5UC0

Crystal Structure of Beta-barrel-like, Uncharacterized Protein of COG5400 from Brucella abortus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.6 of the entry. See complete history


Literature

Periplasmic protein EipA determines envelope stress resistance and virulence in Brucella abortus.

Herrou, J.Willett, J.W.Fiebig, A.Varesio, L.M.Czyz, D.M.Cheng, J.X.Ultee, E.Briegel, A.Bigelow, L.Babnigg, G.Kim, Y.Crosson, S.

(2018) Mol Microbiol 

  • DOI: 10.1111/mmi.14178
  • Primary Citation of Related Structures:  
    5UC0

  • PubMed Abstract: 
  • Molecular components of the Brucella abortus cell envelope play a major role in its ability to infect, colonize and survive inside mammalian host cells. In this study, we have defined a role for a conserved gene of unknown function in B. abortus enve ...

    Molecular components of the Brucella abortus cell envelope play a major role in its ability to infect, colonize and survive inside mammalian host cells. In this study, we have defined a role for a conserved gene of unknown function in B. abortus envelope stress resistance and infection. Expression of this gene, which we name eipA, is directly activated by the essential cell cycle regulator, CtrA. eipA encodes a soluble periplasmic protein that adopts an unusual eight-stranded β-barrel fold. Deletion of eipA attenuates replication and survival in macrophage and mouse infection models, and results in sensitivity to treatments that compromise the cell envelope integrity. Transposon disruption of genes required for LPS O-polysaccharide biosynthesis is synthetically lethal with eipA deletion. This genetic connection between O-polysaccharide and eipA is corroborated by our discovery that eipA is essential in Brucella ovis, a naturally rough species that harbors mutations in several genes required for O-polysaccharide production. Conditional depletion of eipA expression in B. ovis results in a cell chaining phenotype, providing evidence that eipA directly or indirectly influences cell division in Brucella. We conclude that EipA is a molecular determinant of Brucella virulence that functions to maintain cell envelope integrity and influences cell division.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, IL, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized Protein COG5400AB163Brucella abortus 2308Mutation(s): 0 
Gene Names: BAB1_1612
Find proteins for Q2YQA6 (Brucella abortus (strain 2308))
Explore Q2YQA6 
Go to UniProtKB:  Q2YQA6
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
1PE
Query on 1PE

Download CCD File 
A, B
PENTAETHYLENE GLYCOL
C10 H22 O6
JLFNLZLINWHATN-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CL
Query on CL

Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,BL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.73 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.176 
  • R-Value Observed: 0.179 
  • Space Group: P 63
  • Diffraction Data DOI: 10.15785/SBGRID/444 SBGrid
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 113.075α = 90
b = 113.075β = 90
c = 64.308γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
HKL-3000phasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United States--

Revision History 

  • Version 1.0: 2017-02-08
    Type: Initial release
  • Version 1.1: 2017-02-15
    Changes: Derived calculations, Structure summary
  • Version 1.2: 2017-09-20
    Changes: Author supporting evidence
  • Version 1.3: 2017-11-01
    Changes: Author supporting evidence
  • Version 1.4: 2018-01-24
    Changes: Database references, Structure summary
  • Version 1.5: 2018-12-19
    Changes: Data collection, Database references
  • Version 1.6: 2020-01-01
    Changes: Author supporting evidence