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 A 1 360 UNP P03023 LACI_ECOLI 1 360 SEQRES 1 A 167 SER LEU LEU ILE GLY VAL ALA THR SER SER LEU ALA LEU SEQRES 2 A 167 HIS ALA PRO SER GLN ILE VAL ALA ALA ILE LYS SER ARG SEQRES 3 A 167 ALA ASP GLN LEU GLY ALA SER VAL VAL VAL SER MET VAL SEQRES 4 A 167 GLU ARG SER GLY VAL GLU ALA CYS LYS THR ALA VAL HIS SEQRES 5 A 167 ASN LEU LEU ALA GLN ARG VAL SER GLY LEU ILE ILE ASN SEQRES 6 A 167 TYR PRO LEU ASP ASP GLN ASP ALA ILE ALA VAL GLU ALA SEQRES 7 A 167 ALA CYS THR ASN VAL PRO ALA LEU PHE LEU ASP VAL SER SEQRES 8 A 167 ASP GLN THR PRO ILE ASN SER ILE ILE GLN ASP PHE ARG SEQRES 9 A 167 LEU LEU GLY GLN THR SER VAL ASP ARG LEU LEU GLN LEU SEQRES 10 A 167 SER GLN GLY GLN ALA VAL LYS GLY ASN GLN LEU LEU PRO SEQRES 11 A 167 VAL SER LEU VAL LYS ARG LYS THR THR LEU ALA PRO ASN SEQRES 12 A 167 THR GLN THR ALA SER PRO ARG ALA LEU ALA ASP SER LEU SEQRES 13 A 167 MET GLN LEU ALA ARG GLN VAL SER ARG LEU GLU ATOM 1 CA SER A 61 36.364 -26.780 12.861 1.00 15.00 ATOM 2 CA LEU A 62 39.488 -25.251 14.364 1.00 15.00 ATOM 3 CA LEU A 63 39.494 -27.644 17.289 1.00 15.00 ATOM 4 CA ILE A 64 43.269 -27.689 17.366 1.00 15.00 ATOM 5 CA GLY A 65 43.619 -30.924 19.237 1.00 15.00 ATOM 6 CA VAL A 66 47.138 -30.658 20.588 1.00 15.00 ATOM 7 CA ALA A 67 49.317 -32.944 22.556 1.00 15.00 ATOM 8 CA THR A 68 52.872 -32.216 23.376 1.00 15.00 ATOM 9 CA SER A 69 55.345 -33.264 25.987 1.00 15.00 ATOM 10 CA SER A 70 54.267 -31.434 29.085 1.00 15.00 ATOM 11 CA LEU A 71 56.853 -29.477 31.099 1.00 15.00 ATOM 12 CA ALA A 72 56.085 -26.231 29.353 1.00 15.00 ATOM 13 CA LEU A 73 59.805 -25.504 29.715 1.00 15.00 ATOM 14 CA HIS A 74 60.605 -23.195 26.856 1.00 15.00 ATOM 15 CA ALA A 75 60.822 -25.777 24.190 1.00 15.00 ATOM 16 CA PRO A 76 57.285 -26.945 24.316 1.00 15.00 ATOM 17 CA SER A 77 55.819 -23.888 25.911 1.00 15.00 ATOM 18 CA GLN A 78 57.010 -21.309 23.472 1.00 15.00 ATOM 19 CA ILE A 79 55.675 -23.550 20.790 1.00 15.00 ATOM 20 CA VAL A 80 52.383 -24.336 22.461 1.00 15.00 ATOM 21 CA ALA A 81 51.942 -20.659 23.060 1.00 15.00 ATOM 22 CA ALA A 82 52.773 -19.992 19.422 1.00 15.00 ATOM 23 CA ILE A 83 50.078 -22.129 18.014 1.00 15.00 ATOM 24 CA LYS A 84 47.525 -21.144 20.617 1.00 15.00 ATOM 25 CA SER A 85 48.273 -17.462 19.888 1.00 15.00 ATOM 26 CA ARG A 86 47.965 -17.852 16.141 1.00 15.00 ATOM 27 CA ALA A 87 45.038 -20.214 16.434 1.00 15.00 ATOM 28 CA ASP A 88 43.184 -17.569 18.304 1.00 15.00 ATOM 29 CA GLN A 89 42.571 -15.062 15.529 1.00 15.00 