1GXQ

Crystal structure of the PhoB effector domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Tandem DNA Recognition by Two-Component Signal Transduction Transcriptional Activator Phob

Blanco, A.G.Sola, M.Gomis-Ruth, F.X.Coll, M.

(2002) Structure 10: 701

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • PhoB is a signal transduction response regulator that activates nearly 40 genes in phosphate depletion conditions in E. coli and closely related bacteria. The structure of the PhoB effector domain in complex with its target DNA sequence, or pho box, ...

    PhoB is a signal transduction response regulator that activates nearly 40 genes in phosphate depletion conditions in E. coli and closely related bacteria. The structure of the PhoB effector domain in complex with its target DNA sequence, or pho box, reveals a novel tandem arrangement in which several monomers bind head to tail to successive 11-base pair direct-repeat sequences, coating one face of a smoothly bent double helix. The protein has a winged helix fold in which the DNA recognition elements comprise helix alpha 3, penetrating the major groove, and a beta hairpin wing interacting with a compressed minor groove via Arg219, tightly sandwiched between the DNA sugar backbones. The transactivation loops protrude laterally in an appropriate orientation to interact with the RNA polymerase sigma(70) subunit, which triggers transcription initiation.


    Organizational Affiliation

    Institut de Biologia Molecular de Barcelona, CSIC, Jordi Girona, 18-26, E-08034 Barcelona, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHATE REGULON TRANSCRIPTIONAL REGULATORY PROTEIN PHOB
A
106Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: phoB
Find proteins for P0AFJ5 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AFJ5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.200 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 84.650α = 90.00
b = 37.290β = 90.00
c = 30.510γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
MOSFLMdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-04-29
    Type: Initial release
  • Version 1.1: 2015-02-25
    Type: Database references, Derived calculations, Non-polymer description, Other, Refinement description, Source and taxonomy, Structure summary, Version format compliance