2FD4

Crystal Structure of AvrPtoB (436-553)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

A bacterial inhibitor of host programmed cell death defenses is an E3 ubiquitin ligase.

Janjusevic, R.Abramovitch, R.B.Martin, G.B.Stebbins, C.E.

(2006) Science 311: 222-226

  • DOI: 10.1126/science.1120131

  • PubMed Abstract: 
  • The Pseudomonas syringae protein AvrPtoB is translocated into plant cells, where it inhibits immunity-associated programmed cell death (PCD). The structure of a C-terminal domain of AvrPtoB that is essential for anti-PCD activity reveals an unexpecte ...

    The Pseudomonas syringae protein AvrPtoB is translocated into plant cells, where it inhibits immunity-associated programmed cell death (PCD). The structure of a C-terminal domain of AvrPtoB that is essential for anti-PCD activity reveals an unexpected homology to the U-box and RING-finger components of eukaryotic E3 ubiquitin ligases, and we show that AvrPtoB has ubiquitin ligase activity. Mutation of conserved residues involved in the binding of E2 ubiquitin-conjugating enzymes abolishes this activity in vitro, as well as anti-PCD activity in tomato leaves, which dramatically decreases virulence. These results show that Pseudomonas syringae uses a mimic of host E3 ubiquitin ligases to inactivate plant defenses.


    Organizational Affiliation

    Laboratory of Structural Microbiology, Rockefeller University, New York, NY 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
avirulence protein AvrptoB
A
122Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000)Mutation(s): 0 
Gene Names: hopAB2 (avrPtoB)
Find proteins for Q8RSY1 (Pseudomonas syringae pv. tomato (strain ATCC BAA-871 / DC3000))
Go to UniProtKB:  Q8RSY1
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.242 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 61.863α = 90.00
b = 61.863β = 90.00
c = 60.419γ = 120.00
Software Package:
Software NamePurpose
RESOLVEphasing
PDB_EXTRACTdata extraction
DENZOdata reduction
SOLVEphasing
SCALEPACKdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-12-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description