4OM9

X-Ray Crystal Structure of the passenger domain of Plasmid encoded toxin, an Autrotansporter Enterotoxin from enteroaggregative Escherichia coli (EAEC)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

X-ray crystal structure of the passenger domain of plasmid encoded toxin(Pet), an autotransporter enterotoxin from enteroaggregative Escherichia coli (EAEC).

Domingo Meza-Aguilar, J.Fromme, P.Torres-Larios, A.Mendoza-Hernandez, G.Hernandez-Chinas, U.Arreguin-Espinosa de Los Monteros, R.A.Eslava Campos, C.A.Fromme, R.

(2014) Biochem.Biophys.Res.Commun. 445: 439-444

  • DOI: 10.1016/j.bbrc.2014.02.016

  • PubMed Abstract: 
  • Autotransporters (ATs) represent a superfamily of proteins produced by a variety of pathogenic bacteria, which include the pathogenic groups of Escherichia coli (E. coli) associated with gastrointestinal and urinary tract infections. We present the f ...

    Autotransporters (ATs) represent a superfamily of proteins produced by a variety of pathogenic bacteria, which include the pathogenic groups of Escherichia coli (E. coli) associated with gastrointestinal and urinary tract infections. We present the first X-ray structure of the passenger domain from the Plasmid-encoded toxin (Pet) a 100 kDa protein at 2.3 Å resolution which is a cause of acute diarrhea in both developing and industrialized countries. Pet is a cytoskeleton-altering toxin that induces loss of actin stress fibers. While Pet (pdb code: 4OM9) shows only a sequence identity of 50% compared to the closest related protein sequence, extracellular serine protease plasmid (EspP) the structural features of both proteins are conserved. A closer structural look reveals that Pet contains a β-pleaded sheet at the sequence region of residues 181-190, the corresponding structural domain in EspP consists of a coiled loop. Secondary, the Pet passenger domain features a more pronounced beta sheet between residues 135 and 143 compared to the structure of EspP.


    Organizational Affiliation

    Departamento de Salud Pública Facultad de Medicina UNAM, Ciudad Universitaria Coyoacán 04510, D.F., Mexico; Laboratorio de Patogenicidad Bacteriana, Unidad de Hemato Oncología e Investigación, Hospital Infantil de México Federico Gómez 06720, D.F., Mexico.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine protease pet
A
966Escherichia coli O44:H18 (strain 042 / EAEC)Mutation(s): 0 
Gene Names: pet
EC: 3.4.21.-
Find proteins for O68900 (Escherichia coli O44:H18 (strain 042 / EAEC))
Go to UniProtKB:  O68900
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.220 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 77.758α = 90.00
b = 95.926β = 90.00
c = 164.869γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata reduction
ADSCdata collection
SCALAdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-03-12
    Type: Initial release
  • Version 1.1: 2014-03-26
    Type: Database references, Structure summary
  • Version 1.2: 2014-04-02
    Type: Database references