3SZE

Crystal structure of the passenger domain of the E. coli autotransporter EspP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of the Passenger Domain of the Escherichia coli Autotransporter EspP.

Khan, S.Mian, H.S.Sandercock, L.E.Chirgadze, N.Y.Pai, E.F.

(2011) J Mol Biol 413: 985-1000

  • DOI: 10.1016/j.jmb.2011.09.028
  • Primary Citation of Related Structures:  
    3SZE

  • PubMed Abstract: 
  • Autotransporters represent a large superfamily of known and putative virulence factors produced by Gram-negative bacteria. They consist of an N-terminal "passenger domain" responsible for the specific effector functions of the molecule and a C-terminal "β-domain" responsible for translocation of the passenger across the bacterial outer membrane ...

    Autotransporters represent a large superfamily of known and putative virulence factors produced by Gram-negative bacteria. They consist of an N-terminal "passenger domain" responsible for the specific effector functions of the molecule and a C-terminal "β-domain" responsible for translocation of the passenger across the bacterial outer membrane. Here, we present the 2.5-Å crystal structure of the passenger domain of the extracellular serine protease EspP, produced by the pathogen Escherichia coli O157:H7 and a member of the serine protease autotransporters of Enterobacteriaceae (SPATEs). Like the previously structurally characterized SPATE passenger domains, the EspP passenger domain contains an extended right-handed parallel β-helix preceded by an N-terminal globular domain housing the catalytic function of the protease. Of note, however, is the absence of a second globular domain protruding from this β-helix. We describe the structure of the EspP passenger domain in the context of previous results and provide an alternative hypothesis for the function of the β-helix within SPATEs.


    Organizational Affiliation

    Campbell Family Cancer Research Institute, Ontario Cancer Institute, University Health Network, Toronto Medical Discovery Tower, Toronto, Ontario, Canada M5G 1L7.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Serine protease espPA968Escherichia coli O157:H7 str. EDL933Mutation(s): 1 
Gene Names: ECO57PM78espPL7020
EC: 3.4.21
Membrane Entity: Yes 
UniProt
Find proteins for Q7BSW5 (Escherichia coli O157:H7)
Explore Q7BSW5 
Go to UniProtKB:  Q7BSW5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7BSW5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.191 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.34α = 90
b = 88.34β = 90
c = 311.533γ = 90
Software Package:
Software NamePurpose
BioCARS-developeddata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-10-12
    Type: Initial release
  • Version 1.1: 2011-11-30
    Changes: Database references