1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 Kalodimos, C.G. Bonvin, A.M.J.J. Salinas, R.K. Wechselberger, R. Boelens, R. Kaptein, R. http://mmcif.pdb.org/dictionaries/ascii/mmcif_pdbx.dic C3 H7 N O2 89.093 y ALANINE L-peptide linking C6 H15 N4 O2 1 175.209 y ARGININE L-peptide linking C4 H8 N2 O3 132.118 y ASPARAGINE L-peptide linking C4 H7 N O4 133.103 y ASPARTIC ACID L-peptide linking C3 H7 N O2 S 121.158 y CYSTEINE L-peptide linking C10 H14 N5 O6 P 331.222 y 2'-DEOXYADENOSINE-5'-MONOPHOSPHATE DNA linking C9 H14 N3 O7 P 307.197 y 2'-DEOXYCYTIDINE-5'-MONOPHOSPHATE DNA linking C10 H14 N5 O7 P 347.221 y 2'-DEOXYGUANOSINE-5'-MONOPHOSPHATE DNA linking C10 H15 N2 O8 P 322.208 y THYMIDINE-5'-MONOPHOSPHATE DNA linking C5 H10 N2 O3 146.144 y GLUTAMINE L-peptide linking C5 H9 N O4 147.129 y GLUTAMIC ACID L-peptide linking C2 H5 N O2 75.067 y GLYCINE peptide linking C6 H10 N3 O2 1 156.162 y HISTIDINE L-peptide linking C6 H13 N O2 131.173 y ISOLEUCINE L-peptide linking C6 H13 N O2 131.173 y LEUCINE L-peptide linking C6 H15 N2 O2 1 147.195 y LYSINE L-peptide linking C5 H11 N O2 S 149.211 y METHIONINE L-peptide linking C5 H9 N O2 115.130 y PROLINE L-peptide linking C3 H7 N O3 105.093 y SERINE L-peptide linking C4 H9 N O3 119.119 y THREONINE L-peptide linking C9 H11 N O3 181.189 y TYROSINE L-peptide linking C5 H11 N O2 117.146 y VALINE L-peptide linking UK EMBO J. EMJODG 0897 0261-4189 21 2866 2876 10.1093/emboj/cdf318 12065400 Plasticity in protein-DNA recognition: lac repressor interacts with its natural operator 01 through alternative conformations of its DNA-binding domain. 2002 US Proc.Natl.Acad.Sci.USA PNASA6 0040 0027-8424 98 6039 6044 10.1073/pnas.101129898 Strong DNA binding by covalently linked dimeric lac headpiece: evidence for the crucial role of the hinge helices 2001 10.2210/pdb1l1m/pdb pdb_00001l1m 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 0.00000 0.00000 0.00000 1 SINGLE WAVELENGTH M 1 1.0 Lac operator O1; this is the wild-type operator sequence of the lac operon in E. coli. 7143.645 5'-D(*GP*AP*AP*TP*TP*GP*TP*GP*AP*GP*CP*GP*GP*AP*TP*AP*AP*CP*AP*AP*TP*TP*T)-3' 1 syn polymer Lac operator O1; this is the wild-type operator sequence of the lac operon in E. coli. 6974.534 5'-D(*AP*AP*AP*TP*TP*GP*TP*TP*AP*TP*CP*CP*GP*CP*TP*CP*AP*CP*AP*AP*TP*TP*C)-3' 1 syn polymer 6822.755 Lactose operon repressor N-terminal DNA-binding domain, Residues 1-62 V52C 2 man polymer no no (DG)(DA)(DA)(DT)(DT)(DG)(DT)(DG)(DA)(DG)(DC)(DG)(DG)(DA)(DT)(DA)(DA)(DC)(DA)(DA) (DT)(DT)(DT) GAATTGTGAGCGGATAACAATTT C polydeoxyribonucleotide no no (DA)(DA)(DA)(DT)(DT)(DG)(DT)(DT)(DA)(DT)(DC)(DC)(DG)(DC)(DT)(DC)(DA)(DC)(DA)(DA) (DT)(DT)(DC) AAATTGTTATCCGCTCACAATTC D polydeoxyribonucleotide no no MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRCAQQLAGKQSL MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRCAQQLAGKQSL A,B polypeptide(L) n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n Escherichia Escherichia sample LACI 562 Escherichia coli 562 Escherichia coli DH9 PLASMID PGP1-2,PET-HP62 0.122 1 19 C 1 D 23 0.621 C_DG1:DC23_D 1 2.776 -0.396 -0.084 -0.195 0.857 1 20 C 2 D 22 -2.858 C_DA2:DT22_D 2 0.733 -0.005 -0.120 -0.290 -1.446 1 20 C 3 D 21 0.159 C_DA3:DT21_D 3 0.327 0.126 -0.003 -0.213 0.444 1 20 C 4 D 20 2.221 C_DT4:DA20_D 4 2.365 -0.128 -0.050 -0.135 1.750 1 20 C 5 D 19 -4.220 C_DT5:DA19_D 5 3.877 -0.189 -0.237 -0.258 -0.368 1 19 C 6 D 18 3.908 C_DG6:DC18_D 6 5.025 -0.003 -0.114 -0.088 0.220 1 20 C 7 D 17 -0.762 C_DT7:DA17_D 7 3.478 0.019 -0.080 -0.175 -0.345 1 19 C 8 D 16 0.180 C_DG8:DC16_D 8 6.469 -0.055 -0.308 -0.205 -1.395 1 20 C 9 D 15 -0.616 C_DA9:DT15_D 9 6.571 0.232 -0.238 -0.115 1.486 1 19 C 10 D 14 6.396 C_DG10:DC14_D 10 3.889 -0.816 -0.105 -0.225 -2.885 1 19 C 11 D 13 -5.233 C_DC11:DG13_D 11 7.447 -0.126 -0.211 -0.092 0.738 1 19 C 12 D 12 -7.950 C_DG12:DC12_D 12 10.482 -0.294 -0.316 -0.260 -0.579 1 19 C 13 D 11 4.532 C_DG13:DC11_D 13 6.890 -0.151 -0.182 -0.079 -3.756 1 20 C 14 D 10 -5.149 C_DA14:DT10_D 14 10.646 -0.318 -0.205 -0.131 1.028 1 20 C 15 D 9 -8.185 C_DT15:DA9_D 15 3.752 -0.252 0.002 -0.087 3.049 1 20 C 16 D 8 -8.769 C_DA16:DT8_D 16 3.898 0.051 0.074 -0.105 -3.202 1 20 C 17 D 7 -4.543 C_DA17:DT7_D 17 8.362 0.003 -0.402 -0.306 -1.428 1 19 C 18 D 6 -1.285 C_DC18:DG6_D 18 4.843 -0.136 0.032 -0.175 -4.780 1 20 C 19 D 5 -8.760 C_DA19:DT5_D 19 -0.849 0.208 -0.175 -0.158 -1.132 1 20 C 20 D 4 0.835 C_DA20:DT4_D 20 2.500 0.183 -0.133 -0.154 1.068 1 20 C 21 D 3 1.399 C_DT21:DA3_D 21 0.469 -0.178 -0.006 -0.149 -0.323 1 20 C 22 D 2 -1.278 C_DT22:DA2_D 22 -2.398 0.059 -0.084 -0.266 -0.012 1 20 C 23 D 1 -4.572 C_DT23:DA1_D 23 1.000 -0.008 -0.123 -0.196 3.046 38.642 C C 1 2 4.364 D D 23 22 3.067 2.885 -0.321 -0.218 CC_DG1DA2:DT22DC23_DD 1 -0.410 0.620 38.537 -0.661 0.439 3.065 37.771 C C 2 3 3.849 D D 22 21 3.096 2.487 -0.006 -0.221 CC_DA2DA3:DT21DT22_DD 2 -3.413 5.283 37.543 -0.645 -0.407 2.984 34.035 C C 3 4 5.285 D D 21 20 3.048 3.089 0.077 -0.575 CC_DA3DT4:DA20DT21_DD 3 -0.410 0.701 33.896 -1.438 -0.192 2.856 33.865 C C 4 5 18.510 D D 20 19 3.161 10.584 0.008 -0.438 CC_DT4DT5:DA19DA20_DD 4 4.118 -7.201 31.956 -2.368 0.616 2.895 36.256 C C 5 6 14.268 D D 19 18 3.093 8.793 0.602 -0.357 CC_DT5DG6:DC18DA19_DD 5 -1.588 2.577 35.173 -1.720 -1.174 3.258 36.512 C C 6 7 -2.022 D D 18 17 3.257 -1.266 -0.244 -0.359 CC_DG6DT7:DA17DC18_DD 6 1.247 -1.991 36.471 -0.398 0.561 3.061 35.501 C C 7 8 6.446 D D 17 16 3.118 3.922 0.098 -0.381 CC_DT7DG8:DC16DA17_DD 7 1.325 -2.178 35.267 -1.169 0.023 3.190 35.883 C C 8 9 5.898 D D 16 15 3.250 3.628 0.079 -0.447 CC_DG8DA9:DT15DC16_DD 8 -0.027 0.045 35.705 -1.239 -0.132 3.305 31.997 C C 9 10 -4.304 D D 15 14 3.333 -2.368 0.474 -0.428 CC_DA9DG10:DC14DT15_DD 9 -2.676 4.864 31.802 -0.340 -1.352 3.006 39.604 C C 10 11 10.759 D D 14 13 3.163 7.250 -0.886 -0.375 CC_DG10DC11:DG13DC14_DD 10 1.792 -2.659 38.922 -1.361 1.507 3.737 43.438 C C 11 12 55.976 D D 13 12 3.547 35.717 0.649 2.025 CC_DC11DG12:DC12DG13_DD 11 0.986 -1.545 25.116 -2.278 -0.738 2.534 34.467 C C 12 13 21.418 D D 12 11 3.137 12.371 0.908 -0.651 CC_DG12DG13:DC11DC12_DD 12 -5.387 9.327 31.791 -2.837 -2.289 3.328 34.122 C C 13 14 12.759 D D 11 10 3.535 7.430 -0.645 -0.591 CC_DG13DA14:DT10DC11_DD 13 0.085 -0.146 33.326 -2.259 1.114 3.388 35.334 C C 14 15 -11.237 D D 10 9 3.382 -6.778 -0.427 -0.261 CC_DA14DT15:DA9DT10_DD 14 -1.793 2.973 34.653 0.617 0.427 2.679 37.445 C C 15 16 23.143 D D 9 8 2.972 14.492 -0.249 -0.222 CC_DT15DA16:DT8DA9_DD 15 -1.340 2.139 34.595 -2.060 0.229 4.266 35.692 C C 16 17 -7.823 D D 8 7 4.320 -4.778 0.098 0.009 CC_DA16DA17:DT7DT8_DD 16 -2.525 4.135 35.294 0.927 -0.642 3.184 36.038 C C 17 18 4.953 D D 7 6 3.228 3.058 0.043 -0.271 CC_DA17DC18:DG6DT7_DD 17 -2.490 4.033 35.829 -0.864 -0.417 3.085 38.985 C C 18 19 18.878 D D 6 5 3.236 12.379 -0.605 0.241 CC_DC18DA19:DT5DG6_DD 18 3.660 -5.581 36.865 -1.129 1.347 3.339 33.865 C C 19 20 7.896 D D 5 4 3.525 4.541 0.244 0.048 CC_DA19DA20:DT4DT5_DD 19 -8.329 14.481 32.546 -0.701 -1.856 3.082 32.820 C C 20 21 5.433 D D 4 3 3.143 3.065 -0.066 -0.542 CC_DA20DT21:DA3DT4_DD 20 -0.976 1.730 32.666 -1.461 -0.042 3.075 38.229 C C 21 22 -0.026 D D 3 2 3.086 -0.017 -0.115 -0.157 CC_DT21DT22:DA2DA3_DD 21 2.165 -3.307 38.170 -0.238 0.433 2.920 36.357 C C 22 23 11.174 D D 2 1 3.047 6.924 0.080 -0.387 CC_DT22DT23:DA1DA2_DD 22 2.995 -4.833 35.591 -1.510 0.256 database_2 pdbx_nmr_software pdbx_struct_assembly pdbx_struct_oper_list struct_ref_seq_dif repository Initial release Version format compliance Version format compliance Data collection Database references Derived calculations 1 0 2002-06-26 1 1 2008-04-28 1 2 2011-07-13 1 3 2021-10-27 _database_2.pdbx_DOI _database_2.pdbx_database_accession _pdbx_nmr_software.name _struct_ref_seq_dif.details RCSB Y RCSB 2002-02-19 REL REL This structure was determined using standard 2D and 3D homo- and heteronuclearnuclear techniques. 13C-15N labeled protein was used and unlabeled nucleotide. IN ADDITION ISOTOPE FILTER EXPERIMENTS WERE APPLIED TO OBTAIN ADDITIONAL ASSIGNMENTS AND TO ASSIGN INTER-MOLECULAR NOES. FOR FURTHER DETAILS SEE THE REFERENCE DESCRIBING THE STRUCTURES. structures with the lowest energy 100 20 3D_13C-separated_NOESY 3D_15N-separated_NOESY 2D NOESY 10mM KPi, 20mM KCl 6.0 ambient 315 K The structure of the complex was calculated as follows. First the structure of the dimeric lac HP62-V52C was calculated using only protein NMR restraints. The 50 best structures were selected and docked onto the natural lac operator B-DNA using simulated annealing. Distance and planarity restraints for the DNA were incorporated in order to keep DNA close to B-DNA but allowing a bend necessary to accommodate the two headpiece molecules on the DNA. SIMULATED ANNEALING FOLLOWED BY RESTRAINED MDR 1 closest to the average 2mM Lac-HP62-V52C U-15N,13C, 10mM KPi, 20mM KCl, 90% H2O, 10% D2O 90% H2O/10% D2O Bruker collection XwinNMR 3.1 Delaglio processing NMRPipe 1.0 Johnson data analysis NMRView 5.0.4 Brunger structure solution CNS 1.1 Brunger refinement CNS 1.1 750 Bruker DRX 600 Bruker DRX G 1 n 1 DG 1 C A 2 n 2 DA 2 C A 3 n 3 DA 3 C T 4 n 4 DT 4 C T 5 n 5 DT 5 C G 6 n 6 DG 6 C T 7 n 7 DT 7 C G 8 n 8 DG 8 C A 9 n 9 DA 9 C G 10 n 10 DG 10 C C 11 n 11 DC 11 C G 12 n 12 DG 12 C G 13 n 13 DG 13 C A 14 n 14 DA 14 C T 15 n 15 DT 15 C A 16 n 16 DA 16 C A 17 n 17 DA 17 C C 18 n 18 DC 18 C A 19 n 19 DA 19 C A 20 n 20 DA 20 C T 21 n 21 DT 21 C T 22 n 22 DT 22 C T 23 n 23 DT 23 C A 1 n 1 DA 1 D A 2 n 2 DA 2 D A 3 n 3 DA 3 D T 4 n 4 DT 4 D T 5 n 5 DT 5 D G 6 n 6 DG 6 D T 7 n 7 DT 7 D T 8 n 8 DT 8 D A 9 