Crystal structure of Clostridium botulinum phage c-st TubZ

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 

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Tubulin homolog TubZ in a phage-encoded partition system.

Oliva, M.A.Martin-Galiano, A.J.Sakaguchi, Y.Andreu, J.M.

(2012) Proc Natl Acad Sci U S A 109: 7711-7716

  • DOI: https://doi.org/10.1073/pnas.1121546109
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Partition systems are responsible for the process whereby large and essential plasmids are accurately positioned to daughter cells during bacterial division. They are typically made of three components: a centromere-like DNA zone, an adaptor protein, and an assembling protein that is either a Walker-box ATPase (type I) or an actin-like ATPase (type II). A recently described type III segregation system has a tubulin/FtsZ-like protein, called TubZ, for plasmid movement. Here, we present the 2.3 Å structure and dynamic assembly of a TubZ tubulin homolog from a bacteriophage and unravel the Clostridium botulinum phage c-st type III partition system. Using biochemical and biophysical approaches, we prove that a gene upstream from tubZ encodes the partner TubR and localize the centromeric region (tubS), both of which are essential for anchoring phage DNA to the motile TubZ filaments. Finally, we describe a conserved fourth component, TubY, which modulates the TubZ-R-S complex interaction.

  • Organizational Affiliation

    Centro de Investigaciones Biológicas-Consejo Superior de Investigaciones Cientificas, 28040 Madrid, Spain. marian@cib.csic.es

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cell division GTPase FtsZ, diverged360Clostridium botulinum C str. StockholmMutation(s): 1 
Gene Names: CBCST_03566
Find proteins for Q331T7 (Clostridium botulinum C phage)
Explore Q331T7 
Go to UniProtKB:  Q331T7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ331T7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.170 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.99α = 90
b = 85.606β = 93.87
c = 44.935γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
ADSCdata collection
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 2012-05-16 
  • Deposition Author(s): Oliva, M.A.

Revision History  (Full details and data files)

  • Version 1.0: 2012-05-16
    Type: Initial release
  • Version 1.1: 2012-05-30
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references