2QYU

Crystal structure of Salmonella effector protein SopA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.204 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of SopA, a Salmonella effector protein mimicking a eukaryotic ubiquitin ligase.

Diao, J.Zhang, Y.Huibregtse, J.M.Zhou, D.Chen, J.

(2008) Nat.Struct.Mol.Biol. 15: 65-70

  • DOI: 10.1038/nsmb1346
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bacterial pathogens deliver virulence proteins into host cells to facilitate entry and survival. Salmonella SopA functions as an E3 ligase to manipulate the host proinflammatory response. Here we report the crystal structure of SopA in two conformati ...

    Bacterial pathogens deliver virulence proteins into host cells to facilitate entry and survival. Salmonella SopA functions as an E3 ligase to manipulate the host proinflammatory response. Here we report the crystal structure of SopA in two conformations. Although it has little sequence similarity to eukaryotic HECT-domain E3s, the C-terminal half of SopA has a bilobal architecture that is reminiscent of the N- and C-lobe arrangement of HECT domains. The SopA structure also contains a putative substrate-binding domain located near the E2-binding site. The two structures of SopA differ in the relative orientations of the C lobe, indicating that SopA possesses the conformational flexibility essential for HECT E3 function. These results suggest that SopA is a unique HECT E3 ligase evolved from the coevolutionary selective pressure at the bacterium-host interface.


    Related Citations: 
    • The inflammation-associated Salmonella SopA is a HECT-like E3 ubiquitin ligase
      Zhang, Y.,Higashide, W.M.,McCormick, B.,Chen, J.,Zhou, D.
      (2006) Mol.Microbiol. 62: 786


    Organizational Affiliation

    Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Secreted effector protein
A
627Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Mutation(s): 0 
Gene Names: sopA
EC: 2.3.2.26
Find proteins for Q8ZNR3 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  Q8ZNR3
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
B3P
Query on B3P

Download SDF File 
Download CCD File 
A
2-[3-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-PROPYLAMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL
C11 H26 N2 O6
HHKZCCWKTZRCCL-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.204 
  • Space Group: P 41 2 2
Unit Cell:
Length (Å)Angle (°)
a = 79.720α = 90.00
b = 79.720β = 90.00
c = 212.731γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
REFMACrefinement
AMoREphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2007-08-15 
  • Released Date: 2007-12-11 
  • Deposition Author(s): Diao, J., Chen, J.

Revision History 

  • Version 1.0: 2007-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Source and taxonomy, Version format compliance