n 9 DA 9 D T 10 n 10 DT 10 D C 11 n 11 DC 11 D C 12 n 12 DC 12 D G 13 n 13 DG 13 D C 14 n 14 DC 14 D T 15 n 15 DT 15 D C 16 n 16 DC 16 D A 17 n 17 DA 17 D C 18 n 18 DC 18 D A 19 n 19 DA 19 D A 20 n 20 DA 20 D T 21 n 21 DT 21 D T 22 n 22 DT 22 D C 23 n 23 DC 23 D MET 1 n 1 MET 1 A LYS 2 n 2 LYS 2 A PRO 3 n 3 PRO 3 A VAL 4 n 4 VAL 4 A THR 5 n 5 THR 5 A LEU 6 n 6 LEU 6 A TYR 7 n 7 TYR 7 A ASP 8 n 8 ASP 8 A VAL 9 n 9 VAL 9 A ALA 10 n 10 ALA 10 A GLU 11 n 11 GLU 11 A TYR 12 n 12 TYR 12 A ALA 13 n 13 ALA 13 A GLY 14 n 14 GLY 14 A VAL 15 n 15 VAL 15 A SER 16 n 16 SER 16 A TYR 17 n 17 TYR 17 A GLN 18 n 18 GLN 18 A THR 19 n 19 THR 19 A VAL 20 n 20 VAL 20 A SER 21 n 21 SER 21 A ARG 22 n 22 ARG 22 A VAL 23 n 23 VAL 23 A VAL 24 n 24 VAL 24 A ASN 25 n 25 ASN 25 A GLN 26 n 26 GLN 26 A ALA 27 n 27 ALA 27 A SER 28 n 28 SER 28 A HIS 29 n 29 HIS 29 A VAL 30 n 30 VAL 30 A SER 31 n 31 SER 31 A ALA 32 n 32 ALA 32 A LYS 33 n 33 LYS 33 A THR 34 n 34 THR 34 A ARG 35 n 35 ARG 35 A GLU 36 n 36 GLU 36 A LYS 37 n 37 LYS 37 A VAL 38 n 38 VAL 38 A GLU 39 n 39 GLU 39 A ALA 40 n 40 ALA 40 A ALA 41 n 41 ALA 41 A MET 42 n 42 MET 42 A ALA 43 n 43 ALA 43 A GLU 44 n 44 GLU 44 A LEU 45 n 45 LEU 45 A ASN 46 n 46 ASN 46 A TYR 47 n 47 TYR 47 A ILE 48 n 48 ILE 48 A PRO 49 n 49 PRO 49 A ASN 50 n 50 ASN 50 A ARG 51 n 51 ARG 51 A CYS 52 n 52 CYS 52 A ALA 53 n 53 ALA 53 A GLN 54 n 54 GLN 54 A GLN 55 n 55 GLN 55 A LEU 56 n 56 LEU 56 A ALA 57 n 57 ALA 57 A GLY 58 n 58 GLY 58 A LYS 59 n 59 LYS 59 A GLN 60 n 60 GLN 60 A SER 61 n 61 SER 61 A LEU 62 n 62 LEU 62 A MET 1 n 1 MET 1 B LYS 2 n 2 LYS 2 B PRO 3 n 3 PRO 3 B VAL 4 n 4 VAL 4 B THR 5 n 5 THR 5 B LEU 6 n 6 LEU 6 B TYR 7 n 7 TYR 7 B ASP 8 n 8 ASP 8 B VAL 9 n 9 VAL 9 B ALA 10 n 10 ALA 10 B GLU 11 n 11 GLU 11 B TYR 12 n 12 TYR 12 B ALA 13 n 13 ALA 13 B GLY 14 n 14 GLY 14 B VAL 15 n 15 VAL 15 B SER 16 n 16 SER 16 B TYR 17 n 17 TYR 17 B GLN 18 n 18 GLN 18 B THR 19 n 19 THR 19 B VAL 20 n 20 VAL 20 B SER 21 n 21 SER 21 B ARG 22 n 22 ARG 22 B VAL 23 n 23 VAL 23 B VAL 24 n 24 VAL 24 B ASN 25 n 25 ASN 25 B GLN 26 n 26 GLN 26 B ALA 27 n 27 ALA 27 B SER 28 n 28 SER 28 B HIS 29 n 29 HIS 29 B VAL 30 n 30 VAL 30 B SER 31 n 31 SER 31 B ALA 32 n 32 ALA 32 B LYS 33 n 33 LYS 33 B THR 34 n 34 THR 34 B ARG 35 n 35 ARG 35 B GLU 36 n 36 GLU 36 B LYS 37 n 37 LYS 37 B VAL 38 n 38 VAL 38 B GLU 39 n 39 GLU 39 B ALA 40 n 40 ALA 40 B ALA 41 n 41 ALA 41 B MET 42 n 42 MET 42 B ALA 43 n 43 ALA 43 B GLU 44 n 44 GLU 44 B LEU 45 n 45 LEU 45 B ASN 46 n 46 ASN 46 B TYR 47 n 47 TYR 47 B ILE 48 n 48 ILE 48 B PRO 49 n 49 PRO 49 B ASN 50 n 50 ASN 50 B ARG 51 n 51 ARG 51 B CYS 52 n 52 CYS 52 B ALA 53 n 53 ALA 53 B GLN 54 n 54 GLN 54 B GLN 55 n 55 GLN 55 B LEU 56 n 56 LEU 56 B ALA 57 n 57 ALA 57 B GLY 58 n 58 GLY 58 B LYS 59 n 59 LYS 59 B GLN 60 n 60 GLN 60 B SER 61 n 61 SER 61 B LEU 62 n 62 LEU 62 B author_defined_assembly 4 tetrameric 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 0.0000000000 0.0000000000 0.0000000000 1.0000000000 1_555 identity operation 0.0000000000 0.0000000000 0.0000000000 1 C D H21 O2 DG DC 10 14 1.53 1 C D H21 O2 DG DC 13 11 1.58 1 C D H61 O4 DA DT 19 5 1.60 2 C D H21 O2 DG DC 10 14 1.55 2 C D H21 O2 DG DC 6 18 1.57 2 C D H21 O2 DG DC 