1CJG

NMR STRUCTURE OF LAC REPRESSOR HP62-DNA COMPLEX


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 14 
  • Conformers Submitted: 11 
  • Selection Criteria: SEE ARTICLE 

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This is version 1.3 of the entry. See complete history


Literature

The solution structure of Lac repressor headpiece 62 complexed to a symmetrical lac operator.

Spronk, C.A.Bonvin, A.M.Radha, P.K.Melacini, G.Boelens, R.Kaptein, R.

(1999) Structure 7: 1483-1492

  • DOI: 10.1016/s0969-2126(00)88339-2
  • Primary Citation of Related Structures:  
    1CJG

  • PubMed Abstract: 
  • Lactose repressor protein (Lac) controls the expression of the lactose metabolic genes in Escherichia coli by binding to an operator sequence in the promoter of the lac operon. Binding of inducer molecules to the Lac core domain induces changes in tertiary structure that are propagated to the DNA-binding domain through the connecting hinge region, thereby reducing the affinity for the operator ...

    Lactose repressor protein (Lac) controls the expression of the lactose metabolic genes in Escherichia coli by binding to an operator sequence in the promoter of the lac operon. Binding of inducer molecules to the Lac core domain induces changes in tertiary structure that are propagated to the DNA-binding domain through the connecting hinge region, thereby reducing the affinity for the operator. Protein-protein and protein-DNA interactions involving the hinge region play a crucial role in the allosteric changes occurring upon induction, but have not, as yet, been analyzed in atomic detail.


    Related Citations: 
    • Backbone and side chain dynamics of lac repressor headpiece (1-56) and its complex with DNA.
      Slijper, M., Boelens, R., Davis, A.L., Konings, R.N., van der Marel, G.A., van Boom, J.H., Kaptein, R.
      (1997) Biochemistry 36: 249
    • Formation of the hinge helix in the lac repressor is induced upon binding to the lac operator.
      Spronk, C.A., Slijper, M., van Boom, J.H., Kaptein, R., Boelens, R.
      (1996) Nat Struct Biol 3: 916
    • Refined structure of lac repressor headpiece (1-56) determined by relaxation matrix calculations from 2D and 3D NOE data: change of tertiary structure upon binding to the lac operator.
      Slijper, M., Bonvin, A.M., Boelens, R., Kaptein, R.
      (1996) J Mol Biol 259: 761
    • Structure of the complex of lac repressor headpiece and an 11 base-pair half-operator determined by nuclear magnetic resonance spectroscopy and restrained molecular dynamics.
      Chuprina, V.P., Rullmann, J.A., Lamerichs, R.M., van Boom, J.H., Boelens, R., Kaptein, R.
      (1993) J Mol Biol 234: 446

    Organizational Affiliation

    Bijvoet Center for Biomolecular Research, Utrecht University, The Netherlands.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (LAC REPRESSOR)C [auth A],
D [auth B]
62Escherichia coliMutation(s): 0 
Gene Names: LAC ITHE PART ENCODING THE 62 N-TERMINAL AMINOACIDS
UniProt
Find proteins for P03023 (Escherichia coli (strain K12))
Explore P03023 
Go to UniProtKB:  P03023
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03023
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
DNA (5'-D(*GP*AP*AP*TP*TP*GP*TP*GP*AP*GP*CP*GP*CP*TP*CP*AP*CP*AP*AP*TP*TP*C)-3')A [auth C],
B [auth D]
22N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 14 
  • Conformers Submitted: 11 
  • Selection Criteria: SEE ARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-01-01
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-11-27
    Changes: Database references, Derived calculations