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protein dna_rna ligands Protein-protein interface(s) links
Transcription/DNA PDB id
1tro
Jmol
Contents
Protein chains
104 a.a. *
99 a.a. *
DNA/RNA
Ligands
TRP ×4
Waters ×572
* Residue conservation analysis
PDB id:
1tro
Name: Transcription/DNA
Title: Crystal structure of trp repressor operator complex at atomi resolution
Structure: DNA (5'- d( Tp Gp Tp Ap Cp Tp Ap Gp Tp Tp Ap Ap Cp Tp Ap Gp T p Ap C chain: i, j, k, l. Engineered: yes. Protein (trp repressor). Chain: a, c, e, g
Source: Synthetic: yes. Escherichia coli str. K12 substr.. Organism_taxid: 316407. Strain: w3110
Biol. unit: Tetramer (from PQS)
Resolution:
1.90Å     R-factor:   0.167    
Authors: Z.Otwinowski,R.W.Schevitz,R.-G.Zhang,C.L.Lawson,A.J.Joachimi R.Marmorstein,B.F.Luisi,P.B.Sigler
Key ref: Z.Otwinowski et al. (1988). Crystal structure of trp repressor/operator complex at atomic resolution. Nature, 335, 321-329. PubMed id: 3419502 DOI: 10.1038/335321a0
Date:
30-Aug-92     Release date:   31-Jan-94    
PROCHECK
Go to PROCHECK summary
 Headers
 References

Protein chains
Pfam   ArchSchema ?
P0A881  (TRPR_ECOLI) -  Trp operon repressor
Seq:
Struc:
108 a.a.
104 a.a.*
Protein chains
Pfam   ArchSchema ?
P0A881  (TRPR_ECOLI) -  Trp operon repressor
Seq:
Struc:
108 a.a.
99 a.a.*
Key:    PfamA domain  Secondary structure  CATH domain
* PDB and UniProt seqs differ at 2 residue positions (black crosses)

 Gene Ontology (GO) functional annotation 
  GO annot!
  Cellular component     intracellular   2 terms 
  Biological process     transcription, DNA-dependent   2 terms 
  Biochemical function     DNA binding     3 terms  

 

 
DOI no: 10.1038/335321a0 Nature 335:321-329 (1988)
PubMed id: 3419502  
 
 
Crystal structure of trp repressor/operator complex at atomic resolution.
Z.Otwinowski, R.W.Schevitz, R.G.Zhang, C.L.Lawson, A.Joachimiak, R.Q.Marmorstein, B.F.Luisi, P.B.Sigler.
 
  ABSTRACT  
 
The crystal structure of the trp repressor/operator complex shows an extensive contact surface, including 24 direct and 6 solvent-mediated hydrogen bonds to the phosphate groups of the DNA. There are no direct hydrogen bonds or non-polar contacts to the bases that can explain the repressor's specificity for the operator sequence. Rather, the sequence seems to be recognized indirectly through its effects on the geometry of the phosphate backbone, which in turn permits the formation of a stable interface. Water-mediated polar contacts to the bases also appear to contribute part of the specificity.
 

Literature references that cite this PDB file's key reference

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RNA-binding proteins: TRAPping RNA bases.
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10388766 A.Pichler, S.Rüdisser, M.Mitterböck, C.G.Huber, R.H.Winger, K.R.Liedl, A.Hallbrucker, and E.Mayer (1999).
Unexpected BII conformer substate population in unoriented hydrated films of the d(CGCGAATTCGCG)2 dodecamer and of native B-DNA from salmon testes.
  Biophys J, 77, 398-409.  
10410794 C.Wolberger (1999).
Multiprotein-DNA complexes in transcriptional regulation.
  Annu Rev Biophys Biomol Struct, 28, 29-56.  
  10074170 F.M.van den Ent, A.Vos, and R.H.Plasterk (1999).
Dissecting the role of the N-terminal domain of human immunodeficiency virus integrase by trans-complementation analysis.
  J Virol, 73, 3176-3183.  
10329775 G.Savitha, and M.A.Viswamitra (1999).
An A-DNA structure with two independent duplexes in the asymmetric unit.
  Acta Crystallogr D Biol Crystallogr, 55, 1136-1143.
PDB code: 414d
  10647173 J.Janin (1999).
Wet and dry interfaces: the role of solvent in protein-protein and protein-DNA recognition.
  Structure, 7, R277-R279.  
10026283 K.Nadassy, S.J.Wodak, and J.Janin (1999).
Structural features of protein-nucleic acid recognition sites.
  Biochemistry, 38, 1999-2017.  
10518785 M.Jeeves, P.D.Evans, R.A.Parslow, M.Jaseja, and E.I.Hyde (1999).
Studies of the Escherichia coli Trp repressor binding to its five operators and to variant operator sequences.
  Eur J Biochem, 265, 919-928.  
  10322039 M.N.Alekshun, and S.B.Levy (1999).
Characterization of MarR superrepressor mutants.
  J Bacteriol, 181, 3303-3306.  
  10386877 M.P.Brown, A.O.Grillo, M.Boyer, and C.A.Royer (1999).
Probing the role of water in the tryptophan repressor-operator complex.
  Protein Sci, 8, 1276-1285.  
9988771 M.Reuter, J.Schneider-Mergener, D.Kupper, A.Meisel, P.Mackeldanz, D.H.Krüger, and C.Schroeder (1999).
Regions of endonuclease EcoRII involved in DNA target recognition identified by membrane-bound peptide repertoires.
  J Biol Chem, 274, 5213-5221.  
10446123 M.Soler-López, L.Malinina, J.Liu, T.Huynh-Dinh, and J.A.Subirana (1999).
Water and ions in a high resolution structure of B-DNA.
  J Biol Chem, 274, 23683-23686.
PDB code: 475d
10570130 O.Littlefield, Y.Korkhin, and P.B.Sigler (1999).
The structural basis for the oriented assembly of a TBP/TFB/promoter complex.
  Proc Natl Acad Sci U S A, 96, 13668-13673.
PDB code: 1d3u
10079770 R.Gurlie, T.H.Duong, and K.Zakrzewska (1999).
The role of DNA-protein salt bridges in molecular recognition: a model study.
  Biopolymers, 49, 313-327.  
10562565 S.Eiler, A.Dock-Bregeon, L.Moulinier, J.C.Thierry, and D.Moras (1999).
Synthesis of aspartyl-tRNA(Asp) in Escherichia coli--a snapshot of the second step.
  EMBO J, 18, 6532-6541.
PDB code: 1c0a
10512803 S.Sen, and L.Nilsson (1999).
Structure, interaction, dynamics and solvent effects on the DNA-EcoRI complex in aqueous solution from molecular dynamics simulation.
  Biophys J, 77, 1782-1800.  
10479730 T.V.Chalikian, J.Völker, A.R.Srinivasan, W.K.Olson, and K.J.Breslauer (1999).
The hydration of nucleic acid duplexes as assessed by a combination of volumetric and structural techniques.
  Biopolymers, 50, 459-471.  
10090749 T.Wang, M.Balakrishnan, and C.B.Jonsson (1999).
Major and minor groove contacts in retroviral integrase-LTR interactions.
  Biochemistry, 38, 3624-3632.  
9564052 C.Mayer-Jung, D.Moras, and Y.Timsit (1998).
Hydration and recognition of methylated CpG steps in DNA.
  EMBO J, 17, 2709-2718.
PDB codes: 382d 383d 384d
9482860 C.R.Robinson, and S.G.Sligar (1998).
Changes in solvation during DNA binding and cleavage are critical to altered specificity of the EcoRI endonuclease.
  Proc Natl Acad Sci U S A, 95, 2186-2191.  
9843415 D.J.King, D.A.Ventura, A.R.Brasier, and D.G.Gorenstein (1998).
Novel combinatorial selection of phosphorothioate oligonucleotide aptamers.
  Biochemistry, 37, 16489-16493.  
10384273 D.Reinberg, G.Orphanides, R.Ebright, S.Akoulitchev, J.Carcamo, H.Cho, P.Cortes, R.Drapkin, O.Flores, I.Ha, J.A.Inostroza, S.Kim, T.K.Kim, P.Kumar, T.Lagrange, G.LeRoy, H.Lu, D.M.Ma, E.Maldonado, A.Merino, F.Mermelstein, I.Olave, M.Sheldon, R.Shiekhattar, and L.Zawel (1998).