13 11 1.59 2 C D H21 O2 DG DC 1 23 1.59 2 C D O2 H21 DC DG 18 6 1.60 3 A A HG HB2 LEU TYR 6 17 1.33 3 C D H21 O2 DG DC 10 14 1.56 3 C D H21 O2 DG DC 13 11 1.56 3 C D H21 O2 DG DC 8 16 1.58 3 C D H21 O2 DG DC 1 23 1.58 4 C B H22 HB2 DG ALA 13 57 1.24 4 C D H21 O2 DG DC 10 14 1.55 4 C D H21 O2 DG DC 13 11 1.57 5 C B H22 HB1 DG ALA 13 57 1.28 5 C D H21 O2 DG DC 1 23 1.54 5 C D H21 O2 DG DC 10 14 1.55 5 C D H21 O2 DG DC 13 11 1.56 5 C D H21 O2 DG DC 6 18 1.59 6 C D H21 O2 DG DC 10 14 1.56 6 C D H21 O2 DG DC 8 16 1.58 6 C D H21 O2 DG DC 6 18 1.59 7 A A HB HA VAL TYR 4 47 1.24 7 C D O2 H21 DC DG 18 6 1.56 7 C D H21 O2 DG DC 10 14 1.56 7 C D H21 O2 DG DC 6 18 1.58 8 C D H21 O2 DG DC 10 14 1.52 8 C D H21 O2 DG DC 13 11 1.55 8 C B N7 HH DA TYR 14 17 1.55 8 B B HG1 OD2 THR ASP 5 8 1.57 8 C D H21 O2 DG DC 1 23 1.59 8 C D H21 O2 DG DC 6 18 1.60 9 C B H22 HB3 DG ALA 13 57 1.22 9 A A HG HB2 LEU TYR 6 17 1.33 9 C D H21 O2 DG DC 10 14 1.58 10 B B HA HB2 ARG GLN 22 26 1.26 10 C D H21 O2 DG DC 13 11 1.52 10 C D H21 O2 DG DC 10 14 1.58 10 C D H21 O2 DG DC 6 18 1.58 11 B B HA HA VAL ALA 23 27 1.29 11 C D H21 O2 DG DC 13 11 1.52 11 C D H21 O2 DG DC 10 14 1.55 11 C D H21 O2 DG DC 6 18 1.58 12 A A HA HB2 GLN LYS 55 59 1.19 12 C B H22 HB2 DG ALA 13 57 1.22 12 C D H21 O2 DG DC 10 14 1.56 12 C D H21 O2 DG DC 6 18 1.58 12 C D H21 O2 DG DC 13 11 1.60 13 C D H21 O2 DG DC 6 18 1.57 13 C D H21 O2 DG DC 10 14 1.58 13 C D H21 O2 DG DC 13 11 1.58 14 C B H22 HB1 DG ALA 13 57 1.27 14 C D H21 O2 DG DC 10 14 1.53 14 C D O2 H21 DC DG 18 6 1.56 14 C D H21 O2 DG DC 6 18 1.56 14 C D H21 O2 DG DC 13 11 1.58 14 C B N7 HH DA TYR 14 17 1.58 15 C B H22 HB1 DG ALA 13 57 1.27 15 C D H21 O2 DG DC 13 11 1.54 15 C D H21 O2 DG DC 10 14 1.55 15 C B N7 HH DA TYR 14 17 1.58 15 C D H21 O2 DG DC 6 18 1.58 15 C D H21 O2 DG DC 1 23 1.58 16 B B HB H VAL ILE 4 48 1.34 16 C D H21 O2 DG DC 10 14 1.56 16 C D H21 O2 DG DC 6 18 1.57 16 C D H61 O4 DA DT 19 5 1.59 16 C D H21 O2 DG DC 13 11 1.59 16 C D H21 O2 DG DC 1 23 1.60 17 C D H21 O2 DG DC 13 11 1.56 17 C D H21 O2 DG DC 10 14 1.57 18 A A HG3 HG21 ARG VAL 22 30 1.34 18 C D H21 O2 DG DC 10 14 1.53 18 C D H21 O2 DG DC 13 11 1.55 18 C D H21 O2 DG DC 6 18 1.58 19 C B H2' HE1 DG TYR 13 7 1.33 19 C D H21 O2 DG DC 13 11 1.53 19 C D H21 O2 DG DC 10 14 1.54 20 B B HA HB2 ARG GLN 22 26 1.26 20 C D H21 O2 DG DC 13 11 1.52 20 C D H21 O2 DG DC 10 14 1.58 20 C D H21 O2 DG DC 6 18 1.58 16 2.04 0.30 108.30 110.34 C C C O4' C1' N9 DG DG DG 13 13 13 N 1 A VAL 15 -123.56 -166.54 1 A GLN 26 62.49 64.59 1 A ALA 27 -121.75 -84.22 1 A ASN 46 63.63 64.98 1 A LYS 59 69.62 104.62 1 B ASN 25 -123.52 -73.26 1 B PRO 49 -38.67 138.81 1 B ASN 50 -62.59 97.13 1 B LYS 59 -153.77 65.90 2 A ALA 27 -95.15 -137.15 2 A ASN 46 68.34 63.02 2 B ASN 25 -98.20 -75.08 2 B ALA 27 -50.77 95.20 2 B SER 31 -86.77 41.26 2 B ALA 32 67.84 -61.45 2 B ASN 46 67.36 65.73 2 B ASN 50 -58.17 95.73 2 B LYS 59 62.83 89.50 3 A VAL 15 -124.12 -166.15 3 A ALA 27 -94.14 -141.58 3 A ASN 46 66.65 64.83 3 A LYS 59 39.81 -138.83 3 B LYS 2 62.09 70.56 3 B ASN 25 -64.29 -74.91 3 B GLN 26 -146.35 16.33 3 B TYR 47 -59.27 108.77 3 B PRO 49 -30.44 119.13 3 B ASN 50 -67.19 88.34 3 B ALA 57 -69.64 -80.29 3 B LYS 59 