3W30

Structual basis for the recognition of Ubc13 by the Shigella flexneri effector OspI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.99 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis for the Recognition of Ubc13 by the Shigella flexneri Effector OspI.

Nishide, A.Kim, M.Takagi, K.Himeno, A.Sanada, T.Sasakawa, C.Mizushima, T.

(2013) J.Mol.Biol. 425: 2623-2631

  • DOI: 10.1016/j.jmb.2013.02.037
  • Primary Citation of Related Structures:  3W31

  • PubMed Abstract: 
  • Ubc13 is a ubiquitin-conjugating enzyme that plays a key role in the nuclear factor-κB signal transduction pathway in human diseases. The Shigella flexneri effector OspI affects inflammatory responses by catalyzing the deamidation of a specific gluta ...

    Ubc13 is a ubiquitin-conjugating enzyme that plays a key role in the nuclear factor-κB signal transduction pathway in human diseases. The Shigella flexneri effector OspI affects inflammatory responses by catalyzing the deamidation of a specific glutamine residue at position 100 in Ubc13 during infection. This modification prevents the activation of the TNF (tumor necrosis factor) receptor-associated factor 6, leading to modulation of the diacylglycerol-CBM (CARD-Bcl10-Malt1) complex-TNF receptor-associated factor 6-nuclear factor-κB signaling pathway. To elucidate the structural basis of OspI function, we determined the crystal structures of the catalytically inert OspI C62A mutant and its complex with Ubc13 at resolutions of 3.0 and 2.96Å, respectively. The structure of the OspI-Ubc13 complex revealed that the interacting surfaces between OspI and Ubc13 are a hydrophobic surface and a complementary charged surface. Furthermore, we predict that the complementary charged surface of OspI plays a key role in substrate specificity determination.


    Organizational Affiliation

    Picobiology Institute, Department of Life Science, Graduate School of Life Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ORF169b
A, B
220Shigella flexneriGene Names: ORF169b
Find proteins for Q8VSD5 (Shigella flexneri)
Go to UniProtKB:  Q8VSD5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.99 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.230 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 67.583α = 90.00
b = 67.352β = 90.00
c = 84.840γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
REFMACrefinement
HKL-2000data reduction
HKL-2000data collection
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-03-27
    Type: Initial release
  • Version 1.1: 2013-07-17
    Type: Database references