The RNA polymerase II general transcription factors: past, present, and future.
  Cold Spring Harb Symp Quant Biol, 63, 83.  
9788911 J.Woda, B.Schneider, K.Patel, K.Mistry, and H.M.Berman (1998).
An analysis of the relationship between hydration and protein-DNA interactions.
  Biophys J, 75, 2170-2177.  
9591674 L.Malinina, V.Tereshko, E.Ivanova, J.A.Subirana, V.Zarytova, and Y.Nekrasov (1998).
Structural variability and new intermolecular interactions of Z-DNA in crystals of d(pCpGpCpGpCpG).
  Biophys J, 74, 2482-2490.
PDB codes: 390d 391d 392d
9628859 M.A.Schumacher, D.Carter, D.M.Scott, D.S.Roos, B.Ullman, and R.G.Brennan (1998).
Crystal structures of Toxoplasma gondii uracil phosphoribosyltransferase reveal the atomic basis of pyrimidine discrimination and prodrug binding.
  EMBO J, 17, 3219-3232.
PDB codes: 1bd3 1bd4 1upf 1upu
  9817850 M.Feig, and B.M.Pettitt (1998).
Crystallographic water sites from a theoretical perspective.
  Structure, 6, 1351-1354.  
  9655343 N.Potier, L.J.Donald, I.Chernushevich, A.Ayed, W.Ens, C.H.Arrowsmith, K.G.Standing, and H.W.Duckworth (1998).
Study of a noncovalent trp repressor: DNA operator complex by electrospray ionization time-of-flight mass spectrometry.
  Protein Sci, 7, 1388-1395.  
  9792092 P.C.Sanschagrin, and L.A.Kuhn (1998).
Cluster analysis of consensus water sites in thrombin and trypsin shows conservation between serine proteases and contributions to ligand specificity.
  Protein Sci, 7, 2054-2064.  
9518483 R.E.Dickerson (1998).
DNA bending: the prevalence of kinkiness and the virtues of normality.
  Nucleic Acids Res, 26, 1906-1926.  
9570398 S.G.Mackintosh, P.F.McDermott, and B.K.Hurlburt (1998).
Mutational analysis of the NH2-terminal arms of the trp repressor indicates a multifunctional domain.
  Mol Microbiol, 27, 1119-1127.  
9928479 S.Karlin, A.M.Campbell, and J.Mrázek (1998).
Comparative DNA analysis across diverse genomes.
  Annu Rev Genet, 32, 185-225.  
9493396 S.Neidle, and C.M.Nunn (1998).
Crystal structures of nucleic acids and their drug complexes.
  Nat Prod Rep, 15, 1.  
  9420329 T.Lagrange, A.N.Kapanidis, H.Tang, D.Reinberg, and R.H.Ebright (1998).
New core promoter element in RNA polymerase II-dependent transcription: sequence-specific DNA binding by transcription factor IIB.
  Genes Dev, 12, 34-44.  
  9562563 V.L.Rath, L.F.Silvian, B.Beijer, B.S.Sproat, and T.A.Steitz (1998).
How glutaminyl-tRNA synthetase selects glutamine.
  Structure, 6, 439-449.
PDB code: 1qtq
9736707 W.K.Olson, A.A.Gorin, X.J.Lu, L.M.Hock, and V.B.Zhurkin (1998).
DNA sequence-dependent deformability deduced from protein-DNA crystal complexes.
  Proc Natl Acad Sci U S A, 95, 11163-11168.  
9731772 Y.G.Gao, S.Y.Su, H.Robinson, S.Padmanabhan, L.Lim, B.S.McCrary, S.P.Edmondson, J.W.Shriver, and A.H.Wang (1998).
The crystal structure of the hyperthermophile chromosomal protein Sso7d bound to DNA.
  Nat Struct Biol, 5, 782-786.
PDB codes: 1bf4 1bnz
9210460 A.Pingoud, and A.Jeltsch (1997).
Recognition and cleavage of DNA by type-II restriction endonucleases.
