4G54

Crystal structure of a periplasmic domain of the EpsAB fusion protein of the Vibrio vulnificus type II secretion system


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 

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This is version 1.1 of the entry. See complete history


Literature

Structure of a periplasmic domain of the EpsAB fusion protein of the Vibrio vulnificus type II secretion system.

Martynowski, D.Grochulski, P.Howard, P.S.

(2013) Acta Crystallogr D Biol Crystallogr 69: 142-149

  • DOI: 10.1107/S0907444912042710
  • Primary Citation of Related Structures:  
    4G54

  • PubMed Abstract: 
  • Vibrio vulnificus utilizes the type II secretion system (T2SS), culminating in a megadalton outer membrane complex called the secretin, to translocate extracellular proteins from the periplasmic space across the outer membrane. In Aeromonas hydrophila, the general secretion pathway proteins ExeA and ExeB form an inner membrane complex which interacts with peptidoglycan and is required for the assembly of the secretin composed of ExeD ...

    Vibrio vulnificus utilizes the type II secretion system (T2SS), culminating in a megadalton outer membrane complex called the secretin, to translocate extracellular proteins from the periplasmic space across the outer membrane. In Aeromonas hydrophila, the general secretion pathway proteins ExeA and ExeB form an inner membrane complex which interacts with peptidoglycan and is required for the assembly of the secretin composed of ExeD. In V. vulnificus, these two proteins are fused into one protein, EpsAB. Here, the crystal structure of a periplasmic domain of EpsAB (amino acids 333-584) solved by SAD phasing is presented. The crystals belonged to space group C2 and diffracted to 1.55 Å resolution.


    Organizational Affiliation

    Department of Microbiology and Immunology, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 2W8, Canada.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
General Secretion Pathway ProteinA258Vibrio vulnificusMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 128.821α = 90
b = 44.523β = 110.59
c = 51.04γ = 90
Software Package:
Software NamePurpose
MsDCdata collection
PHENIXmodel building
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-01-30
    Type: Initial release
  • Version 1.1: 2013-03-27
    Changes: Database references