5IW9

Structure of bacteriophage T4 gp25, sheath polymerization initiator


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.47 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the T4 baseplate and its function in triggering sheath contraction.

Taylor, N.M.Prokhorov, N.S.Guerrero-Ferreira, R.C.Shneider, M.M.Browning, C.Goldie, K.N.Stahlberg, H.Leiman, P.G.

(2016) Nature 533: 346-352

  • DOI: 10.1038/nature17971
  • Primary Citation of Related Structures:  
  • Also Cited By: 5LYE

  • PubMed Abstract: 
  • Several systems, including contractile tail bacteriophages, the type VI secretion system and R-type pyocins, use a multiprotein tubular apparatus to attach to and penetrate host cell membranes. This macromolecular machine resembles a stretched, coile ...

    Several systems, including contractile tail bacteriophages, the type VI secretion system and R-type pyocins, use a multiprotein tubular apparatus to attach to and penetrate host cell membranes. This macromolecular machine resembles a stretched, coiled spring (or sheath) wound around a rigid tube with a spike-shaped protein at its tip. A baseplate structure, which is arguably the most complex part of this assembly, relays the contraction signal to the sheath. Here we present the atomic structure of the approximately 6-megadalton bacteriophage T4 baseplate in its pre- and post-host attachment states and explain the events that lead to sheath contraction in atomic detail. We establish the identity and function of a minimal set of components that is conserved in all contractile injection systems and show that the triggering mechanism is universally conserved.


    Organizational Affiliation

    École Polytechnique Fédérale de Lausanne (EPFL), BSP-415, 1015 Lausanne, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Baseplate wedge protein gp25
A, B
131Enterobacteria phage T4Mutation(s): 0 
Gene Names: 25
Find proteins for P09425 (Enterobacteria phage T4)
Go to UniProtKB:  P09425
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.47 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.190 
  • Space Group: P 41 2 2
Unit Cell:
Length (Å)Angle (°)
a = 69.859α = 90.00
b = 69.859β = 90.00
c = 222.179γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
iMOSFLMdata reduction
SHELXCDphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
EPFLSwitzerland577

Revision History 

  • Version 1.0: 2016-05-11
    Type: Initial release
  • Version 1.1: 2016-05-25
    Type: Database references
  • Version 1.2: 2016-06-08
    Type: Database references