4KL0

Crystal structure of the effector protein XOO4466


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.203 

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This is version 1.1 of the entry. See complete history


Literature

Crystal structure of the effector protein XOO4466 from Xanthomonas oryzae

Yu, S.Hwang, I.Rhee, S.

(2013) J Struct Biol 184: 361-366

  • DOI: 10.1016/j.jsb.2013.08.007
  • Primary Citation of Related Structures:  
    4KL0

  • PubMed Abstract: 
  • Many Gram-negative bacteria deliver their virulence factors into host cells through a secretion system. Those factors, called effector proteins, are involved in the pathogenicity in host cells by interfering with various cellular events. The phytopathogen Xanthomonas oryzae pv ...

    Many Gram-negative bacteria deliver their virulence factors into host cells through a secretion system. Those factors, called effector proteins, are involved in the pathogenicity in host cells by interfering with various cellular events. The phytopathogen Xanthomonas oryzae pv. oryzae uses a type III secretion system to inject its effectors, but the functional roles of these proteins remain largely uncharacterized. Here, we determined a crystal structure of XOO4466, an effector from X. oryzae pv. oryzae, and performed a functional analysis. We determined that XOO4466 is similar in sequence to Xanthomonas outer protein Q, a putative nucleoside hydrolase (NH). The overall structure of XOO4466 is homologous to that of NHs, including a metal-binding site, but differs in its oligomeric state and active site topology. Further analysis indicated that antiparallel β-strands commonly found in NHs adjacent to the active site loop are replaced in XOO4466 with a short loop, causing the active site loop to adopt a conformation distinct from that of NHs. Thus, the catalytic residues emanating from the respective active site loop of NHs are absent in the putative active site of XOO4466. Consistent with these structural features, a functional assay indicated that XOO4466 does not exhibit NH activity and possibly catalyzes yet unknown reactions.


    Organizational Affiliation

    Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Putative uncharacterized proteinA379Xanthomonas oryzae pv. oryzae KACC 10331Mutation(s): 0 
Gene Names: XOO4466URH1
UniProt
Find proteins for Q5GUA3 (Xanthomonas oryzae pv. oryzae (strain KACC10331 / KXO85))
Explore Q5GUA3 
Go to UniProtKB:  Q5GUA3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5GUA3
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download Ideal Coordinates CCD File 
B [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.203 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.832α = 90
b = 70.528β = 99.89
c = 49.083γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2013-05-07 
  • Released Date: 2013-10-09 
  • Deposition Author(s): Yu, S., Rhee, S.

Revision History  (Full details and data files)

  • Version 1.0: 2013-10-09
    Type: Initial release
  • Version 1.1: 2013-12-11
    Changes: Database references