Altered Specificity in DNA Binding by the lac Repressor: A Mutant lac Headpiece that Mimics the gal Repressor
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Summary
Structural data show that, while most of the anchoring points that help the lac headpiece to assemble on the lac operator were preserved, a different network of protein–DNA interactions connecting Ala17 and Val18 to bases in the DNA major groove drives the specificity towards the altered operator.
- Type
- article
- Published
- 2005-09-05
- Cited by
- 20
- References
- 63
- Access
- Open access
- OpenAlex
- https://openalex.org/W2070362624
- Semantic Scholar
- https://api.semanticscholar.org/CorpusID:22505200
Keywords
Lac repressor, Repressor, lac operon, Mutant, Operator (biology)
References
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- Mutant lac repressors with new specificities hint at rules for protein‐‐DNA recognition.
- Genetic studies of the lac repressor. XIII. Extensive amino acid replacements generated by the use of natural and synthetic nonsense suppressors.
- The helix-turn-helix DNA binding motif.
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- Experimental and theoretical determination of nucleic acid magnetic susceptibility: importance for the study of dynamics by field-induced residual dipolar couplings.
- Thermodynamics of the interactions of lac repressor with variants of the symmetric lac operator: effects of converting a consensus site to a non-specific site.
- Cloning of the lacI gene into A ColE1 plasmid.
- Use of dipolar 1H–15N and 1H–13C couplings in the structure determination of magnetically oriented macromolecules in solution
- Validation of Protein Structure from Anisotropic Carbonyl Chemical Shifts in a Dilute Liquid Crystalline Phase
- Formation of the hinge helix in the lac represser is induced upon binding to the lac operator
- Crystallography & NMR system: A new software suite for macromolecular structure determination.
- MOLMOL: a program for display and analysis of macromolecular structures.
- The NMR Structure of a DNA Dodecamer in an Aqueous Dilute Liquid Crystalline Phase
- Recognition helices of lac and lambda repressor are oriented in opposite directions and recognize similar DNA sequences.
Cited by
- The natural DNA bending angle in the lac repressor headpiece-O1 operator complex is determined by protein-DNA contacts and water release.
- Fitness landscapes of gene regulation in variable environments
- The lac Operon: Fluctuations, Growth and Evolution
- The structure of the XPF-ssDNA complex underscores the distinct roles of the XPF and ERCC1 helix- hairpin-helix domains in ss/ds DNA recognition.
- The HhH domain of the human DNA repair protein XPF forms stable homodimers
- Local Gene Regulation Details a Recognition Code within the LacI Transcriptional Factor Family
- Functional rules for lac repressor–operator associations and implications for protein–DNA interactions
- Combinatorial targeting of ribbon–helix–helix artificial transcription factors to chimeric recognition sites
- Empirical fitness landscapes reveal accessible evolutionary paths
- Develop reusable and combinable designs for transcriptional logic gates
- Information-driven protein–DNA docking using HADDOCK: it is a matter of flexibility
- Insights into the DNA cleavage mechanism of human LINE‐1 retrotransposon endonuclease
- Switching DNA-binding specificity by unnatural amino acid substitution
- Using evolutionary information to find specificity-determining and co-evolving residues.
- Structural characterization of meningococcal vaccine antigen NadA and of its transcriptional regulator NadR in ligand-bound and free forms.
- The cost of evolved constitutive lac gene expression is usually, but not always, maintained during evolution of generalist populations
- Alignment of major-groove hydrogen bond arrays uncovers shared information between different DNA sequences that bind the same protein
- Identification of critical amino acids in the DNA binding domain of LuxO: Lessons from a constitutive active LuxO
- Local Gene Regulation Details a Recognition Code for the LacI Transcriptional Factor Family Text S 1
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