6UZC

Portal vertex structure of bacteriophage T4

  • Classification: VIRUS
  • Organism(s): Escherichia virus T4
  • Mutation(s): No 

  • Deposited: 2019-11-14 Released: 2020-04-29 
  • Deposition Author(s): Fang, Q., Fokine, A., Rao, V.B.
  • Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural morphing in a symmetry-mismatched viral vertex.

Fang, Q.Tang, W.C.Tao, P.Mahalingam, M.Fokine, A.Rossmann, M.G.Rao, V.B.

(2020) Nat Commun 11: 1713-1713

  • DOI: 10.1038/s41467-020-15575-4
  • Primary Citation of Related Structures:  
    6UZC

  • PubMed Abstract: 
  • Large biological structures are assembled from smaller, often symmetric, sub-structures. However, asymmetry among sub-structures is fundamentally important for biological function. An extreme form of asymmetry, a 12-fold-symmetric dodecameric portal complex inserted into a 5-fold-symmetric capsid vertex, is found in numerous icosahedral viruses, including tailed bacteriophages, herpesviruses, and archaeal viruses ...

    Large biological structures are assembled from smaller, often symmetric, sub-structures. However, asymmetry among sub-structures is fundamentally important for biological function. An extreme form of asymmetry, a 12-fold-symmetric dodecameric portal complex inserted into a 5-fold-symmetric capsid vertex, is found in numerous icosahedral viruses, including tailed bacteriophages, herpesviruses, and archaeal viruses. This vertex is critical for driving capsid assembly, DNA packaging, tail attachment, and genome ejection. Here, we report the near-atomic in situ structure of the symmetry-mismatched portal vertex from bacteriophage T4. Remarkably, the local structure of portal morphs to compensate for symmetry-mismatch, forming similar interactions in different capsid environments while maintaining strict symmetry in the rest of the structure. This creates a unique and unusually dynamic symmetry-mismatched vertex that is central to building an infectious virion.


    Organizational Affiliation

    Department of Biology, The Catholic University of America, Washington, DC, 20064, USA. rao@cua.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Major capsid proteinABCDabcdABCDabcdefghijklmnopqrstuvwxyz
521Escherichia virus T4Mutation(s): 0 
Gene Names: gp23
Find proteins for P04535 (Enterobacteria phage T4)
Explore P04535 
Go to UniProtKB:  P04535
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Portal proteinEFGHIJKLEFGHIJKLMNOP
524Escherichia virus T4Mutation(s): 0 
Gene Names: 20
Find proteins for P13334 (Enterobacteria phage T4)
Explore P13334 
Go to UniProtKB:  P13334
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAI081726

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-29
    Type: Initial release
  • Version 1.1: 2020-05-06
    Changes: Database references