  Eur J Biochem, 246, 1.  
9016600 A.V.Kralicek, P.K.Wilson, G.B.Ralston, R.G.Wake, and G.F.King (1997).
Reorganization of terminator DNA upon binding replication terminator protein: implications for the functional replication fork arrest complex.
  Nucleic Acids Res, 25, 590-596.  
9241431 C.Chothia, T.Hubbard, S.Brenner, H.Barns, and A.Murzin (1997).
Protein folds in the all-beta and all-alpha classes.
  Annu Rev Biophys Biomol Struct, 26, 597-627.  
  9345851 G.Capranico, M.Binaschi, M.E.Borgnetto, F.Zunino, and M.Palumbo (1997).
A protein-mediated mechanism for the DNA sequence-specific action of topoisomerase II poisons.
  Trends Pharmacol Sci, 18, 323-329.  
9284320 G.F.Bonifacio, T.Brown, G.L.Conn, and A.N.Lane (1997).
Comparison of the electrophoretic and hydrodynamic properties of DNA and RNA oligonucleotide duplexes.
  Biophys J, 73, 1532-1538.  
9241421 G.Patikoglou, and S.K.Burley (1997).
Eukaryotic transcription factor-DNA complexes.
  Annu Rev Biophys Biomol Struct, 26, 289-325.  
9154913 H.Backes, C.Berens, V.Helbl, S.Walter, F.X.Schmid, and W.Hillen (1997).
Combinations of the alpha-helix-turn-alpha-helix motif of TetR with respective residues from LacI or 434Cro: DNA recognition, inducer binding, and urea-dependent denaturation.
  Biochemistry, 36, 5311-5322.  
9097732 H.M.Berman (1997).
Crystal studies of B-DNA: the answers and the questions.
  Biopolymers, 44, 23-44.  
9154911 H.N.Moseley, W.Lee, C.H.Arrowsmith, and N.R.Krishna (1997).
Quantitative determination of conformational, dynamic, and kinetic parameters of a ligand-protein/DNA complex from a complete relaxation and conformational exchange matrix analysis of intermolecular transferred NOESY.
  Biochemistry, 36, 5293-5299.  
9199797 J.A.Subirana, and T.Faria (1997).
Influence of sequence on the conformation of the B-DNA helix.
  Biophys J, 73, 333-338.  
9360602 J.Liu, P.A.Lynch, C.Y.Chien, G.T.Montelione, R.M.Krug, and H.M.Berman (1997).
Crystal structure of the unique RNA-binding domain of the influenza virus NS1 protein.
  Nat Struct Biol, 4, 896-899.
PDB code: 1ail
9343361 J.Pérez-Martín, and V.de Lorenzo (1997).
Clues and consequences of DNA bending in transcription.
  Annu Rev Microbiol, 51, 593-628.  
9032063 J.W.Schwabe (1997).
The role of water in protein-DNA interactions.
  Curr Opin Struct Biol, 7, 126-134.  
9354759 L.Jen-Jacobson (1997).
Protein-DNA recognition complexes: conservation of structure and binding energy in the transition state.
  Biopolymers, 44, 153-180.  
9188697 L.Li, and K.S.Matthews (1997).
Differences in water release with DNA binding by ultrabithorax and deformed homeodomains.
  Biochemistry, 36, 7003-7011.  
9032054 M.A.Kercher, P.Lu, and M.Lewis (1997).
Lac repressor-operator complex.
  Curr Opin Struct Biol, 7, 76-85.  
9228950 M.Cai, R.Zheng, M.Caffrey, R.Craigie, G.M.Clore, and A.M.Gronenborn (1997).
Solution structure of the N-terminal zinc binding domain of HIV-1 integrase.
  Nat Struct Biol, 4, 567-577.
PDB codes: 1wja 1wjb 1wjc 1wjd
9203330 M.Kavanoor, and M.R.Eftink (1997).
Characterization of the role of side-chain interactions in the binding of ligands to apo trp repressor: pH dependence studies.
  Biophys Chem, 66, 43-55.  
9218422 M.Oda, K.Furukawa, K.Ogata, A.Sarai, S.Ishii, Y.Nishimura, and H.Nakamura (1997).
Investigation of the pyrimidine preference by the c-Myb DNA-binding domain at the initial base of the consensus sequence.
  J Biol Chem, 272, 17966-17971.  
9251783 N.Pastor, L.Pardo, and H.Weinstein (1997).
Does TATA matter? A structural exploration of the selectivity determinants in its complexes with TATA box-binding protein.
  Biophys J, 73, 640-652.  
9782776 R.E.Dickerson, and T.K.Chiu (1997).
Helix bending as a factor in protein/DNA recognition.
  Biopolymers, 44, 361-403.  
9166775 S.A.Smith, and L.W.McLaughlin (1997).
Probing contacts to the DNA backbone in the trp repressor-operator sequence-specific protein-nucleic acid complex using diastereomeric methylphosphonate analogues.
  Biochemistry, 36, 6046-6058.  
  9190805 S.Karlin, J.Mrázek, and A.M.Campbell (1997).
Compositional biases of bacterial genomes and evolutionary implications.
  J Bacteriol, 179, 3899-3913.  
8676876 C.Günes, and B.Müller-Hill (1996).
Mutants in position 69 of the Trp repressor of Escherichia coli K12 with altered DNA-binding specificity.
  Mol Gen Genet, 251, 338-346.  
8733235 C.Günes, D.Staacke, B.von Wilcken-Bergmann, and B.Müller-Hill (1996).
Co-operative binding of two Trp repressor dimers to alpha- or beta-centred trp operators.
  Mol Microbiol, 20, 375-384.  
  8897612 C.J.Morton, and J.E.Ladbury (1996).
Water-mediated protein-DNA interactions: the relationship of thermodynamics to structural detail.
  Protein Sci, 5, 2115-2118.  
  8897613 C.R.Robinson, and S.G.Sligar (1996).
Participation of water in Hin recombinase--DNA recognition.
  Protein Sci, 5, 2119-2124.  
8621416 C.Wenz, A.Jeltsch, and A.Pingoud (1996).
Probing the indirect readout of the restriction enzyme EcoRV. Mutational analysis of contacts to the DNA backbone.
  J Biol Chem, 271, 5565-5573.  
8621526 H.Thorogood, J.A.Grasby, and B.A.Connolly (1996).
Influence of the phosphate backbone on the recognition and hydrolysis of DNA by the EcoRV restriction endonuclease. A study using oligodeoxynucleotide phosphorothioates.
  J Biol Chem, 271, 8855-8862.  
8679635 H.Thorogood, T.R.Waters, A.W.Parker, C.W.Wharton, and B.A.Connolly (1996).
Resonance Raman spectroscopy of 4-thiothymidine and oligodeoxynucleotides containing this base both free in solution and bound to the restriction endonuclease EcoRV.
  Biochemistry, 35, 8723-8733.  
8599757 L.Urpí, V.Tereshko, L.Malinina, T.Huynh-Dinh, and J.A.Subirana (1996).
Structural comparison between the d(CTAG) sequence in oligonucleotides and trp and met repressor-operator complexes.
  Nat Struct Biol, 3, 325-328.
PDB codes: 249d 250d
  8762153 M.R.Gryk, O.Jardetzky, L.S.Klig, and C.Yanofsky (1996).
Flexibility of DNA binding domain of trp repressor required for recognition of different operator sequences.
  Protein Sci, 5, 1195-1197.  
8605632 N.C.Strynadka, S.E.Jensen, P.M.Alzari, and M.N.James (1996).
A potent new mode of beta-lactamase inhibition revealed by the 1.7 A X-ray crystallographic structure of the TEM-1-BLIP complex.
  Nat Struct Biol, 3, 290-297.  
8901570 N.Y.Sidorova, and D.C.Rau (1996).
Differences in water release for the binding of EcoRI to specific and nonspecific DNA sequences.
  Proc Natl Acad Sci U S A, 93, 12272-12277.  
9022683 P.D.Evans, M.Jaseja, M.Jeeves, and E.I.Hyde (1996).
NMR studies of the Escherichia coli Trp repressor.trpRs operator complex.
  Eur J Biochem, 242, 567-575.  
