2VE8

Xray structure of FtsK gamma domain (P. aeruginosa)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.146 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular Mechanism of Sequence-Directed DNA Loading and Translocation by Ftsk.

Lowe, J.Ellonen, A.Allen, M.D.Atkinson, C.Sherratt, D.J.Grainge, I.

(2008) Mol Cell 31: 498

  • DOI: 10.1016/j.molcel.2008.05.027
  • Primary Citation of Related Structures:  
    2VE9, 2VE8

  • PubMed Abstract: 
  • Dimeric circular chromosomes, formed by recombination between monomer sisters, cannot be segregated to daughter cells at cell division. XerCD site-specific recombination at the Escherichia coli dif site converts these dimers to monomers in a reaction that requires the DNA translocase FtsK ...

    Dimeric circular chromosomes, formed by recombination between monomer sisters, cannot be segregated to daughter cells at cell division. XerCD site-specific recombination at the Escherichia coli dif site converts these dimers to monomers in a reaction that requires the DNA translocase FtsK. Short DNA sequences, KOPS (GGGNAGGG), which are polarized toward dif in the chromosome, direct FtsK translocation. FtsK interacts with KOPS through a C-terminal winged helix domain gamma. The crystal structure of three FtsKgamma domains bound to 8 bp KOPS DNA demonstrates how three gamma domains recognize KOPS. Using covalently linked dimers of FtsK, we infer that three gamma domains per hexamer are sufficient to recognize KOPS and load FtsK and subsequently activate recombination at dif. During translocation, FtsK fails to recognize an inverted KOPS sequence. Therefore, we propose that KOPS act solely as a loading site for FtsK, resulting in a unidirectionally oriented hexameric motor upon DNA.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB20QH, UK. jyl@mrc-lmb.cam.ac.uk



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA TRANSLOCASE FTSKA, B, C, D, E, F, G, H73Pseudomonas aeruginosaMutation(s): 0 
UniProt
Find proteins for Q9I0M3 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9I0M3 
Go to UniProtKB:  Q9I0M3
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.144 
  • R-Value Observed: 0.146 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.494α = 90
b = 58.496β = 92.51
c = 95.408γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-09-09
    Type: Initial release
  • Version 1.1: 2012-01-25
    Changes: Advisory, Other, Version format compliance