1G4D

NMR STRUCTURE OF THE MU BACTERIOPHAGE REPRESSOR DNA-BINDING DOMAIN/DNA COMPLEX


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 

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This is version 1.3 of the entry. See complete history


Literature

The Mu repressor-DNA complex contains an immobilized 'wing' within the minor groove.

Wojciak, J.M.Iwahara, J.Clubb, R.T.

(2001) Nat Struct Biol 8: 84-90

  • DOI: 10.1038/83103
  • Primary Citation of Related Structures:  
    1G4D

  • PubMed Abstract: 
  • We have determined the solution structure of the complex between the 'winged-helix' enhancer binding domain of the Mu repressor protein and its cognate DNA site. The structure reveals an unusual use for the 'wing' which becomes immobilized upon DNA binding where it makes intermolecular hydrogen bond contacts deep within the minor groove ...

    We have determined the solution structure of the complex between the 'winged-helix' enhancer binding domain of the Mu repressor protein and its cognate DNA site. The structure reveals an unusual use for the 'wing' which becomes immobilized upon DNA binding where it makes intermolecular hydrogen bond contacts deep within the minor groove. Although the wing is mobile in the absence of DNA, it partially negates the large entropic penalty associated with its burial by maintaining a small degree of structural order in the DNA-free state. Extensive contacts are also formed between the recognition helix and the DNA, which reads the major groove of a highly conserved region of the binding site through a single base-specific hydrogen bond and van der Waals contacts.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, Molecular Biology Institute and the UCLA-DOE Laboratory of Structural Biology and Molecular Medicine, University of California, Los Angeles 90095, USA.



Macromolecules

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
REPRESSOR PROTEIN CC [auth A]69Escherichia virus MuMutation(s): 0 
Gene Names: MU CrepccMup01
UniProt
Find proteins for P06019 (Escherichia phage Mu)
Explore P06019 
Go to UniProtKB:  P06019
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06019
Protein Feature View
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganismImage
5'-D(P*CP*CP*TP*TP*TP*TP*CP*AP*GP*TP*AP*AP*TP*CP*TP*G)-3'A [auth B]16N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
5'-D(P*CP*AP*GP*AP*TP*TP*AP*CP*TP*GP*AP*AP*AP*AP*GP*G)-3'B [auth C]16N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 25 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 1G4D Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-11-08
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-02-23
    Changes: Database references, Derived calculations