ATOM 30 CA LEU A 90 41.802 -17.617 12.835 1.00 15.00 ATOM 31 CA GLY A 91 39.131 -18.845 15.255 1.00 15.00 ATOM 32 CA ALA A 92 41.099 -21.860 16.403 1.00 15.00 ATOM 33 CA SER A 93 40.689 -23.500 19.772 1.00 15.00 ATOM 34 CA VAL A 94 43.444 -25.319 21.626 1.00 15.00 ATOM 35 CA VAL A 95 42.940 -28.612 23.357 1.00 15.00 ATOM 36 CA VAL A 96 46.160 -29.424 25.117 1.00 15.00 ATOM 37 CA SER A 97 46.960 -32.841 26.368 1.00 15.00 ATOM 38 CA MET A 98 50.313 -32.633 27.993 1.00 15.00 ATOM 39 CA VAL A 99 51.540 -36.229 27.627 1.00 15.00 ATOM 40 CA GLU A 100 52.928 -38.094 30.697 1.00 15.00 ATOM 41 CA ARG A 101 56.456 -39.099 29.763 1.00 15.00 ATOM 42 CA SER A 102 57.874 -41.750 27.418 1.00 15.00 ATOM 43 CA GLY A 103 54.403 -43.270 27.137 1.00 15.00 ATOM 44 CA VAL A 104 54.465 -43.982 23.445 1.00 15.00 ATOM 45 CA GLU A 105 51.061 -45.542 24.134 1.00 15.00 ATOM 46 CA ALA A 106 50.045 -42.622 26.342 1.00 15.00 ATOM 47 CA CYS A 107 50.300 -39.973 23.640 1.00 15.00 ATOM 48 CA LYS A 108 48.327 -42.170 21.283 1.00 15.00 ATOM 49 CA THR A 109 45.787 -42.531 23.991 1.00 15.00 ATOM 50 CA ALA A 110 45.954 -38.853 24.770 1.00 15.00 ATOM 51 CA VAL A 111 45.096 -38.349 21.144 1.00 15.00 ATOM 52 CA HIS A 112 41.958 -40.374 21.683 1.00 15.00 ATOM 53 CA ASN A 113 40.634 -37.725 23.996 1.00 15.00 ATOM 54 CA LEU A 114 41.183 -35.276 21.187 1.00 15.00 ATOM 55 CA LEU A 115 39.547 -37.473 18.595 1.00 15.00 ATOM 56 CA ALA A 116 36.680 -37.890 21.047 1.00 15.00 ATOM 57 CA GLN A 117 36.310 -34.198 20.729 1.00 15.00 ATOM 58 CA ARG A 118 36.118 -34.561 16.938 1.00 15.00 ATOM 59 CA VAL A 119 39.244 -32.427 16.712 1.00 15.00 ATOM 60 CA SER A 120 38.916 -30.472 13.521 1.00 15.00 ATOM 61 CA GLY A 121 42.657 -30.886 13.331 1.00 15.00 ATOM 62 CA LEU A 122 45.308 -32.139 15.680 1.00 15.00 ATOM 63 CA ILE A 123 48.929 -31.663 16.391 1.00 15.00 ATOM 64 CA ILE A 124 51.472 -33.769 18.145 1.00 15.00 ATOM 65 CA ASN A 125 54.456 -32.277 19.814 1.00 15.00 ATOM 66 CA TYR A 126 55.666 -35.272 21.578 1.00 15.00 ATOM 67 CA PRO A 127 59.230 -35.219 20.192 1.00 15.00 ATOM 68 CA LEU A 128 60.549 -37.413 17.437 1.00 15.00 ATOM 69 CA ASP A 129 59.481 -41.003 18.107 1.00 15.00 ATOM 70 CA ASP A 130 59.526 -42.677 14.687 1.00 15.00 ATOM 71 CA GLN A 131 57.308 -45.390 13.142 1.00 15.00 ATOM 72 CA ASP A 132 55.702 -45.300 16.556 1.00 15.00 ATOM 73 CA ALA A 133 54.147 -42.048 15.415 1.00 15.00 ATOM 74 CA ILE A 134 53.408 -43.929 12.244 1.00 15.00 ATOM 75 CA ALA A 135 51.134 -46.128 14.225 1.00 15.00 ATOM 76 CA VAL