4QTQ

Structure of a Xanthomonas Type IV Secretion System related protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Bacterial killing via a type IV secretion system.

Souza, D.P.Oka, G.U.Alvarez-Martinez, C.E.Bisson-Filho, A.W.Dunger, G.Hobeika, L.Cavalcante, N.S.Alegria, M.C.Barbosa, L.R.Salinas, R.K.Guzzo, C.R.Farah, C.S.

(2015) Nat Commun 6: 6453-6453

  • DOI: 10.1038/ncomms7453
  • Primary Citation of Related Structures:  
    4QTQ

  • PubMed Abstract: 
  • Type IV secretion systems (T4SSs) are multiprotein complexes that transport effector proteins and protein-DNA complexes through bacterial membranes to the extracellular milieu or directly into the cytoplasm of other cells. Many bacteria of the family Xanthomonadaceae, which occupy diverse environmental niches, carry a T4SS with unknown function but with several characteristics that distinguishes it from other T4SSs ...

    Type IV secretion systems (T4SSs) are multiprotein complexes that transport effector proteins and protein-DNA complexes through bacterial membranes to the extracellular milieu or directly into the cytoplasm of other cells. Many bacteria of the family Xanthomonadaceae, which occupy diverse environmental niches, carry a T4SS with unknown function but with several characteristics that distinguishes it from other T4SSs. Here we show that the Xanthomonas citri T4SS provides these cells the capacity to kill other Gram-negative bacterial species in a contact-dependent manner. The secretion of one type IV bacterial effector protein is shown to require a conserved C-terminal domain and its bacteriolytic activity is neutralized by a cognate immunity protein whose 3D structure is similar to peptidoglycan hydrolase inhibitors. This is the first demonstration of the involvement of a T4SS in bacterial killing and points to this special class of T4SS as a mediator of both antagonistic and cooperative interbacterial interactions.


    Organizational Affiliation

    Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, Sao Paulo, SP 05508-000, Brazil.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
XAC2610 proteinA214Xanthomonas citri pv. citri str. 306Mutation(s): 0 
Gene Names: XAC2610Xanthomonas axonopodis pv. citri
Find proteins for Q8PJC5 (Xanthomonas axonopodis pv. citri (strain 306))
Explore Q8PJC5 
Go to UniProtKB:  Q8PJC5
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: 2.00 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 160.457α = 90
b = 37.695β = 92.61
c = 43.252γ = 90
Software Package:
Software NamePurpose
d*TREKdata scaling
SHELXDEphasing
REFMACrefinement
d*TREKdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-06-17
    Type: Initial release