70.40 120.81 4 A ALA 27 -85.89 30.17 4 A SER 28 60.59 -172.82 4 A ASN 46 67.75 63.50 4 B ASN 25 -128.45 -72.18 4 B PRO 49 -28.21 122.51 4 B ALA 57 -73.61 44.12 4 B SER 61 -88.73 41.04 5 A ALA 27 -103.02 -148.58 5 A ASN 46 64.51 67.18 5 A GLN 60 -66.60 90.94 5 B ASN 25 -72.55 -73.74 5 B GLN 26 -167.23 41.06 5 B ALA 27 64.61 -117.15 5 B SER 28 58.94 120.23 5 B TYR 47 -52.66 108.99 5 B PRO 49 -30.86 130.49 5 B LEU 56 -70.63 -70.60 6 A LYS 2 -159.93 81.71 6 A GLN 26 -129.10 -53.38 6 A SER 31 -74.07 -89.14 6 A ALA 32 -160.24 -62.02 6 A ASN 46 63.48 70.60 6 A SER 61 66.50 -168.96 6 B ASN 25 -79.08 -85.91 6 B ALA 27 -28.82 96.55 6 B ASN 46 61.65 63.32 6 B ASN 50 -60.14 99.71 6 B LYS 59 67.53 162.34 7 A VAL 15 -129.29 -165.54 7 A ALA 27 -106.82 -153.07 7 A ASN 46 69.50 62.27 7 A LYS 59 32.95 -106.25 7 B ASN 25 -123.17 -70.55 7 B PRO 49 -39.35 129.66 7 B ASN 50 -54.74 99.73 7 B GLN 60 -100.24 72.33 8 A LYS 2 70.68 119.19 8 A GLN 26 62.17 63.40 8 A ALA 27 -106.63 -166.52 8 A HIS 29 67.99 -60.52 8 A LYS 59 72.28 106.42 8 A GLN 60 69.29 109.47 8 B ASN 25 -126.40 -72.34 8 B PRO 49 -35.20 123.05 8 B ASN 50 -55.49 97.45 8 B ALA 57 -71.76 34.45 8 B SER 61 -94.23 57.28 9 A VAL 15 -127.10 -166.48 9 A ALA 27 -91.88 -159.06 9 A ASN 46 67.42 65.63 9 A GLN 60 72.69 127.55 9 B GLN 26 -144.38 -109.51 9 B ALA 27 -161.01 22.29 9 B PRO 49 -32.03 127.51 9 B ASN 50 -52.56 99.55 9 B GLN 60 54.83 -112.98 10 A VAL 15 -118.96 -166.48 10 A ALA 27 -65.56 81.32 10 A SER 31 -70.81 -84.05 10 A ALA 32 -168.02 -54.72 10 A ASN 46 63.85 67.01 10 B ASN 25 -146.95 -34.47 10 B SER 28 71.93 179.66 10 B HIS 29 37.92 36.35 10 B PRO 49 -31.61 131.78 10 B ASN 50 -60.36 84.59 10 B LYS 59 64.30 92.66 11 A LYS 2 -173.54 -56.53 11 A SER 28 64.66 -171.52 11 A LYS 59 69.70 -52.90 11 B ASN 25 -75.47 -80.29 11 B SER 31 -76.69 37.47 11 B ALA 32 68.11 -57.64 11 B ASN 46 61.37 67.16 11 B PRO 49 -35.41 130.06 11 B ASN 50 -44.98 108.83 12 A VAL 15 -121.65 -167.63 12 A ALA 27 -116.67 -152.20 12 A ASN 46 63.97 61.93 12 B LYS 2 60.30 83.58 12 B ASN 25 -73.13 -86.39 12 B GLN 26 -153.18 44.79 12 B ALA 27 60.11 -135.54 12 B SER 28 65.23 137.87 12 B ASN 46 68.82 61.29 12 B TYR 47 -55.00 108.37 12 B PRO 49 -27.24 126.75 12 B SER 61 65.49 104.01 13 A VAL 15 -123.71 -164.24 13 A SER 28 60.76 -174.60 13 A ASN 46 62.16 66.84 13 A LYS 59 70.34 -58.70 13 B ASN 25 -77.52 -74.88 13 B GLN 26 -169.03 47.08 13 B ALA 27 57.87 -129.21 13 B SER 28 70.74 124.20 13 B PRO 49 -34.27 125.45 13 B LYS 59 69.15 -73.06 13 B GLN 60 -133.26 -46.04 13 B SER 61 -148.65 -17.93 14 A VAL 15 -124.47 -162.37 14 A ALA 27 -103.72 -155.90 14 A ASN 46 62.92 67.28 14 A LYS 59 68.19 112.82 14 B LYS 2 53.28 75.19 14 B ASN 25 -119.52 -85.16 14 B ALA 27 -68.69 57.25 14 B PRO 49 -33.43 127.88 14 B ASN 50 -55.21 91.67 15 A ASN 46 59.20 77.06 15 A GLN 60 62.93 66.80 15 B ASN 25 -77.73 -73.24 15 B GLN 26 -168.27 44.45 15 B ALA 27 62.03 -130.63 15 B SER 28 67.31 148.28 15 B SER 31 -84.39 35.74 15 B ALA 32 69.27 -53.66 15 B PRO 49 -35.84 127.07 15 B ASN 50 -52.76 99.54 15 B LEU 56 -66.46 -70.54 16 A LYS 2 53.66 71.74 16 A VAL 15 -124.63 -166.52 16 A GLN 26 57.79 76.13 16 A SER 28 59.26 -166.09 16 A ASN 46 67.00 65.92 16 A GLN 60 -93.38 30.57 