2VE9

Xray structure of KOPS bound gamma domain of FtsK (P. aeruginosa)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.196 

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:  

  • 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 ...

    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: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA TRANSLOCASE FTSK
A, B, C, D, E, F
73Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)Mutation(s): 0 
Gene Names: ftsK
Find proteins for Q9I0M3 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Go to UniProtKB:  Q9I0M3
Entity ID: 2
MoleculeChainsLengthOrganism
5'-D(*AP*CP*CP*AP*GP*GP*GP*CP*AP*GP *GP*GP*CP*GP*AP*C)-3'I,K16Pseudomonas aeruginosa
Entity ID: 3
MoleculeChainsLengthOrganism
5'-D(*GP*TP*CP*GP*CP*CP*CP*TP*GP*CP *CP*CP*TP*GP*GP*T)-3'J,L16Pseudomonas aeruginosa
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
L
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.196 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 137.937α = 90.00
b = 63.073β = 118.76
c = 76.026γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
REFMACrefinement
SCALAdata scaling
SHELXDphasing
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-09-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance