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 

wwPDB Validation 3D Report Full Report


This is version 1.2 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 Fold.Des. 7: 1483-1492


  • 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 te ...

    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 Sidechain Dynamics of Lac Repressor Headpiece (1-56) and its Complex with DNA
      Slijper, M.,Boelens, R.,Davis, A.L.,Konings, R.N.H.,Van Der Marel, G.A.,Van Bloom, J.H.
      (1997) Biochemistry 36: 249
    • 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
    • Formation of the Hinge Helix in the Lac Repressor is Induced Upon Binding to the Lac Operator
      Spronk, C.A.E.M.,Slijper, M.,Van Boom, J.H.,Kaptein, R.,Boelens, R.
      (1996) Nat.Struct.Mol.Biol. 3: 916
    • Refined Structure of Lac Repressor Headpiece (1-56) Determined by Relaxtaion Matrix Calculations from 2D and 3D Noe Data: Change of Tertiary Structure Upon Binding to Lac Operator
      Slijper, M.,Bonvin, A.M.J.J.,Boelens, R.,Kaptein, R.
      (1996) J.Mol.Biol. 259: 761


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (LAC REPRESSOR)
A, B
62Escherichia coli (strain K12)Gene Names: lacI
Find proteins for P03023 (Escherichia coli (strain K12))
Go to UniProtKB:  P03023
Entity ID: 1
MoleculeChainsLengthOrganism
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')C,D22N/A
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 14 
  • Conformers Submitted: 11 
  • Selection Criteria: SEE ARTICLE 
  • Olderado: 1CJG Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-01-01
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance