1OQV

Structure of TcpA, the Type IV pilin subunit from the toxin co-regulated pilus of Vibrio cholerae classical biotype


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.174 
  • R-Value Work: 0.116 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Type IV Pilin Structure and Assembly: X-Ray and EM Analyses of Vibrio cholerae Toxin-Coregulated Pilus and Pseudomonas aeruginosa PAK Pilin

Craig, L.Taylor, R.K.Pique, M.E.Adair, B.D.Arvai, A.S.Singh, M.Lloyd, S.J.Shin, D.S.Getzoff, E.D.Yeager, M.Forest, K.T.Tainer, J.A.

(2003) Mol.Cell 11: 1139-1150

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Pilin assembly into type IV pili is required for virulence by bacterial pathogens that cause diseases such as cholera, pneumonia, gonorrhea, and meningitis. Crystal structures of soluble, N-terminally truncated pilin from Vibrio cholera toxin-coregul ...

    Pilin assembly into type IV pili is required for virulence by bacterial pathogens that cause diseases such as cholera, pneumonia, gonorrhea, and meningitis. Crystal structures of soluble, N-terminally truncated pilin from Vibrio cholera toxin-coregulated pilus (TCP) and full-length PAK pilin from Pseudomonas aeruginosa reveal a novel TCP fold, yet a shared architecture for the type IV pilins. In each pilin subunit a conserved, extended, N-terminal alpha helix wrapped by beta strands anchors the structurally variable globular head. Inside the assembled pilus, characterized by cryo-electron microscopy and crystallography, the extended hydrophobic alpha helices make multisubunit contacts to provide mechanical strength and flexibility. Outside, distinct interactions of adaptable heads contribute surface variation for specificity of pilus function in antigenicity, motility, adhesion, and colony formation.


    Organizational Affiliation

    Department of Molecular Biology and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
toxin-coregulated pilus subunit
A, B, C
192Vibrio choleraeMutation(s): 0 
Gene Names: tcpA
Find proteins for P23024 (Vibrio cholerae)
Go to UniProtKB:  P23024
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.174 
  • R-Value Work: 0.116 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 157.317α = 90.00
b = 157.317β = 90.00
c = 35.719γ = 120.00
Software Package:
Software NamePurpose
SHELXL-97refinement
CCP4data scaling
SCALAdata scaling
MOSFLMdata reduction
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-06-03
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance