1P5V

X-ray structure of the Caf1M:Caf1 chaperone:subunit preassembly complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and Biogenesis of the Capsular F1 Antigen from Yersinia pestis. Preserved Folding Energy Drives Fiber Formation

Zavialov, A.V.Berglund, J.Pudney, A.F.Fooks, L.J.Ibrahim, T.M.MacIntyre, S.Knight, S.D.

(2003) Cell 113: 587-596

  • Primary Citation of Related Structures:  1P5U

  • PubMed Abstract: 
  • Most gram-negative pathogens express fibrous adhesive virulence organelles that mediate targeting to the sites of infection. The F1 capsular antigen from the plague pathogen Yersinia pestis consists of linear fibers of a single subunit (Caf1) and ser ...

    Most gram-negative pathogens express fibrous adhesive virulence organelles that mediate targeting to the sites of infection. The F1 capsular antigen from the plague pathogen Yersinia pestis consists of linear fibers of a single subunit (Caf1) and serves as a prototype for nonpilus organelles assembled via the chaperone/usher pathway. Genetic data together with high-resolution X-ray structures corresponding to snapshots of the assembly process reveal the structural basis of fiber formation. Comparison of chaperone bound Caf1 subunit with the subunit in the fiber reveals a novel type of conformational change involving the entire hydrophobic core of the protein. The observed conformational change suggests that the chaperone traps a high-energy folding intermediate of Caf1. A model is proposed in which release of the subunit allows folding to be completed, driving fiber formation.


    Related Citations: 
    • Overexpression, purification, crystallization and preliminary X-ray diffraction analysis of the F1 antigen Caf1MCaf1 chaperonesubunit pre-assembly complex from Yersinia pestis
      Zavialov, A.,Berglund, J.,Knight, S.D.
      (2003) Acta Crystallogr.,Sect.D 59: 359
    • Donor strand complementation mechanism in the biogenesis of non-pilus systems
      Zavialov, A.V.,Kersley, J.,Korpela, T.,Zav'yalov, V.P.,MacIntyre, S.,Knight, S.D.
      (2002) Mol.Microbiol. 45: 983


    Organizational Affiliation

    Department of Molecular Biosciences/Structural Biology, Uppsala Biomedical Center, Swedish University of Agricultural Sciences, Box 590, SE-751 24 Uppsala, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Chaperone protein Caf1M
A
235Yersinia pestisGene Names: caf1M
Find proteins for P26926 (Yersinia pestis)
Go to UniProtKB:  P26926
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
F1 capsule antigen
B
147Yersinia pestisGene Names: caf1
Find proteins for P26948 (Yersinia pestis)
Go to UniProtKB:  P26948
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.198 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 36.000α = 90.00
b = 69.230β = 92.96
c = 69.110γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
CCP4data scaling
SHARPphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-06-24
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance