3HHG

Structure of CrgA, a LysR-type transcriptional regulator from Neisseria meningitidis.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The structure of CrgA from Neisseria meningitidis reveals a new octameric assembly state for LysR transcriptional regulators

Sainsbury, S.Lane, L.A.Ren, J.Gilbert, R.J.Saunders, N.J.Robinson, C.V.Stuart, D.I.Owens, R.J.

(2009) Nucleic Acids Res 37: 4545-4558

  • DOI: 10.1093/nar/gkp445
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • LysR-type transcriptional regulators (LTTRs) form the largest family of bacterial regulators acting as both auto-repressors and activators of target promoters, controlling operons involved in a wide variety of cellular processes. The LTTR, CrgA, from ...

    LysR-type transcriptional regulators (LTTRs) form the largest family of bacterial regulators acting as both auto-repressors and activators of target promoters, controlling operons involved in a wide variety of cellular processes. The LTTR, CrgA, from the human pathogen Neisseria meningitidis, is upregulated during bacterial-host cell contact. Here, we report the crystal structures of both regulatory domain and full-length CrgA, the first of a novel subclass of LTTRs that form octameric rings. Non-denaturing mass spectrometry analysis and analytical ultracentrifugation established that the octameric form of CrgA is the predominant species in solution in both the presence and absence of an oligonucleotide encompassing the CrgA-binding sequence. Furthermore, analysis of the isolated CrgA-DNA complex by mass spectrometry showed stabilization of a double octamer species upon DNA binding. Based on the observed structure and the mass spectrometry findings, a model is proposed in which a hexadecameric array of two CrgA oligomers binds to its DNA target site.


    Organizational Affiliation

    The Oxford Protein Production Facility and Division of Structural Biology, Henry Wellcome Building for Genomic Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcriptional regulator, LysR family
A, B, C, D, E, F, G, H
306Neisseria meningitidis serogroup BMutation(s): 0 
Gene Names: CrgANMB1856
Find proteins for Q9JXW7 (Neisseria meningitidis serogroup B (strain MC58))
Go to UniProtKB:  Q9JXW7
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.638α = 90
b = 119.091β = 90
c = 250.204γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-07-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance