2FNP

Crystal structure of SarA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.308 
  • R-Value Work: 0.285 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural and function analyses of the global regulatory protein SarA from Staphylococcus aureus.

Liu, Y.Manna, A.C.Pan, C.H.Kriksunov, I.A.Thiel, D.J.Cheung, A.L.Zhang, G.

(2006) Proc.Natl.Acad.Sci.Usa 103: 2392-2397

  • DOI: 10.1073/pnas.0510439103
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The sarA locus in Staphylococcus aureus controls the expression of many virulence genes. The sarA regulatory molecule, SarA, is a 14.7-kDa protein (124 residues) that binds to the promoter region of target genes. Here we report the 2.6 A-resolution x ...

    The sarA locus in Staphylococcus aureus controls the expression of many virulence genes. The sarA regulatory molecule, SarA, is a 14.7-kDa protein (124 residues) that binds to the promoter region of target genes. Here we report the 2.6 A-resolution x-ray crystal structure of the dimeric winged helix SarA protein, which differs from the published SarA structure dramatically. In the crystal packing, multiple dimers of SarA form a scaffold, possibly via divalent cations. Mutations of individual residues within the DNA-binding helix-turn-helix and the winged region as well as within the metal-binding pocket implicate basic residues R84 and R90 within the winged region to be critical in DNA binding, whereas acidic residues D88 and E89 (wing), D8 and E11 (metal-binding pocket), and cysteine 9 are essential for SarA function. These data suggest that the winged region of the winged helix protein participates in DNA binding and activation, whereas the putative divalent cation binding pocket is only involved in gene function.


    Organizational Affiliation

    Integrated Department of Immunology, National Jewish Medical and Research Center, Biomolecular Structure Program and Department of Pharmacology, School of Medicine, University of Colorado Health Science Center, Denver, CO 80206, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Staphylococcal accessory regulator A
A, B
124Staphylococcus aureus (strain MW2)Mutation(s): 0 
Gene Names: sarA
Find proteins for Q7A1N5 (Staphylococcus aureus (strain MW2))
Go to UniProtKB:  Q7A1N5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.308 
  • R-Value Work: 0.285 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 52.074α = 90.00
b = 64.758β = 117.73
c = 55.564γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
TRUNCATEdata reduction
CNSrefinement
MOSFLMdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-01-31
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance