Mature capsid of bacteriophage phiRSA1

Experimental Data Snapshot

  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.1 of the entry. See complete history


High Resolution Structure of the Mature Capsid of Ralstonia solanacearum Bacteriophage phi RSA1 by Cryo-Electron Microscopy.

Effantin, G.Fujiwara, A.Kawasaki, T.Yamada, T.Schoehn, G.

(2021) Int J Mol Sci 22

  • DOI: https://doi.org/10.3390/ijms222011053
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The ϕRSA1 bacteriophage has been isolated from Ralstonia solanacearum , a gram negative bacteria having a significant economic impact on many important crops. We solved the three-dimensional structure of the ϕRSA1 mature capsid to 3.9 Å resolution by cryo-electron microscopy. The capsid shell, that contains the 39 kbp of dsDNA genome, has an icosahedral symmetry characterized by an unusual triangulation number of T = 7, dextro . The ϕRSA1 capsid is composed solely of the polymerization of the major capsid protein, gp8, which exhibits the typical "Johnson" fold first characterized in E. coli bacteriophage HK97. As opposed to the latter, the ϕRSA1 mature capsid is not stabilized by covalent crosslinking between its subunits, nor by the addition of a decoration protein. We further describe the molecular interactions occurring between the subunits of the ϕRSA1 capsid and their relationships with the other known bacteriophages.

  • Organizational Affiliation

    CEA, CNRS, IBS, Université Grenoble Alpes, F-38000 Grenoble, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
p2 family phage major capsid protein339Aresaunavirus RSA1Mutation(s): 0 
Find proteins for A4PE30 (Ralstonia phage RSA1)
Explore A4PE30 
Go to UniProtKB:  A4PE30
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA4PE30
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-11-17
    Type: Initial release
  • Version 1.1: 2024-07-17
    Changes: Data collection