HEADER TRANSCRIPTION/DNA 03-JAN-96 1LBG TITLE LACTOSE OPERON REPRESSOR BOUND TO 21-BASE PAIR SYMMETRIC OPERATOR TITLE 2 DNA, ALPHA CARBONS ONLY COMPND MOL_ID: 2; COMPND 2 MOLECULE: PROTEIN (LACTOSE OPERON REPRESSOR); COMPND 3 CHAIN: A, B, C, D; COMPND 4 ENGINEERED: YES; EXPDTA X-RAY DIFFRACTION REMARK 2 RESOLUTION. 4.80 ANGSTORMS DBREF 1LBG C 1 360 UNP P03023 LACI_ECOLI 1 360 SEQRES 1 C 167 SER LEU LEU ILE GLY VAL ALA THR SER SER LEU ALA LEU SEQRES 2 C 167 HIS ALA PRO SER GLN ILE VAL ALA ALA ILE LYS SER ARG SEQRES 3 C 167 ALA ASP GLN LEU GLY ALA SER VAL VAL VAL SER MET VAL SEQRES 4 C 167 GLU ARG SER GLY VAL GLU ALA CYS LYS THR ALA VAL HIS SEQRES 5 C 167 ASN LEU LEU ALA GLN ARG VAL SER GLY LEU ILE ILE ASN SEQRES 6 C 167 TYR PRO LEU ASP ASP GLN ASP ALA ILE ALA VAL GLU ALA SEQRES 7 C 167 ALA CYS THR ASN VAL PRO ALA LEU PHE LEU ASP VAL SER SEQRES 8 C 167 ASP GLN THR PRO ILE ASN SER ILE ILE GLN ASP PHE ARG SEQRES 9 C 167 LEU LEU GLY GLN THR SER VAL ASP ARG LEU LEU GLN LEU SEQRES 10 C 167 SER GLN GLY GLN ALA VAL LYS GLY ASN GLN LEU LEU PRO SEQRES 11 C 167 VAL SER LEU VAL LYS ARG LYS THR THR LEU ALA PRO ASN SEQRES 12 C 167 THR GLN THR ALA SER PRO ARG ALA LEU ALA ASP SER LEU SEQRES 13 C 167 MET GLN LEU ALA ARG GLN VAL SER ARG LEU GLU ATOM 1 CA SER C 61 35.485 27.701 38.342 1.00 15.00 ATOM 2 CA LEU C 62 38.964 26.401 37.610 1.00 15.00 ATOM 3 CA LEU C 63 39.704 29.187 35.169 1.00 15.00 ATOM 4 CA ILE C 64 43.349 29.236 36.173 1.00 15.00 ATOM 5 CA GLY C 65 44.081 32.712 34.950 1.00 15.00 ATOM 6 CA VAL C 66 47.799 32.686 34.637 1.00 15.00 ATOM 7 CA ALA C 67 50.361 35.229 33.711 1.00 15.00 ATOM 8 CA THR C 68 54.031 34.619 33.840 1.00 15.00 ATOM 9 CA SER C 69 57.078 36.049 32.219 1.00 15.00 ATOM 10 CA SER C 70 57.046 34.694 28.688 1.00 15.00 ATOM 11 CA LEU C 71 60.169 33.005 27.238 1.00 15.00 ATOM 12 CA ALA C 72 59.059 29.548 28.271 1.00 15.00 ATOM 13 CA LEU C 73 62.746 28.886 28.892 1.00 15.00 ATOM 14 CA HIS C 74 62.822 26.208 31.523 1.00 15.00 ATOM 15 CA ALA C 75 62.149 28.345 34.443 1.00 15.00 ATOM 16 CA PRO C 76 58.725 29.565 33.468 1.00 15.00 ATOM 17 CA SER C 77 57.913 26.762 31.135 1.00 15.00 ATOM 18 CA GLN C 78 58.481 23.847 33.420 1.00 15.00 ATOM 19 CA ILE C 79 56.334 25.678 35.867 1.00 15.00 ATOM 20 CA VAL C 80 53.601 26.720 33.529 1.00 15.00 ATOM 21 CA ALA C 81 53.492 23.158 32.322 1.00 15.00 ATOM 22 CA ALA C 82 53.319 21.937 35.858 1.00 15.00 ATOM 23 CA ILE C 83 50.229 23.900 36.695 1.00 15.00 ATOM 24 CA LYS C 84 48.584 23.263 33.407 1.00 15.00 ATOM 25 CA SER C 85 49.259 19.530 33.811 1.00 15.00 ATOM 26 CA ARG C 86 47.890 19.424 37.293 1.00 15.00 ATOM 27 CA ALA C 87 45.077 21.745 36.546 1.00 15.00 ATOM 28 CA ASP C 88 43.925 19.398 33.844 1.00 15.00 ATOM 29 CA GLN C 89 42.645 16.528 35.996 1.00 15.00 ATOM 30 CA LEU C 90 41.069 18.715 38.645 1.00 15.00 ATOM 31 CA GLY C 91 39.143 20.262 35.808 1.00 15.00 ATOM 32 CA ALA C 92 41.186 23.376 35.672 1.00 15.00 ATOM 33 CA SER C 93 41.706 25.469 32.531 1.00 15.00 ATOM 34 CA VAL C 94 44.789 27.548 31.859 1.00 15.00 ATOM 35 CA VAL C 95 44.658 31.059 30.522 1.00 15.00 ATOM 36 CA VAL C 96 48.169 32.083 29.858 1.00 15.00 ATOM 37 CA SER C 97 49.159 35.657 29.369 1.00 15.00 ATOM 38 CA MET C 98 52.866 35.716 28.767 1.00 15.00 ATOM 39 CA VAL C 99 53.809 39.210 29.951 1.00 15.00 ATOM 40 CA GLU C 100 55.905 41.472 27.689 1.00 15.00 ATOM 41 CA ARG C 101 58.954 42.373 29.750 1.00 15.00 ATOM 42 CA SER C 102 59.572 44.634 32.763 1.00 15.00 ATOM 43 CA GLY C 103 56.124 46.095 32.212 1.00 15.00 ATOM 44 CA VAL C 104 55.069 46.307 35.815 1.00 15.00 ATOM 45 CA GLU C 105 51.960 47.915 34.417 1.00 15.00 ATOM 46 CA ALA C 106 51.745 45.348 31.642 1.00 15.00 ATOM 47 CA CYS C 107 51.307 42.346 33.908 1.00 15.00 ATOM 48 CA LYS C 108 48.669 44.167 35.891 1.00 15.00 ATOM 49 CA THR C 109 46.977 44.944 32.668 1.00 15.00 ATOM 50 CA ALA C 110 47.487 41.434 31.412 1.00 15.00 ATOM 51 CA VAL C 111 45.676 40.374 34.557 1.00 15.00 ATOM 52 CA HIS C 112 42.756 42.444 33.451 1.00 15.00 ATOM 53 CA ASN C 113 42.295 40.173 30.502 1.00 15.00 ATOM 54 CA LEU C 114 42.100 37.345 33.005 1.00 15.00 ATOM 55 CA LEU C 115 39.700 39.168 35.239 1.00 15.00 ATOM 56 CA ALA C 116 37.635 39.934 32.197 1.00 15.00 ATOM 57 CA GLN C 117 37.345 36.227 31.902 1.00 15.00 ATOM 58 CA ARG C 118 36.037 35.998 35.466 1.00 15.00 ATOM 59 CA VAL C 119 39.091 33.839 36.274 1.00 15.00 ATOM 60 CA SER C 120 37.936 31.490 38.960 1.00 15.00 ATOM 61 CA GLY C 121 41.454 31.889 40.273 1.00 15.00 ATOM 62 CA LEU C 122 44.594 33.440 38.944 1.00 15.00 ATOM 63 CA ILE C 123 48.301 33.071 39.244 1.00 15.00 ATOM 64 CA ILE C 124 51.153 35.436 38.573 1.00 15.00 ATOM 65 CA ASN C 125 54.508 34.187 37.658 1.00 15.00 ATOM 66 CA TYR C 126 56.068 37.407 36.777 1.00 15.00 ATOM 67 CA PRO C 127 59.115 37.157 39.099 1.00 15.00 ATOM 68 CA LEU C 128 59.497 38.905 42.361 1.00 15.00 ATOM 69 CA ASP C 129 58.508 42.551 41.927 1.00 15.00 ATOM 70 CA ASP C 130 57.507 43.733 45.413 1.00 15.00 ATOM 71 CA GLN C 131 54.858 46.192 46.594 1.00 15.00 ATOM 72 CA ASP C 132 54.289 46.607 42.881 1.00 15.00 ATOM 73 CA ALA C 133 52.565 43.250 43.074 1.00 15.00 ATOM 74 CA ILE C 134 50.870 44.630 46.134 1.00 15.00 ATOM 75 CA ALA C 135 49.224 47.097 43.914 1.00 15.00 ATOM 76 CA VAL C 136 49.031 44.337 41.362 1.00 15.00 ATOM 77 CA GLU C 137 47.431 42.256 43.953 1.00 15.00 ATOM 78 CA ALA C 138 45.088 45.109 44.700 1.00 15.00 ATOM 79 CA ALA C 139 43.296 45.308 41.346 1.00 15.00 ATOM 80 CA CYS C 140 42.658 41.654 41.699 1.00 15.00 ATOM 81 CA THR C 141 40.216 42.344 44.497 1.00 15.00 ATOM 82 CA ASN C 142 39.100 38.950 43.301 1.00 15.00 ATOM 83 CA VAL C 143 40.513 35.409 43.946 1.00 15.00 ATOM 84 CA PRO C 144 44.073 36.672 44.624 1.00 15.00 ATOM 85 CA ALA C 145 46.555 34.946 42.360 1.00 15.00 ATOM 86 CA LEU C 146 49.753 33.666 43.590 1.00 15.00 ATOM 87 CA PHE C 147 52.537 35.809 42.341 1.00 15.00 ATOM 88 CA LEU C 148 54.334 32.643 43.384 1.00 15.00 ATOM 89 CA ASP C 149 57.837 34.077 43.358 1.00 15.00 ATOM 90 CA VAL C 150 58.106 37.433 45.011 1.00 15.00 ATOM 91 CA SER C 151 59.837 39.112 47.929 1.00 15.00 ATOM 92 CA ASP C 152 60.494 36.506 50.681 1.00 15.00 ATOM 93 CA GLN C 153 58.182 38.484 52.692 1.00 15.00 ATOM 94 CA THR C 154 56.390 41.361 51.319 1.00 15.00 ATOM 95 CA PRO C 155 53.183 41.126 53.483 1.00 15.00 ATOM 96 CA ILE C 156 51.169 39.073 51.097 1.00 15.00 ATOM 97 CA ASN C 157 49.667 35.726 50.161 1.00 15.00 ATOM 98 CA SER C 158 51.006 33.833 47.145 1.00 15.00 ATOM 99 CA ILE C 159 54.390 33.660 48.851 1.00 15.00 ATOM 100 CA ILE C 160 54.988 30.137 47.890 1.00 15.00 ATOM 101 CA GLN C 291 63.723 24.234 43.267 1.00 15.00 ATOM 102 CA ASP C 292 60.847 21.832 42.468 1.00 15.00 ATOM 103 CA PHE C 293 58.881 23.832 39.957 1.00 15.00 ATOM 104 CA ARG C 294 56.506 20.926 39.499 1.00 15.00 ATOM 105 CA LEU C 295 55.643 21.329 43.080 1.00 15.00 ATOM 106 CA LEU C 296 55.806 25.095 42.946 1.00 15.00 ATOM 107 CA GLY C 297 53.190 25.066 40.302 1.00 15.00 ATOM 108 CA GLN C 298 51.045 22.142 41.337 1.00 15.00 ATOM 109 CA THR C 299 51.082 23.339 44.914 1.00 15.00 ATOM 110 CA SER C 300 49.845 26.758 44.049 1.00 15.00 ATOM 111 CA VAL C 301 47.088 25.235 41.973 1.00 15.00 ATOM 112 CA ASP C 302 45.657 23.454 44.944 1.00 15.00 ATOM 113 CA ARG C 303 46.552 26.333 47.195 1.00 15.00 ATOM 114 CA LEU C 304 44.741 28.516 44.794 1.00 15.00 ATOM 115 CA LEU C 305 41.836 26.171 45.091 1.00 15.00 ATOM 116 CA GLN C 306 42.699 26.675 48.703 1.00 15.00 ATOM 117 CA LEU C 307 40.769 29.865 49.199 1.00 15.00 ATOM 118 CA SER C 308 38.526 29.867 46.276 1.00 15.00 ATOM 119 CA GLN C 309 36.898 26.628 47.323 1.00 15.00 ATOM 120 CA GLY C 310 39.382 26.060 50.066 1.00 15.00 