8672714 P.H.von Hippel, W.A.Rees, K.Rippe, and K.S.Wilson (1996).
Specificity mechanisms in the control of transcription.
  Biophys Chem, 59, 231-246.  
  8668149 P.Shore, A.J.Whitmarsh, R.Bhaskaran, R.J.Davis, J.P.Waltho, and A.D.Sharrocks (1996).
Determinants of DNA-binding specificity of ETS-domain transcription factors.
  Mol Cell Biol, 16, 3338-3349.  
  8626318 R.Hilse, S.Hammerschmidt, W.Bautsch, and M.Frosch (1996).
Site-specific insertion of IS1301 and distribution in Neisseria meningitidis strains.
  J Bacteriol, 178, 2527-2532.  
8557624 S.Cal, and B.A.Connolly (1996).
The EcoRV modification methylase causes considerable bending of DNA upon binding to its recognition sequence GATATC.
  J Biol Chem, 271, 1008-1015.  
17029807 T.Härd, and T.Lundbäck (1996).
Thermodynamics of sequence-specific protein-DNA interactions.
  Biophys Chem, 62, 121-139.  
8654432 V.Ramesh, S.E.Syed, R.O.Frederick, M.J.Sutcliffe, M.Barnes, and G.C.Roberts (1996).
NMR studies of the mode of binding of corepressors and inducers to Escherichia coli trp repressor.
  Eur J Biochem, 235, 804-813.  
8794738 V.Tereshko, L.Urpí, L.Malinina, T.Huynh-Dinh, and J.A.Subirana (1996).
Structure of the B-DNA oligomers d(CGCTAGCG) and d(CGCTCTAGAGCG) in new crystal forms.
  Biochemistry, 35, 11589-11595.  
7862089 C.GüneÅŸ, D.Staacke, B.von Wilcken-Bergmann, and B.Müller-Hill (1995).
The possible roles of residues 79 and 80 of the Trp repressor from Escherichia coli K-12 in trp operator recognition.
  Mol Gen Genet, 246, 180-195.  
7724581 C.R.Robinson, and S.G.Sligar (1995).
Heterogeneity in molecular recognition by restriction endonucleases: osmotic and hydrostatic pressure effects on BamHI, Pvu II, and EcoRV specificity.
  Proc Natl Acad Sci U S A, 92, 3444-3448.  
8789192 C.S.Poornima, and P.M.Dean (1995).
Hydration in drug design. 1. Multiple hydrogen-bonding features of water molecules in mediating protein-ligand interactions.
  J Comput Aided Mol Des, 9, 500-512.  
7671301 D.S.Wilson, B.Guenther, C.Desplan, and J.Kuriyan (1995).
High resolution crystal structure of a paired (Pax) class cooperative homeodomain dimer on DNA.
  Cell, 82, 709-719.
PDB code: 1fjl
  7613470 E.H.Morita, M.Shirakawa, F.Hayashi, M.Imagawa, and Y.Kyogoku (1995).
Structure of the Oct-3 POU-homeodomain in solution, as determined by triple resonance heteronuclear multidimensional NMR spectroscopy.
  Protein Sci, 4, 729-739.
PDB code: 1ocp
  7613864 G.A.Leonard, S.Zhang, M.R.Peterson, S.J.Harrop, J.R.Helliwell, W.B.Cruse, B.L.d'Estaintot, O.Kennard, T.Brown, and W.N.Hunter (1995).
Self-association of a DNA loop creates a quadruplex: crystal structure of d(GCATGCT) at 1.8 A resolution.
  Structure, 3, 335-340.
PDB code: 184d
7501474 I.Berger, L.Su, J.R.Spitzner, C.Kang, T.G.Burke, and A.Rich (1995).
Molecular structure of the halogenated anti-cancer drug iododoxorubicin complexed with d(TGTACA) and d(CGATCG).
  Nucleic Acids Res, 23, 4488-4494.
PDB codes: 1imr 1ims
7862523 I.D.Parsons, B.Persson, A.Mekhalfia, G.M.Blackburn, and P.G.Stockley (1995).
Probing the molecular mechanism of action of co-repressor in the E. coli methionine repressor-operator complex using surface plasmon resonance (SPR).
