Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 9482.88 
• Atom Count: 501 
• Residue Count: 81 
• Unique protein chains: 1

1UMQ

solution structure and DNA binding of the effector domain from the global regulator PrrA(RegA) from R. sphaeroides: Insights into DNA binding specificity

• DOI: 10.2210/pdb1UMQ/pdb
• BMRB: 5920

• Classification: DNA BINDING PROTEIN
• Organism(s): Rhodobacter sphaeroides (strain ATCC 17023 / 2.4.1 / NCIB 8253 / DSM 158)
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2003-08-28 Released: 2003-11-21 
• Deposition Author(s): Laguri, C., Phillips-Jones, M.K., Williamson, M.P.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 5 
• Selection Criteria: RANDOM 

Literature

Solution Structure and DNA Binding of the Effector Domain from the Global Regulator Prra(Rega) from Rhodobacter Sphaeroides: Insights Into DNA Binding Specificity

Laguri, C., Phillips-Jones, M.K., Williamson, M.P.

(2003) Nucleic Acids Res. 31: 6778

• PubMed: 14627811 


• PubMed Abstract: 
  

Prr/RegA response regulator is a global transcription regulator in purple bacteria Rhodobacter sphaeroides and Rhodobacter capsulatus, and is essential in controlling the metabolic changes between aerobic and anaerobic environments. We report here the structure determination by NMR of the C-terminal effector domain of PrrA, PrrAC. It forms a three-helix bundle containing a helix-turn-helix DNA binding motif. The fold is similar to FIS protein, but the domain architecture is different from previously characterised response regulator effector domains, as it is shorter than any characterised so far. Alignment of Prr/RegA DNA targets permitted a refinement of the consensus sequence, which contains two GCGNC inverted repeats with variable half-site spacings. NMR titrations of PrrAC with specific and non-specific DNA show which surfaces are involved in DNA binding and suggest residues important for binding specificity. A model of the PrrAC/DNA complex was constructed in which two PrrAC molecules are bound to DNA in a symmetrical manner.

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Organizational Affiliation: 

Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield S10 2UH, UK.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PHOTOSYNTHETIC APPARATUS REGULATORY PROTEIN	A	81	Rhodobacter sphaeroides (strain ATCC 17023 / 2.4.1 / NCIB 8253 / DSM 158)	Mutation(s): 0  Gene Names: regA (prrA)
Find proteins for Q53228 (Rhodobacter sphaeroides (strain ATCC 17023 / 2.4.1 / NCIB 8253 / DSM 158)) Go to UniProtKB:  Q53228

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 20 
• Conformers Submitted: 5 
• Selection Criteria: RANDOM 
• Olderado: 1UMQ Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-08-28 
• Released Date: 2003-11-21 
• Deposition Author(s): Laguri, C., Phillips-Jones, M.K., Williamson, M.P.

Revision History 

• Version 1.0: 2003-11-21
  Type: Initial release
• Version 1.1: 2011-05-08
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance