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 131 PHE SER HIS GLU ASP GLY THR ARG LEU GLY VAL GLU HIS SEQRES 2 A 131 LEU VAL ALA LEU GLY HIS GLN GLN ILE ALA LEU LEU ALA SEQRES 3 A 131 GLY PRO LEU SER SER VAL SER ALA ARG LEU ARG LEU ALA SEQRES 4 A 131 GLY TRP HIS LYS TYR LEU THR ARG ASN GLN ILE GLN PRO SEQRES 5 A 131 ILE ALA GLU ARG GLU GLY ASP TRP SER ALA MET SER GLY SEQRES 6 A 131 PHE GLN GLN THR MET GLN MET LEU ASN GLU GLY ILE VAL SEQRES 7 A 131 PRO THR ALA MET LEU VAL ALA ASN ASP GLN MET ALA LEU SEQRES 8 A 131 GLY ALA MET ARG ALA ILE THR GLU SER GLY LEU ARG VAL SEQRES 9 A 131 GLY ALA ASP ILE SER VAL VAL GLY TYR ASP ASP THR GLU SEQRES 10 A 131 ASP SER SER CYS TYR ILE PRO PRO LEU THR THR ILE LYS SEQRES 11 A 131 GLN ATOM 1 CA PHE A 161 60.814 -28.129 11.329 1.00 15.00 ATOM 2 CA SER A 162 64.446 -27.358 10.930 1.00 15.00 ATOM 3 CA HIS A 163 68.070 -28.366 11.668 1.00 15.00 ATOM 4 CA GLU A 164 70.717 -30.429 9.765 1.00 15.00 ATOM 5 CA ASP A 165 72.827 -27.540 8.775 1.00 15.00 ATOM 6 CA GLY A 166 73.116 -25.880 12.196 1.00 15.00 ATOM 7 CA THR A 167 73.830 -29.409 13.230 1.00 15.00 ATOM 8 CA ARG A 168 77.332 -28.554 12.072 1.00 15.00 ATOM 9 CA LEU A 169 77.300 -24.800 11.785 1.00 15.00 ATOM 10 CA GLY A 170 78.732 -25.018 15.231 1.00 15.00 ATOM 11 CA VAL A 171 81.042 -27.850 14.394 1.00 15.00 ATOM 12 CA GLU A 172 82.287 -26.505 11.108 1.00 15.00 ATOM 13 CA HIS A 173 82.582 -22.834 11.994 1.00 15.00 ATOM 14 CA LEU A 174 84.274 -23.934 15.196 1.00 15.00 ATOM 15 CA VAL A 175 86.876 -26.023 13.466 1.00 15.00 ATOM 16 CA ALA A 176 87.073 -23.088 11.112 1.00 15.00 ATOM 17 CA LEU A 177 87.785 -21.076 14.229 1.00 15.00 ATOM 18 CA GLY A 178 90.573 -23.547 14.984 1.00 15.00 ATOM 19 CA HIS A 179 89.101 -24.718 18.220 1.00 15.00 ATOM 20 CA GLN A 180 89.124 -28.409 17.444 1.00 15.00 ATOM 21 CA GLN A 181 89.662 -31.313 19.906 1.00 15.00 ATOM 22 CA ILE A 182 86.090 -31.210 21.056 1.00 15.00 ATOM 23 CA ALA A 183 83.963 -33.048 23.459 1.00 15.00 ATOM 24 CA LEU A 184 80.535 -32.239 22.076 1.00 15.00 ATOM 25 CA LEU A 185 77.479 -32.376 24.314 1.00 15.00 ATOM 26 CA ALA A 186 74.078 -33.661 23.492 1.00 15.00 ATOM 27 CA GLY A 187 70.877 -34.104 25.366 1.00 15.00 ATOM 28 CA PRO A 188 69.240 -37.484 25.962 1.00 15.00 ATOM 29 CA LEU A 189 68.788 -40.147 23.394 1.00 15.00 ATOM 30 CA SER A 190 65.075 -41.006 23.444 1.00 15.00 ATOM 31 CA SER A 191 64.200 -37.808 21.686 1.00 15.00 ATOM 32 CA VAL A 192 65.678 -38.636 18.342 1.00 15.00 ATOM 33 CA SER A 193 65.995 -34.865 18.135 1.00 15.00 ATOM 34 CA ALA A 194 68.783 -35.331 20.626 1.00 15.00 ATOM 35 CA ARG A 195 70.193 -38.430 18.961 1.00 