ATOM 121 CA GLN C 311 38.474 28.988 52.336 1.00 15.00 ATOM 122 CA ALA C 312 40.975 28.153 55.138 1.00 15.00 ATOM 123 CA VAL C 313 43.548 30.860 54.411 1.00 15.00 ATOM 124 CA LYS C 314 47.250 31.366 53.738 1.00 15.00 ATOM 125 CA GLY C 315 49.817 33.940 52.707 1.00 15.00 ATOM 126 CA ASN C 316 53.489 33.115 52.868 1.00 15.00 ATOM 127 CA GLN C 317 54.749 29.600 52.172 1.00 15.00 ATOM 128 CA LEU C 318 58.261 28.339 51.919 1.00 15.00 ATOM 129 CA LEU C 319 59.448 24.953 50.682 1.00 15.00 ATOM 130 CA PRO C 320 62.619 22.807 50.292 1.00 15.00 ATOM 131 CA VAL C 321 65.628 23.345 48.177 1.00 15.00 ATOM 132 CA SER C 322 68.021 20.373 48.414 1.00 15.00 ATOM 133 CA LEU C 323 71.597 20.360 47.134 1.00 15.00 ATOM 134 CA VAL C 324 73.320 17.956 44.700 1.00 15.00 ATOM 135 CA LYS C 325 76.874 16.598 44.686 1.00 15.00 ATOM 136 CA ARG C 326 78.771 16.383 41.421 1.00 15.00 ATOM 137 CA LYS C 327 81.920 17.331 39.535 1.00 15.00 ATOM 138 CA THR C 328 81.966 21.096 39.909 1.00 15.00 ATOM 139 CA THR C 329 82.817 21.304 43.500 1.00 15.00 ATOM 140 CA LEU C 330 85.906 19.869 45.031 1.00 15.00 ATOM 141 CA ALA C 331 88.662 22.077 43.765 1.00 15.00 ATOM 142 CA PRO C 332 90.393 20.675 46.905 1.00 15.00 ATOM 143 CA ASN C 333 92.953 23.313 46.128 1.00 15.00 ATOM 144 CA THR C 334 94.578 24.536 43.011 1.00 15.00 ATOM 145 CA GLN C 335 97.316 22.075 44.153 1.00 15.00 ATOM 146 CA THR C 336 95.893 18.672 45.231 1.00 15.00 ATOM 147 CA ALA C 337 93.825 15.729 43.778 1.00 15.00 ATOM 148 CA SER C 338 92.880 12.043 44.719 1.00 15.00 ATOM 149 CA PRO C 339 89.173 11.148 44.437 1.00 15.00 ATOM 150 CA ARG C 340 87.478 8.959 41.873 1.00 15.00 ATOM 151 CA ALA C 341 88.954 11.328 39.338 1.00 15.00 ATOM 152 CA LEU C 342 91.964 9.203 38.467 1.00 15.00 ATOM 153 CA ALA C 343 90.728 5.689 38.028 1.00 15.00 ATOM 154 CA ASP C 344 88.088 6.927 35.613 1.00 15.00 ATOM 155 CA SER C 345 91.056 8.226 33.751 1.00 15.00 ATOM 156 CA LEU C 346 91.780 4.575 32.944 1.00 15.00 ATOM 157 CA MET C 347 88.208 3.437 33.103 1.00 15.00 ATOM 158 CA GLN C 348 87.997 5.031 29.706 1.00 15.00 ATOM 159 CA LEU C 349 91.566 4.200 28.829 1.00 15.00 ATOM 160 CA ALA C 350 90.019 0.784 29.351 1.00 15.00 ATOM 161 CA ARG C 351 88.012 1.337 26.129 1.00 15.00 ATOM 162 CA GLN C 352 91.141 2.937 24.642 1.00 15.00 ATOM 163 CA VAL C 353 92.759 -0.280 25.847 1.00 15.00 ATOM 164 CA SER C 354 89.901 -2.272 24.292 1.00 15.00 ATOM 165 CA ARG C 355 90.516 -0.066 21.297 1.00 15.00 ATOM 166 CA LEU C 356 93.839 -1.835 20.739 1.00 15.00 ATOM 167 CA GLU C 357 92.166 -4.896 19.203 1.00 15.00 TER