16 B LYS 2 -160.36 114.07 16 B ASN 25 -80.24 -78.66 16 B GLN 26 -162.03 50.84 16 B ALA 27 58.09 -126.58 16 B SER 28 63.52 128.32 16 B ASN 46 61.29 63.07 16 B PRO 49 -36.60 125.23 16 B ASN 50 -47.37 99.45 17 A ALA 27 -93.90 -144.19 17 A ASN 46 66.02 69.48 17 A LYS 59 34.22 -104.40 17 A SER 61 66.67 -95.75 17 B LYS 2 59.77 76.60 17 B ASN 25 -122.51 -68.73 17 B ASN 46 76.78 57.32 17 B PRO 49 -33.52 118.64 18 A ALA 27 -102.79 -144.49 18 A ASN 46 60.93 62.51 18 A PRO 49 -65.56 95.55 18 B ASN 25 -77.84 -79.78 18 B GLN 26 -152.79 43.31 18 B ALA 27 52.63 -120.64 18 B SER 28 67.68 133.62 18 B HIS 29 67.83 -61.07 18 B TYR 47 -52.60 106.78 18 B PRO 49 -30.40 115.81 18 B SER 61 -164.91 -52.65 19 A ALA 27 -93.81 -155.32 19 A GLN 60 -98.56 39.48 19 B ASN 25 -125.00 -83.87 19 B HIS 29 69.63 -58.52 19 B VAL 30 -57.58 102.75 19 B PRO 49 -29.71 128.55 19 B ASN 50 -68.52 75.55 19 B LEU 56 -65.97 -70.25 19 B GLN 60 -99.08 57.82 20 A VAL 15 -118.96 -166.48 20 A ALA 27 -65.56 81.32 20 A SER 31 -70.81 -84.05 20 A ALA 32 -168.02 -54.72 20 A ASN 46 63.85 67.01 20 B ASN 25 -146.95 -34.47 20 B SER 28 71.93 179.66 20 B HIS 29 37.92 36.35 20 B PRO 49 -31.61 131.78 20 B ASN 50 -60.36 84.59 20 B LYS 59 64.30 92.66 SOLUTION STRUCTURE OF A DIMER OF LAC REPRESSOR DNA-BINDING DOMAIN COMPLEXED TO ITS NATURAL OPERATOR O1 1 N N 2 N N 3 N N 3 N N A THR 5 C THR 5 HELX_P A GLY 14 C GLY 14 1 1 10 A SER 16 C SER 16 HELX_P A GLN 26 C GLN 26 1 2 11 A SER 31 C SER 31 HELX_P A LEU 45 C LEU 45 1 3 15 A ASN 50 C ASN 50 HELX_P A GLY 58 C GLY 58 1 4 9 B THR 5 D THR 5 HELX_P B GLY 14 D GLY 14 1 5 10 B SER 16 D SER 16 HELX_P B ASN 25 D ASN 25 1 6 10 B SER 31 D SER 31 HELX_P B LEU 45 D LEU 45 1 7 15 B ASN 50 D ASN 50 HELX_P B GLY 58 D GLY 58 1 8 9 disulf 2.031 A CYS 52 C SG CYS 52 1_555 B CYS 52 D SG CYS 52 1_555 hydrog WATSON-CRICK C DG 1 A N1 DG 1 1_555 D DC 23 B N3 DC 23 1_555 hydrog WATSON-CRICK C DG 1 A N2 DG 1 1_555 D DC 23 B O2 DC 23 1_555 hydrog WATSON-CRICK C DG 1 A O6 DG 1 1_555 D DC 23 B N4 DC 23 1_555 hydrog WATSON-CRICK C DA 2 A N1 DA 2 1_555 D DT 22 B N3 DT 22 1_555 hydrog WATSON-CRICK C DA 2 A N6 DA 2 1_555 D DT 22 B O4 DT 22 1_555 hydrog WATSON-CRICK C DA 3 A N1 DA 3 1_555 D DT 21 B N3 DT 21 1_555 hydrog WATSON-CRICK C DA 3 A N6 DA 3 1_555 D DT 21 B O4 DT 21 1_555 hydrog WATSON-CRICK C DT 4 A N3 DT 4 1_555 D DA 20 B N1 DA 20 1_555 hydrog WATSON-CRICK C DT 4 A O4 DT 4 1_555 D DA 20 B N6 DA 20 1_555 hydrog WATSON-CRICK C DT 5 A N3 DT 5 1_555 D DA 19 B N1 DA 19 1_555 hydrog WATSON-CRICK C DT 5 A O4 DT 5 1_555 D DA 19 B N6 DA 19 1_555 hydrog WATSON-CRICK C DG 6 A N1 DG 6 1_555 D DC 18 B N3 DC 18 1_555 hydrog WATSON-CRICK C DG 6 A N2 DG 6 1_555 D DC 18 B O2 DC 18 1_555 hydrog WATSON-CRICK C DG 6 A O6 DG 6 1_555 D DC 18 B N4 DC 18 1_555 hydrog WATSON-CRICK C DT 7 A N3 DT 7 1_555 D DA 17 B N1 DA 17 1_555 hydrog WATSON-CRICK C DT 7 A O4 DT 7 1_555 D DA 17 B N6 DA 17 1_555 hydrog WATSON-CRICK C DG 8 A N1 DG 8 1_555 D DC 16 B N3 DC 16 1_555 hydrog WATSON-CRICK C DG 8 A N2 DG 8 1_555 D DC 16 B O2 DC 16 1_555 hydrog WATSON-CRICK C DG 8 A O6 DG 8 1_555 D DC 16 B N4 DC 16 1_555 hydrog WATSON-CRICK C DA 9 A N1 DA 9 1_555 D DT 15 B N3 DT 15 1_555 hydrog WATSON-CRICK C DA 9 A N6 DA 