  Nucleic Acids Res, 23, 211-216.  
  7795518 J.J.Perona, and C.S.Craik (1995).
Structural basis of substrate specificity in the serine proteases.
  Protein Sci, 4, 337-360.
PDB code: 1amh
7716167 J.Janin (1995).
Elusive affinities.
  Proteins, 21, 30-39.  
  7773178 L.Shimoni, and J.P.Glusker (1995).
Hydrogen bonding motifs of protein side chains: descriptions of binding of arginine and amide groups.
  Protein Sci, 4, 65-74.  
7696496 M.A.Eriksson, T.Härd, and L.Nilsson (1995).
Molecular dynamics simulations of the glucocorticoid receptor DNA-binding domain in complex with DNA and free in solution.
  Biophys J, 68, 402-426.  
7553867 M.A.Schumacher, K.Y.Choi, F.Lu, H.Zalkin, and R.G.Brennan (1995).
Mechanism of corepressor-mediated specific DNA binding by the purine repressor.
  Cell, 83, 147-155.
PDB code: 1dbq
7647248 M.A.Young, G.Ravishanker, D.L.Beveridge, and H.M.Berman (1995).
Analysis of local helix bending in crystal structures of DNA oligonucleotides and DNA-protein complexes.
  Biophys J, 68, 2454-2468.  
8530394 M.Dlakic, and R.E.Harrington (1995).
Bending and torsional flexibility of G/C-rich sequences as determined by cyclization assays.
  J Biol Chem, 270, 29945-29952.  
  7720716 M.M.Garner, and D.C.Rau (1995).
Water release associated with specific binding of gal repressor.
  EMBO J, 14, 1257-1263.  
8749848 M.Suzuki, and M.Gerstein (1995).
Binding geometry of alpha-helices that recognize DNA.
  Proteins, 23, 525-535.  
7610037 M.Suzuki, and N.Yagi (1995).
Stereochemical basis of DNA bending by transcription factors.
  Nucleic Acids Res, 23, 2083-2091.  
7568230 N.Schiering, X.Tao, H.Zeng, J.R.Murphy, G.A.Petsko, and D.Ringe (1995).
Structures of the apo- and the metal ion-activated forms of the diphtheria tox repressor from Corynebacterium diphtheriae.
  Proc Natl Acad Sci U S A, 92, 9843-9850.
PDB code: 1dpr
  7743135 X.Qiu, C.L.Verlinde, S.Zhang, M.P.Schmitt, R.K.Holmes, and W.G.Hol (1995).
Three-dimensional structure of the diphtheria toxin repressor in complex with divalent cation co-repressors.
  Structure, 3, 87.
PDB code: 1dtr
7624323 X.Tao, H.Y.Zeng, and J.R.Murphy (1995).
Transition metal ion activation of DNA binding by the diphtheria tox repressor requires the formation of stable homodimers.
  Proc Natl Acad Sci U S A, 92, 6803-6807.  
  8313881 A.Joachimiak, T.E.Haran, and P.B.Sigler (1994).
Mutagenesis supports water mediated recognition in the trp repressor-operator system.
  EMBO J, 13, 367-372.  
8197169 A.K.Benson, G.Ramakrishnan, N.Ohta, J.Feng, A.J.Ninfa, and A.Newton (1994).
The Caulobacter crescentus FlbD protein acts at ftr sequence elements both to activate and to repress transcription of cell cycle-regulated flagellar genes.
  Proc Natl Acad Sci U S A, 91, 4989-4993.  
  8003972 C.L.Borders, J.A.Broadwater, P.A.Bekeny, J.E.Salmon, A.S.Lee, A.M.Eldridge, and V.B.Pett (1994).
A structural role for arginine in proteins: multiple hydrogen bonds to backbone carbonyl oxygens.
  Protein Sci, 3, 541-548.  
8065254 C.Q.Pan, R.Landgraf, and D.S.Sigman (1994).
DNA-binding proteins as site-specific nucleases.
  Mol Microbiol, 12, 335-342.  
  9383382 D.J.Austin, G.R.Crabtree, and S.L.Schreiber (1994).
Proximity versus allostery: the role of regulated protein dimerization in biology.
  Chem Biol, 1, 131-136.  
8208606 D.N.Arvidson, C.G.Arvidson, C.L.Lawson, J.Miner, C.Adams, and P.Youderian (1994).
The tryptophan repressor sequence is highly conserved among the Enterobacteriaceae.
  Nucleic Acids Res, 22, 1821-1829.  
8036152 E.Liepinsh, W.Leupin, and G.Otting (1994).
Hydration of DNA in aqueous solution: NMR evidence for a kinetic destabilization of the minor groove hydration of d-(TTAA)2 versus d-(AATT)2 segments.
  Nucleic Acids Res, 22, 2249-2254.  
  8081746 G.M.Clore, A.Bax, J.G.Omichinski, and A.M.Gronenborn (1994).
Localization of bound water in the solution structure of a complex of the erythroid transcription factor GATA-1 with DNA.
  Structure, 2, 89-94.  
  7987223 J.Guenot, R.J.Fletterick, and P.A.Kollman (1994).
A negative electrostatic determinant mediates the association between the Escherichia coli trp repressor and its operator DNA.
  Protein Sci, 3, 1276-1285.  
7854115 J.Pfau, D.N.Arvidson, and P.Youderian (1994).
Mutants of Escherichia coli Trp repressor with changes of conserved, helix-turn-helix residue threonine 81 have altered DNA-binding specificities.
  Mol Microbiol, 13, 1001-1012.  
8038388 K.S.Martin, C.A.Royer, K.P.Howard, J.Carey, Y.C.Liu, K.Matthews, E.Heyduk, and J.C.Lee (1994).
Electrostatic forces contribute to interactions between trp repressor dimers.
  Biophys J, 66, 1167-1173.  
8041727 L.Nekludova, and C.O.Pabo (1994).
Distinctive DNA conformation with enlarged major groove is found in Zn-finger-DNA and other protein-DNA complexes.
  Proc Natl Acad Sci U S A, 91, 6948-6952.  
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Importance of a flanking AT-rich region in target site recognition by the GC box-binding zinc finger protein MIG1.
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A framework for the DNA-protein recognition code of the probe helix in transcription factors: the chemical and stereochemical rules.
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8029016 N.O.Reich, and K.R.Sweetnam (1994).
Sequence-dependent effects on DNA stability resulting from guanosine replacements by inosine.
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7656003 P.B.Sigler (1994).
Chemogenetics.
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Osmotic regulation of gene action.
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Solution structure of the LexA repressor DNA binding domain determined by 1H NMR spectroscopy.
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PDB codes: 1lea 1leb
7656001 S.A.Smith, S.B.Rajur, and L.W.McLaughlin (1994).
Specific purine N7-nitrogens are critical for high affinity binding by the trp repressor.
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Plus ça change, plus c'est la même chose.
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8293469 S.Klimasauskas, S.Kumar, R.J.Roberts, and X.Cheng (1994).
HhaI methyltransferase flips its target base out of the DNA helix.
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PDB code: 1mht
  7987224 T.Liu, E.F.DeRose, and G.P.Mullen (1994).
Determination of the structure of the DNA binding domain of gamma delta resolvase in solution.
  Protein Sci, 3, 1286-1295.
PDB codes: 1res 1ret
7957174 V.Ramesh, R.O.Frederick, S.E.Syed, C.F.Gibson, J.C.Yang, and G.C.Roberts (1994).
The interactions of Escherichia coli trp repressor with tryptophan and with an operator oligonucleotide. NMR studies using selectively 15N-labelled protein.
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Homeodomain-DNA recognition.
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The arginine repressor of Escherichia coli.
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The Met repressor-operator complex: DNA recognition by beta-strands.
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Broad binding-site specificity and affinity properties of octamer 1 and brain octamer-binding proteins.
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A Simple genetically structured model of trp repressor-operator interactions.
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8265659 C.Y.King, and M.A.Weiss (1993).
The SRY high-mobility-group box recognizes DNA by partial intercalation in the minor groove: a topological mechanism of sequence specificity.
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Analysis of trp repressor-DNA interactions using gel electrophoresis.
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