2XVR

Phage T7 empty mature head shell


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.8 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Molecular Rearrangements Involved in the Capsid Shell Maturation of Bacteriophage T7.

Ionel, A.Velazquez-Muriel, J.A.Luque, D.Cuervo, A.Caston, J.R.Valpuesta, J.M.Martin-Benito, J.Carrascosa, J.L.

(2011) J.Biol.Chem. 286: 234

  • DOI: 10.1074/jbc.M110.187211
  • Primary Citation of Related Structures:  3IZG

  • PubMed Abstract: 
  • Maturation of dsDNA bacteriophages involves assembling the virus prohead from a limited set of structural components followed by rearrangements required for the stability that is necessary for infecting a host under challenging environmental conditio ...

    Maturation of dsDNA bacteriophages involves assembling the virus prohead from a limited set of structural components followed by rearrangements required for the stability that is necessary for infecting a host under challenging environmental conditions. Here, we determine the mature capsid structure of T7 at 1 nm resolution by cryo-electron microscopy and compare it with the prohead to reveal the molecular basis of T7 shell maturation. The mature capsid presents an expanded and thinner shell, with a drastic rearrangement of the major protein monomers that increases in their interacting surfaces, in turn resulting in a new bonding lattice. The rearrangements include tilting, in-plane rotation, and radial expansion of the subunits, as well as a relative bending of the A- and P-domains of each subunit. The unique features of this shell transformation, which does not employ the accessory proteins, inserted domains, or molecular interactions observed in other phages, suggest a simple capsid assembling strategy that may have appeared early in the evolution of these viruses.


    Organizational Affiliation

    Department of Macromolecular Structure, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Darwin 3, Cantoblanco, 28049 Madrid, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MAJOR CAPSID PROTEIN 10A
A, B, C, D, E, F, G
345Enterobacteria phage T7N/A
Find proteins for P19726 (Enterobacteria phage T7)
Go to UniProtKB:  P19726
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.8 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-12-01
    Type: Initial release
  • Version 1.1: 2012-03-21
    Type: Other, Version format compliance
  • Version 1.2: 2013-03-20
    Type: Other, Refinement description
  • Version 1.3: 2017-08-30
    Type: Data collection