15.00 ATOM 36 CA LEU A 196 69.716 -36.876 15.621 1.00 15.00 ATOM 37 CA ARG A 197 71.333 -33.665 16.819 1.00 15.00 ATOM 38 CA LEU A 198 74.246 -35.717 17.937 1.00 15.00 ATOM 39 CA ALA A 199 74.705 -37.713 14.738 1.00 15.00 ATOM 40 CA GLY A 200 74.839 -34.413 12.930 1.00 15.00 ATOM 41 CA TRP A 201 77.896 -33.341 14.863 1.00 15.00 ATOM 42 CA HIS A 202 79.526 -36.672 13.970 1.00 15.00 ATOM 43 CA LYS A 203 78.529 -36.466 10.327 1.00 15.00 ATOM 44 CA TYR A 204 80.241 -33.116 10.021 1.00 15.00 ATOM 45 CA LEU A 205 82.892 -33.574 12.716 1.00 15.00 ATOM 46 CA THR A 206 84.044 -36.709 10.974 1.00 15.00 ATOM 47 CA ARG A 207 83.220 -34.944 7.664 1.00 15.00 ATOM 48 CA ASN A 208 85.698 -32.402 8.916 1.00 15.00 ATOM 49 CA GLN A 209 87.915 -35.331 9.998 1.00 15.00 ATOM 50 CA ILE A 210 87.957 -34.380 13.685 1.00 15.00 ATOM 51 CA GLN A 211 87.392 -36.503 16.752 1.00 15.00 ATOM 52 CA PRO A 212 85.389 -36.011 19.962 1.00 15.00 ATOM 53 CA ILE A 213 87.245 -36.236 23.260 1.00 15.00 ATOM 54 CA ALA A 214 83.886 -36.963 24.897 1.00 15.00 ATOM 55 CA GLU A 215 80.183 -36.636 24.270 1.00 15.00 ATOM 56 CA ARG A 216 78.069 -37.250 27.380 1.00 15.00 ATOM 57 CA GLU A 217 74.255 -37.310 27.441 1.00 15.00 ATOM 58 CA GLY A 218 72.420 -34.461 29.163 1.00 15.00 ATOM 59 CA ASP A 219 68.765 -34.258 30.127 1.00 15.00 ATOM 60 CA TRP A 220 67.816 -30.783 29.019 1.00 15.00 ATOM 61 CA SER A 221 67.760 -29.542 32.594 1.00 15.00 ATOM 62 CA ALA A 222 69.378 -26.235 33.530 1.00 15.00 ATOM 63 CA MET A 223 71.386 -28.430 35.813 1.00 15.00 ATOM 64 CA SER A 224 72.293 -30.807 32.970 1.00 15.00 ATOM 65 CA GLY A 225 75.318 -28.798 32.026 1.00 15.00 ATOM 66 CA PHE A 226 76.981 -28.525 35.428 1.00 15.00 ATOM 67 CA GLN A 227 77.166 -32.071 36.677 1.00 15.00 ATOM 68 CA GLN A 228 78.087 -33.331 33.282 1.00 15.00 ATOM 69 CA THR A 229 80.805 -30.884 32.315 1.00 15.00 ATOM 70 CA MET A 230 81.984 -30.827 35.880 1.00 15.00 ATOM 71 CA GLN A 231 82.522 -34.490 36.423 1.00 15.00 ATOM 72 CA MET A 232 83.986 -35.115 32.996 1.00 15.00 ATOM 73 CA LEU A 233 86.319 -32.130 33.050 1.00 15.00 ATOM 74 CA ASN A 234 87.282 -33.729 36.400 1.00 15.00 ATOM 75 CA GLU A 235 87.837 -36.928 34.487 1.00 15.00 ATOM 76 CA GLY A 236 90.409 -34.914 32.509 1.00 15.00 ATOM 77 CA ILE A 237 88.414 -33.530 29.640 1.00 15.00 ATOM 78 CA VAL A 238 89.119 -30.029 28.386 1.00 15.00 ATOM 79 CA PRO A 239 88.292 -29.765 24.634 1.00 15.00 ATOM 80 CA THR A 240 88.857 -26.414 23.030 1.00 15.00 ATOM 81 CA ALA A 241 85.086 -26.410 22.961 1.00 15.00 ATOM 82 CA MET A 242 81.740 -28.217 23.003 1.00 15.00 ATOM 83 CA LEU A 243 78.300 -27.642 21.557 1.00 15.00 ATOM 84 CA VAL A 244 74.987 -28.678 23.015 1.00 15.00 ATOM 85 CA ALA A 245 71.292 -28.529 22.214 1.00 15.00 ATOM 86 CA ASN A 246 69.211 -26.613 24.738 1.00 15.00 ATOM 87 CA ASP A 247 71.258 -23.503 25.316 1.00 15.00 ATOM 88 CA GLN A 248 69.727 -23.407 28.820 1.00 15.00 ATOM 89 CA MET A 249 70.870 -26.887 29.902 1.00 15.00 ATOM 90 CA ALA A 250 74.192 -26.156 28.307 1.00 15.00 ATOM 91 CA LEU A 251 74.316 -23.161 30.677 1.00 15.00 ATOM 92 CA GLY A 252 75.380 -25.499 33.392 1.00 15.00 ATOM 93 CA ALA A 253 78.603 -25.891 31.445 1.00 15.00 ATOM 94 CA MET A 254 79.347 -22.233 32.109 1.00 15.00 ATOM 95 CA ARG A 255 79.048 -22.655 35.877 1.00 15.00 ATOM 96 CA ALA A 256 81.282 -25.667 35.350 1.00 15.00 ATOM 97 CA ILE A 257 84.287 -24.192 33.496 1.00 15.00 ATOM 98 CA THR A 258 84.027 -21.022 35.497 1.00 15.00 ATOM 99 CA GLU A 259 83.378 -22.455 38.977 1.00 15.00 ATOM 100 CA SER A 260 85.724 -25.309 38.058 1.00 15.00 ATOM 101 CA GLY A 261 88.107 -22.429 37.571 1.00 15.00 ATOM 102 CA LEU A 262 88.737 -21.432 33.975 1.00 15.00 ATOM 103 CA ARG A 263 87.381 -19.299 31.133 1.00 15.00 ATOM 104 CA VAL A 264 84.560 -20.582 28.937 1.00 15.00 ATOM 105 CA GLY A 265 84.780 -19.670 25.291 1.00 15.00 ATOM 106 CA ALA A 266 88.296 -18.294 25.700 1.00 15.00 ATOM 107 CA ASP A 267 89.688 -21.429 27.328 1.00 15.00 ATOM 108 CA ILE A 268 87.015 -23.889 26.224 1.00 15.00 ATOM 109 CA SER A 269 84.667 -22.467 23.582 1.00 15.00 ATOM 110 CA VAL A 270 81.082 -23.752 23.478 1.00 15.00 ATOM 111 CA VAL A 271 77.679 -23.187 21.968 1.00 15.00 ATOM 112 CA GLY A 272 74.087 -24.056 22.504 1.00 15.00 ATOM 113 CA TYR A 273 71.117 -24.529 20.310 1.00 15.00 ATOM 114 CA ASP A 274 67.628 -23.018 20.241 1.00 15.00 ATOM 115 CA ASP A 275 68.374 -19.473 21.537 1.00 15.00 ATOM 116 CA THR A 276 66.476 -18.306 24.601 1.00 15.00 ATOM 117 CA GLU A 277 66.645 -14.666 25.724 1.00 15.00 ATOM 118 CA ASP A 278 68.200 -16.010 28.943 1.00 15.00 ATOM 119 CA SER A 279 71.244 -16.971 26.838 1.00 15.00 ATOM 120 CA SER A 280 71.352 -13.508 25.365 1.00 15.00 ATOM 121 CA CYS A 281 71.824 -12.355 28.898 1.00 15.00 ATOM 122 CA TYR A 282 74.112 -15.175 29.910 1.00 15.00 ATOM 123 CA ILE A 283 77.493 -14.323 31.470 1.00 15.00 ATOM 124 CA PRO A 284 79.168 -15.332 28.236 1.00 15.00 ATOM 125 CA PRO A 285 76.535 -14.229 25.683 1.00 15.00 ATOM 126 CA LEU A 286 76.074 -17.551 23.940 1.00 15.00 ATOM 127 CA THR A 287 77.290 -17.983 20.394 1.00 15.00 ATOM 128 CA THR A 288 74.611 -20.514 19.431 1.00 15.00 ATOM 129 CA ILE A 289 71.795 -21.267 17.006 1.00 15.00 ATOM 130 CA LYS A 290 68.008 -21.151 17.051 1.00 15.00 ATOM 131 CA GLN A 291 64.845 -22.818 15.728 1.00 15.00 TER