C 152 18.782 32.815 30.146 1.00 83.30 ATOM 163 CD2 LEU C 152 17.517 34.506 31.442 1.00 80.36 ATOM 164 N LYS C 153 14.967 31.924 28.512 1.00 83.91 ATOM 165 CA LYS C 153 14.214 30.740 28.903 1.00 83.44 ATOM 166 C LYS C 153 14.608 29.567 28.014 1.00 83.23 ATOM 167 O LYS C 153 14.793 28.448 28.485 1.00 82.59 ATOM 168 CB LYS C 153 12.720 31.015 28.734 1.00 83.42 ATOM 169 CG LYS C 153 11.870 30.826 29.976 1.00 84.70 ATOM 170 CD LYS C 153 11.700 29.363 30.340 1.00 86.93 ATOM 171 CE LYS C 153 10.586 29.179 31.380 1.00 88.86 ATOM 172 NZ LYS C 153 9.227 29.529 30.849 1.00 88.43 ATOM 173 N ARG C 154 14.730 29.849 26.721 1.00 83.57 ATOM 174 CA ARG C 154 15.069 28.850 25.719 1.00 84.17 ATOM 175 C ARG C 154 16.501 28.368 25.826 1.00 83.48 ATOM 176 O ARG C 154 16.804 27.220 25.507 1.00 83.55 ATOM 177 CB ARG C 154 14.834 29.414 24.319 1.00 86.05 ATOM 178 CG ARG C 154 15.175 28.448 23.201 1.00 88.73 ATOM 179 CD ARG C 154 14.918 29.066 21.836 1.00 90.91 ATOM 180 NE ARG C 154 15.787 30.208 21.558 1.00 92.94 ATOM 181 CZ ARG C 154 15.693 30.963 20.466 1.00 94.86 ATOM 182 NH1 ARG C 154 14.766 30.695 19.553 1.00 96.28 ATOM 183 NH2 ARG C 154 16.525 31.983 20.278 1.00 95.76 ATOM 184 N HIS C 155 17.387 29.249 26.261 1.00 82.70 ATOM 185 CA HIS C 155 18.787 28.884 26.407 1.00 82.78 ATOM 186 C HIS C 155 18.981 27.898 27.557 1.00 82.94 ATOM 187 O HIS C 155 19.741 26.941 27.452 1.00 82.81 ATOM 188 CB HIS C 155 19.623 30.136 26.663 1.00 83.35 ATOM 189 CG HIS C 155 20.949 29.855 27.297 1.00 85.21 ATOM 190 ND1 HIS C 155 21.958 29.179 26.646 1.00 86.27 ATOM 191 CD2 HIS C 155 21.424 30.143 28.533 1.00 86.06 ATOM 192 CE1 HIS C 155 22.998 29.064 27.454 1.00 86.91 ATOM 193 NE2 HIS C 155 22.699 29.640 28.605 1.00 85.70 ATOM 194 N GLU C 156 18.281 28.139 28.657 1.00 83.45 ATOM 195 CA GLU C 156 18.396 27.297 29.832 1.00 82.89 ATOM 196 C GLU C 156 18.074 25.845 29.544 1.00 81.61 ATOM 197 O GLU C 156 18.429 24.963 30.322 1.00 82.46 ATOM 198 CB GLU C 156 17.495 27.838 30.938 1.00 85.28 ATOM 199 CG GLU C 156 17.854 29.267 31.342 1.00 89.70 ATOM 200 CD GLU C 156 17.152 29.726 32.613 1.00 91.88 ATOM 201 OE1 GLU C 156 17.275 29.024 33.643 1.00 93.70 ATOM 202 OE2 GLU C 156 16.489 30.789 32.584 1.00 92.38 ATOM 203 N LYS C 157 17.403 25.593 28.428 1.00 79.94 ATOM 204 CA LYS C 157 17.064 24.225 28.046 1.00 78.63 ATOM 205 C LYS C 157 18.359 23.438 27.821 1.00 77.39 ATOM 206 O LYS C 157 18.358 22.207 27.746 1.00 75.59 ATOM 207 CB LYS C 157 16.212 24.232 26.775 1.00 78.52 ATOM 208 CG LYS C 157 14.722 24.373 27.022 1.00 78.27 ATOM 209 CD LYS C 157 14.029 25.034 25.841 1.00 79.63 ATOM 210 CE LYS C 157 14.262 24.294 24.541 1.00 80.65 ATOM 211 NZ LYS C 157 13.799 25.119 23.392 1.00 82.07 ATOM 212 N VAL C 158 19.459 24.173 27.712 1.00 76.08 ATOM 213 CA VAL C 158 20.771 23.583 27.526 1.00 76.56 ATOM 214 C VAL C 158 21.132 22.857 28.813 1.00 76.36 ATOM 215 O VAL C 158 21.048 21.632 28.897 1.00 77.51 ATOM 216 CB VAL C 158 21.835 24.674 27.247 1.00 77.15 ATOM 217 CG1 VAL C 158 23.232 24.135 27.496 1.00 77.63 ATOM 218 CG2 VAL C 158 21.723 25.146 25.815 1.00 78.62 ATOM 219 N HIS C 159 21.522 23.634 29.817 1.00 74.95 ATOM 220 CA HIS C 159 21.903 23.115 31.122 1.00 72.35 ATOM 221 C HIS C 159 20.840 22.165 31.651 1.00 70.87 ATOM 222 O HIS C 159 21.063 21.464 32.633 1.00 70.67 ATOM 223 CB HIS C 159 22.060 24.272 32.100 1.00 72.03 ATOM 224 CG HIS C 159 22.852 25.420 31.558 1.00 71.52 ATOM 225 ND1 HIS C 159 24.228 25.414 31.497 1.00 71.91 ATOM 226 CD2 HIS C 159 22.458 26.612 31.053 1.00 72.07 ATOM 227 CE1 HIS C 159 24.649 26.554 30.980 1.00 71.22 ATOM 228 NE2 HIS C 159 23.595 27.298 30.701 1.00 71.83 ATOM 229 N ALA C 160 19.693 22.146 30.984 1.00 69.67 ATOM 230 CA ALA C 160 18.564 21.317 31.376 1.00 69.89 ATOM 231 C ALA C 160 18.702 19.795 31.243 1.00 70.21 ATOM 232 O ALA C 160 18.479 19.083 32.216 1.00 70.55 ATOM 233 CB ALA C 160 17.316 21.784 30.637 1.00 70.94 TER