A 136 50.215 -43.071 16.234 1.00 15.00 ATOM 77 CA GLU A 137 49.417 -41.424 12.984 1.00 15.00 ATOM 78 CA ALA A 138 47.420 -44.443 12.012 1.00 15.00 ATOM 79 CA ALA A 139 44.796 -44.257 14.770 1.00 15.00 ATOM 80 CA CYS A 140 44.264 -40.680 13.684 1.00 15.00 ATOM 81 CA THR A 141 42.720 -41.858 10.412 1.00 15.00 ATOM 82 CA ASN A 142 41.289 -38.381 10.774 1.00 15.00 ATOM 83 CA VAL A 143 42.819 -34.915 10.097 1.00 15.00 ATOM 84 CA PRO A 144 46.420 -36.112 10.639 1.00 15.00 ATOM 85 CA ALA A 145 48.135 -33.995 13.228 1.00 15.00 ATOM 86 CA LEU A 146 51.540 -32.730 12.784 1.00 15.00 ATOM 87 CA PHE A 147 53.891 -34.596 15.074 1.00 15.00 ATOM 88 CA LEU A 148 55.906 -31.538 14.133 1.00 15.00 ATOM 89 CA ASP A 149 59.240 -32.787 15.329 1.00 15.00 ATOM 90 CA VAL A 150 59.954 -36.333 14.291 1.00 15.00 ATOM 91 CA SER A 151 62.480 -38.330 12.259 1.00 15.00 ATOM 92 CA ASP A 152 63.874 -36.071 9.498 1.00 15.00 ATOM 93 CA GLN A 153 62.273 -38.431 7.208 1.00 15.00 ATOM 94 CA THR A 154 60.113 -41.168 8.408 1.00 15.00 ATOM 95 CA PRO A 155 57.686 -41.350 5.409 1.00 15.00 ATOM 96 CA ILE A 156 55.075 -39.079 6.793 1.00 15.00 ATOM 97 CA ASN A 157 53.382 -35.697 6.805 1.00 15.00 ATOM 98 CA SER A 158 53.772 -33.392 9.766 1.00 15.00 ATOM 99 CA ILE A 159 57.484 -33.316 9.071 1.00 15.00 ATOM 100 CA ILE A 160 57.841 -29.651 9.627 1.00 15.00 ATOM 101 CA GLN A 291 64.845 -22.818 15.728 1.00 15.00 ATOM 102 CA ASP A 292 61.884 -20.412 15.339 1.00 15.00 ATOM 103 CA PHE A 293 59.243 -22.149 17.426 1.00 15.00 ATOM 104 CA ARG A 294 56.835 -19.338 16.779 1.00 15.00 ATOM 105 CA LEU A 295 57.070 -20.246 13.162 1.00 15.00 ATOM 106 CA LEU A 296 57.170 -23.957 13.881 1.00 15.00 ATOM 107 CA GLY A 297 53.893 -23.662 15.655 1.00 15.00 ATOM 108 CA GLN A 298 52.173 -21.011 13.648 1.00 15.00 ATOM 109 CA THR A 299 53.199 -22.662 10.451 1.00 15.00 ATOM 110 CA SER A 300 51.782 -25.974 11.401 1.00 15.00 ATOM 111 CA VAL A 301 48.537 -24.307 12.347 1.00 15.00 ATOM 112 CA ASP A 302 48.027 -23.038 8.884 1.00 15.00 ATOM 113 CA ARG A 303 49.487 -26.137 7.377 1.00 15.00 ATOM 114 CA LEU A 304 47.085 -28.073 9.477 1.00 15.00 ATOM 115 CA LEU A 305 44.410 -25.914 8.037 1.00 15.00 ATOM 116 CA GLN A 306 46.279 -26.863 4.912 1.00 15.00 ATOM 117 CA LEU A 307 44.575 -30.186 4.361 1.00 15.00 ATOM 118 CA SER A 308 41.563 -29.851 6.494 1.00 15.00 ATOM 119 CA GLN A 309 40.307 -26.869 4.594 1.00 15.00 ATOM 120 CA GLY A 310 43.481 -26.596 2.630 1.00 15.00 ATOM 121 CA GLN A 311 43.284 -29.827 0.661 1.00 15.00 ATOM 122 CA ALA A 312 46.475 -29.235 -1.424 1.00 15.00 ATOM 123 CA VAL A 313 48.744 -31.719 0.334 1.00 15.00 ATOM 124 CA LYS A 314 52.080 -31.979 2.079 1.00 15.00 ATOM 125 CA GLY A 315 54.243 -34.267 4.162 1.00 15.00 ATOM 126 CA ASN A 316 57.786 -33.321 4.927 1.00 15.00 ATOM 127 CA GLN A 317 58.778 -29.695 5.465 1.00 15.00 ATOM 128 CA LEU A 318 62.112 -28.287 6.551 1.00 15.00 ATOM 129 CA LEU A 319 62.880 -24.751 7.584 1.00 15.00 ATOM 130 CA PRO A 320 65.813 -22.424 8.487 1.00 15.00 ATOM 131 CA VAL A 321 68.141 -22.571 11.436 1.00 15.00 ATOM 132 CA SER A 322 70.477 -19.566 11.494 1.00 15.00 ATOM 133 CA LEU A 323 73.496 -19.202 13.722 1.00 15.00 ATOM 134 CA VAL A 324 74.439 -16.412 16.121 1.00 15.00 ATOM 135 CA LYS A 325 77.859 -14.948 16.984 1.00 15.00 ATOM 136 CA ARG A 326 78.713 -14.151 20.601 1.00 15.00 ATOM 137 CA LYS A 327 81.173 -14.727 23.426 1.00 15.00 ATOM 138 CA THR A 328 81.394 -18.511 23.609 1.00 15.00 ATOM 139 CA THR A 329 83.264 -19.206 20.456 1.00 15.00 ATOM 140 CA LEU A 330 86.573 -17.383 20.927 1.00 15.00 ATOM 141 CA ALA A 331 90.289 -18.178 20.986 1.00 15.00 ATOM 142 CA PRO A 332 92.150 -21.420 20.542 1.00 15.00 ATOM 143 CA ASN A 333 94.072 -21.367 23.852 1.00 15.00 ATOM 144 CA THR A 334 95.915 -18.035 24.183 1.00 15.00 ATOM 145 CA GLN A 335 94.188 -15.229 26.117 1.00 15.00 ATOM 146 CA THR A 336 97.064 -12.823 25.336 1.00 15.00 ATOM 147 CA ALA A 337 98.554 -13.390 21.802 1.00 15.00 ATOM 148 CA SER A 338 97.701 -9.815 20.527 1.00 15.00 ATOM 149 CA PRO A 339 93.916 -10.136 20.132 1.00 15.00 ATOM 150 CA ARG A 340 91.206 -8.709 22.388 1.00 15.00 ATOM 151 CA ALA A 341 92.907 -10.722 25.121 1.00 15.00 ATOM 152 CA LEU A 342 94.977 -7.862 26.595 1.00 15.00 ATOM 153 CA ALA A 343 92.613 -4.949 26.839 1.00 15.00 ATOM 154 CA ASP A 344 90.085 -7.043 28.700 1.00 15.00 ATOM 155 CA SER A 345 92.989 -7.523 31.039 1.00 15.00 ATOM 156 CA LEU A 346 92.410 -3.915 32.037 1.00 15.00 ATOM 157 CA MET A 347 88.728 -3.913 31.240 1.00 15.00 ATOM 158 CA GLN A 348 88.415 -5.725 34.543 1.00 15.00 ATOM 159 CA LEU A 349 91.357 -3.918 36.091 1.00 15.00 ATOM 160 CA ALA A 350 88.959 -1.106 35.331 1.00 15.00 ATOM 161 CA ARG A 351 86.747 -2.460 38.091 1.00 15.00 ATOM 162 CA GLN A 352 89.920 -3.143 40.076 1.00 15.00 ATOM 163 CA VAL A 353 90.592 0.452 39.294 1.00 15.00 ATOM 164 CA SER A 354 87.085 1.445 40.320 1.00 15.00 ATOM 165 CA ARG A 355 87.798 -0.706 43.344 1.00 15.00 ATOM 166 CA LEU A 356 90.268 1.942 44.507 1.00 15.00 ATOM 167 CA GLU A 357 87.516 4.196 45.756 1.00 15.00 TER