2RA1

Crystal structure of the N-terminal part of the bacterial S-layer protein SbsC


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.177 

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This is version 1.2 of the entry. See complete history


Literature

The structure and binding behavior of the bacterial cell surface layer protein SbsC.

Pavkov, T.Egelseer, E.M.Tesarz, M.Svergun, D.I.Sleytr, U.B.Keller, W.

(2008) Structure 16: 1226-1237

  • DOI: 10.1016/j.str.2008.05.012
  • Primary Citation of Related Structures:  
    2RA1

  • PubMed Abstract: 
  • Surface layers (S-layers) comprise the outermost cell envelope component of most archaea and many bacteria. Here we present the structure of the bacterial S-layer protein SbsC from Geobacillus stearothermophilus, showing a very elongated and flexible molecule, with strong and specific binding to the secondary cell wall polymer (SCWP) ...

    Surface layers (S-layers) comprise the outermost cell envelope component of most archaea and many bacteria. Here we present the structure of the bacterial S-layer protein SbsC from Geobacillus stearothermophilus, showing a very elongated and flexible molecule, with strong and specific binding to the secondary cell wall polymer (SCWP). The crystal structure of rSbsC((31-844)) revealed a novel fold, consisting of six separate domains, which are connected by short flexible linkers. The N-terminal domain exhibits positively charged residues regularly spaced along the putative ligand binding site matching the distance of the negative charges on the extended SCWP. Upon SCWP binding, a considerable stabilization of the N-terminal domain occurs. These findings provide insight into the processes of S-layer attachment to the underlying cell wall and self-assembly, and also accommodate the observed mechanical strength, the polarity of the S-layer, and the pronounced requirement for surface flexibility inherent to cell growth and division.


    Organizational Affiliation

    Institute of Molecular Biosciences, Structural Biology, University of Graz, Humboldtsrasse 50/3, 8010 Graz, Austria.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Surface layer proteinA412Geobacillus stearothermophilusMutation(s): 0 
Gene Names: sbsC
UniProt
Find proteins for O68840 (Geobacillus stearothermophilus)
Explore O68840 
Go to UniProtKB:  O68840
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.41 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.177 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.645α = 90
b = 94.877β = 106.68
c = 59.646γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-08-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description