2XF7

Crystal structure of Bacillus subtilis SPP1 phage gp23.1, a putative chaperone. High-resolution structure.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.61 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of Bacillus Subtilis Spp1 Phage Gp23.1, A Putative Chaperone.

Veesler, D.Blangy, S.Lichiere, J.Ortiz-Lombardia, M.Tavares, P.Campanacci, V.Cambillau, C.

(2010) Protein Sci 19: 1812

  • DOI: 10.1002/pro.464
  • Primary Citation of Related Structures:  
    2XF5, 2XF6, 2XF7

  • PubMed Abstract: 
  • SPP1 is a siphophage infecting the gram-positive bacterium Bacillus subtilis. The SPP1 tail electron microscopy (EM) reconstruction revealed that it is mainly constituted by conserved structural proteins such as the major tail proteins (gp17.1), the ...

    SPP1 is a siphophage infecting the gram-positive bacterium Bacillus subtilis. The SPP1 tail electron microscopy (EM) reconstruction revealed that it is mainly constituted by conserved structural proteins such as the major tail proteins (gp17.1), the tape measure protein (gp18), the Distal tail protein (Dit, gp19.1), and the Tail associated lysin (gp21). A group of five small genes (22-24.1) follows in the genome but it remains to be elucidated whether their protein products belong or not to the tail. Noteworthy, an unassigned EM density accounting for ~245 kDa is present at the distal end of the SPP1 tail-tip. We report here the gp23.1 crystal structure at 1.6 A resolution, a protein that lacks sequence identity to any known protein. We found that gp23.1 forms a hexamer both in the crystal lattice and in solution as revealed by light scattering measurements. The gp23.1 hexamer does not fit well in the unassigned SPP1 tail-tip EM density and we hypothesize that this protein might act as a chaperone.


    Organizational Affiliation

    Architecture et Fonction des Macromolécules Biologiques, UMR 6098 CNRS and Universités d'Aix-Marseille I & II, Marseille, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GP23.1ABCDEF51Bacillus phage SPP1Mutation(s): 0 
Find proteins for O48468 (Bacillus phage SPP1)
Explore O48468 
Go to UniProtKB:  O48468
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.61 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.427α = 90
b = 66.902β = 90
c = 82.433γ = 90
Software Package:
Software NamePurpose
BUSTER-TNTrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-08-11
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance