3KS2

Crystal Structure of Type-III Secretion Chaperone IpgC from Shigella flexneri (residues 10-155)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.259 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Evidence for alternative quaternary structure in a bacterial Type III secretion system chaperone

Barta, M.L.Zhang, L.Picking, W.L.Geisbrecht, B.V.

(2010) Bmc Struct.Biol. 10: 21-21

  • DOI: 10.1186/1472-6807-10-21

  • PubMed Abstract: 
  • Type III secretion systems are a common virulence mechanism in many Gram-negative bacterial pathogens. These systems use a nanomachine resembling a molecular needle and syringe to provide an energized conduit for the translocation of effector protein ...

    Type III secretion systems are a common virulence mechanism in many Gram-negative bacterial pathogens. These systems use a nanomachine resembling a molecular needle and syringe to provide an energized conduit for the translocation of effector proteins from the bacterial cytoplasm to the host cell cytoplasm for the benefit of the pathogen. Prior to translocation specialized chaperones maintain proper effector protein conformation. The class II chaperone, Invasion plasmid gene (Ipg) C, stabilizes two pore forming translocator proteins. IpgC exists as a functional dimer to facilitate the mutually exclusive binding of both translocators.


    Organizational Affiliation

    Division of Cell Biology and Biophysics, School of Biological Sciences, University of Missouri-Kansas City, Kansas City, MO, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chaperone protein ipgC
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R
151Shigella flexneriMutation(s): 0 
Gene Names: ipgC (ippI)
Find proteins for P0A2U4 (Shigella flexneri)
Go to UniProtKB:  P0A2U4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.259 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 140.496α = 90.00
b = 71.474β = 93.86
c = 171.012γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
HKL-2000data collection
PHASERphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-08-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance