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 

wwPDB Validation 3D Report Full Report


This is version 1.5 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

  • 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. This article is protected by copyright. All rights reserved.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, Illinois, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized Protein COG5400
A, B
163Brucella abortus (strain 2308)Mutation(s): 0 
Find proteins for Q2YQA6 (Brucella abortus (strain 2308))
Go to UniProtKB:  Q2YQA6
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
1PE
Query on 1PE

Download SDF File 
Download CCD File 
A, B
PENTAETHYLENE GLYCOL
PEG400
C10 H22 O6
JLFNLZLINWHATN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-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 
  • Space Group: P 63
  • Diffraction Data DOI: 
    10.15785/SBGRID/444 SBGrid
Unit Cell:
Length (Å)Angle (°)
a = 113.075α = 90.00
b = 113.075β = 90.00
c = 64.308γ = 120.00
Software Package:
Software NamePurpose
HKL-3000phasing
HKL-3000data scaling
PHENIXrefinement
HKL-3000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited States--

Revision History 

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