1P4W

Solution structure of the DNA-binding domain of the Erwinia amylovora RcsB protein


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: The submitted conformer models are those with the fewest number of constraint violations 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural analysis of the DNA-binding domain of the Erwinia amylovora RcsB protein and its interaction with the RcsAB box.

Pristovsek, P.Sengupta, K.Lohr, F.Schafer, B.von Trebra, M.W.Ruterjans, H.Bernhard, F.

(2003) J.Biol.Chem. 278: 17752-17759

  • DOI: 10.1074/jbc.M301328200

  • PubMed Abstract: 
  • The transcriptional regulator RcsB interacts with other coactivators to control the expression of biosynthetic operons in enterobacteria. While in a heterodimer complex with the regulator RcsA the RcsAB box consensus is recognized, DNA binding sites ...

    The transcriptional regulator RcsB interacts with other coactivators to control the expression of biosynthetic operons in enterobacteria. While in a heterodimer complex with the regulator RcsA the RcsAB box consensus is recognized, DNA binding sites for RcsB without RcsA have also been identified. The conformation of RcsB might therefore be modulated upon interaction with various coactivators, resulting in the recognition of different DNA targets. We report the solution structure of the C-terminal DNA-binding domain of the RcsB protein from Erwinia amylovora spanning amino acid residues 129-215 solved by heteronuclear magnetic resonance (NMR) spectroscopy. The C-terminal domain is composed of four alpha-helices where two central helices form a helix-turn-helix motif similar to the structures of the regulatory proteins GerE, NarL, and TraR. Amino acid residues involved in the RcsA independent DNA binding of RcsB were identified by titration studies with a RcsAB box consensus fragment. Data obtained from NMR spectroscopy together with surface plasmon resonance measurements demonstrate that the RcsAB box is specifically recognized by the RcsAB heterodimer as well as by RcsB alone. However, the binding constant of RcsB alone at target promoters from Escherichia coli, E. amylovora, and Pantoea stewartii was approximately 1 order of magnitude higher compared with that of the RcsAB heterodimer. We present evidence that the obvious role of RcsA is not to alter the DNA binding specificity of RcsB but to stabilize RcsB-DNA complexes.


    Organizational Affiliation

    Kemijski Institute, National Institute of Chemistry, Hajdrihova 19, P. O. Box 660, SI-1001 Ljubljana, Slovenia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
rcsB
A
99Erwinia amylovoraMutation(s): 0 
Gene Names: rcsB
Find proteins for P96320 (Erwinia amylovora)
Go to UniProtKB:  P96320
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: The submitted conformer models are those with the fewest number of constraint violations 
  • Olderado: 1P4W Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-06-17
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance