3KU7

Crystal structure of Helicobacter pylori MinE, a cell division topological specificity factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.268 
  • R-Value Observed: 0.268 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of Helicobacter pylori MinE, a cell division topological specificity factor

Kang, G.B.Song, H.E.Kim, M.K.Youn, H.S.Lee, J.G.An, J.Y.Chun, J.S.Jeon, H.Eom, S.H.

(2010) Mol Microbiol 76: 1222-1231

  • DOI: 10.1111/j.1365-2958.2010.07160.x
  • Primary Citation of Related Structures:  
    3MCD, 3KU7

  • PubMed Abstract: 
  • In Gram-negative bacteria, proper placement of the FtsZ ring, mediated by nucleoid occlusion and the activities of the dynamic oscillating Min proteins MinC, MinD and MinE, is required for correct positioning of the cell division septum. MinE is a topological specificity factor that counters the activity of MinCD division inhibitor at the mid-cell division site ...

    In Gram-negative bacteria, proper placement of the FtsZ ring, mediated by nucleoid occlusion and the activities of the dynamic oscillating Min proteins MinC, MinD and MinE, is required for correct positioning of the cell division septum. MinE is a topological specificity factor that counters the activity of MinCD division inhibitor at the mid-cell division site. Its structure consists of an anti-MinCD domain and a topology specificity domain (TSD). Previous NMR analysis of truncated Escherichia coli MinE showed that the TSD domain contains a long alpha-helix and two anti-parallel beta-strands, which mediate formation of a homodimeric alpha/beta structure. Here we report the crystal structure of full-length Helicobacter pylori MinE and redefine its TSD based on that structure. The N-terminal region of the TSD (residues 19-26), previously defined as part of the anti-MinCD domain, forms a beta-strand (betaA) and participates in TSD folding. In addition, H. pylori MinE forms a dimer through the interaction of anti-parallel betaA-strands. Moreover, we observed serial dimer-dimer interactions within the crystal packing, resulting in the formation of a multimeric structure. We therefore redefine the functional domain of MinE and propose that a multimeric filamentous structure is formed through anti-parallel beta-strand interactions.


    Organizational Affiliation

    School of Life Science, Gwangju Institute of Science & Technology (GIST), Gwangju 500-712, Korea.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cell division topological specificity factorA, B80Helicobacter pyloriMutation(s): 0 
Gene Names: minE
Find proteins for O25099 (Helicobacter pylori (strain ATCC 700392 / 26695))
Explore O25099 
Go to UniProtKB:  O25099
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.268 
  • R-Value Observed: 0.268 
  • Space Group: P 64
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.84α = 90
b = 70.84β = 90
c = 65.509γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
SOLVEphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-05-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2014-02-12
    Changes: Database references