9 1_555 D DT 15 B O4 DT 15 1_555 hydrog WATSON-CRICK C DG 10 A N1 DG 10 1_555 D DC 14 B N3 DC 14 1_555 hydrog WATSON-CRICK C DG 10 A N2 DG 10 1_555 D DC 14 B O2 DC 14 1_555 hydrog WATSON-CRICK C DG 10 A O6 DG 10 1_555 D DC 14 B N4 DC 14 1_555 hydrog WATSON-CRICK C DC 11 A N3 DC 11 1_555 D DG 13 B N1 DG 13 1_555 hydrog WATSON-CRICK C DC 11 A N4 DC 11 1_555 D DG 13 B O6 DG 13 1_555 hydrog WATSON-CRICK C DC 11 A O2 DC 11 1_555 D DG 13 B N2 DG 13 1_555 hydrog WATSON-CRICK C DG 12 A N1 DG 12 1_555 D DC 12 B N3 DC 12 1_555 hydrog WATSON-CRICK C DG 12 A N2 DG 12 1_555 D DC 12 B O2 DC 12 1_555 hydrog WATSON-CRICK C DG 12 A O6 DG 12 1_555 D DC 12 B N4 DC 12 1_555 hydrog WATSON-CRICK C DG 13 A N1 DG 13 1_555 D DC 11 B N3 DC 11 1_555 hydrog WATSON-CRICK C DG 13 A N2 DG 13 1_555 D DC 11 B O2 DC 11 1_555 hydrog WATSON-CRICK C DG 13 A O6 DG 13 1_555 D DC 11 B N4 DC 11 1_555 hydrog WATSON-CRICK C DA 14 A N1 DA 14 1_555 D DT 10 B N3 DT 10 1_555 hydrog WATSON-CRICK C DA 14 A N6 DA 14 1_555 D DT 10 B O4 DT 10 1_555 hydrog WATSON-CRICK C DT 15 A N3 DT 15 1_555 D DA 9 B N1 DA 9 1_555 hydrog WATSON-CRICK C DT 15 A O4 DT 15 1_555 D DA 9 B N6 DA 9 1_555 hydrog WATSON-CRICK C DA 16 A N1 DA 16 1_555 D DT 8 B N3 DT 8 1_555 hydrog WATSON-CRICK C DA 16 A N6 DA 16 1_555 D DT 8 B O4 DT 8 1_555 hydrog WATSON-CRICK C DA 17 A N1 DA 17 1_555 D DT 7 B N3 DT 7 1_555 hydrog WATSON-CRICK C DA 17 A N6 DA 17 1_555 D DT 7 B O4 DT 7 1_555 hydrog WATSON-CRICK C DC 18 A N3 DC 18 1_555 D DG 6 B N1 DG 6 1_555 hydrog WATSON-CRICK C DC 18 A N4 DC 18 1_555 D DG 6 B O6 DG 6 1_555 hydrog WATSON-CRICK C DC 18 A O2 DC 18 1_555 D DG 6 B N2 DG 6 1_555 hydrog WATSON-CRICK C DA 19 A N1 DA 19 1_555 D DT 5 B N3 DT 5 1_555 hydrog WATSON-CRICK C DA 19 A N6 DA 19 1_555 D DT 5 B O4 DT 5 1_555 hydrog WATSON-CRICK C DA 20 A N1 DA 20 1_555 D DT 4 B N3 DT 4 1_555 hydrog WATSON-CRICK C DA 20 A N6 DA 20 1_555 D DT 4 B O4 DT 4 1_555 hydrog WATSON-CRICK C DT 21 A N3 DT 21 1_555 D DA 3 B N1 DA 3 1_555 hydrog WATSON-CRICK C DT 21 A O4 DT 21 1_555 D DA 3 B N6 DA 3 1_555 hydrog WATSON-CRICK C DT 22 A N3 DT 22 1_555 D DA 2 B N1 DA 2 1_555 hydrog WATSON-CRICK C DT 22 A O4 DT 22 1_555 D DA 2 B N6 DA 2 1_555 hydrog WATSON-CRICK C DT 23 A N3 DT 23 1_555 D DA 1 B N1 DA 1 1_555 hydrog WATSON-CRICK C DT 23 A O4 DT 23 1_555 D DA 1 B N6 DA 1 1_555 TRANSCRIPTION REGULATOR/DNA TRANSCRIPTION REGULATION, LAC OPERON, LAC REPRESSOR, NATURAL LAC OPERATOR, ASYMMETRIC DNA-BINDING, HTH, TRANSCRIPTION REGULATOR-DNA COMPLEX LACI_ECOLI UNP 3 1 P03023 MKPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNRVAQQLAGKQSLLIGVATSSLALHAPSQIV AAIKSRADQLGASVVVSMVERSGVEACKAAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVSDQTPINSII FSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGWHKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPT AMLVANDQMALGAMRAITESGLRVGADISVVGYDDTEDSSCYIPPSTTIKQDFRLLGQTSVDRLLQLSQGQAVKGNQLLP VSLVKRKTTLAPNTQTASPRALADSLMQLARQVSRLESGQ 1L1M PDB 1 1L1M 1L1M PDB 2 1L1M 1 62 1L1M 1 62 P03023 A 1 1 62 1 62 1L1M 1 62 P03023 B 1 1 62 1 23 1L1M 1 23 1L1M C 2 1 23 1 23 1L1M 1 23 1L1M D 3 1 23 1 VAL engineered mutation CYS 52 1L1M A P03023 UNP 52 52 2 VAL engineered mutation CYS 52 1L1M B P03023 UNP 52 52