3KK5

Crystal structure of PBCV-1 VP54 fitted into a cryo-EM reconstruction of the virophage Sputnik


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.3 of the entry. See complete history


Literature

Structural studies of the sputnik virophage.

Sun, S.La Scola, B.Bowman, V.D.Ryan, C.M.Whitelegge, J.P.Raoult, D.Rossmann, M.G.

(2010) J Virol 84: 894-897

  • DOI: 10.1128/JVI.01957-09
  • Primary Citation of Related Structures:  
    3KK5

  • PubMed Abstract: 
  • The virophage Sputnik is a satellite virus of the giant mimivirus and is the only satellite virus reported to date whose propagation adversely affects its host virus' production. Genome sequence analysis showed that Sputnik has genes related to viruses infecting all three domains of life ...

    The virophage Sputnik is a satellite virus of the giant mimivirus and is the only satellite virus reported to date whose propagation adversely affects its host virus' production. Genome sequence analysis showed that Sputnik has genes related to viruses infecting all three domains of life. Here, we report structural studies of Sputnik, which show that it is about 740 A in diameter, has a T=27 icosahedral capsid, and has a lipid membrane inside the protein shell. Structural analyses suggest that the major capsid protein of Sputnik is likely to have a double jelly-roll fold, although sequence alignments do not show any detectable similarity with other viral double jelly-roll capsid proteins. Hence, the origin of Sputnik's capsid might have been derived from other viruses prior to its association with mimivirus.


    Organizational Affiliation

    Department of Biological Sciences, Purdue University, 915 W. State Street, West Lafayette, IN 47907-2054, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Major capsid protein
A, B, C, D, E, F, G, H, I, J, K, L, M
A, B, C, D, E, F, G, H, I, J, K, L, M
437Acanthamoeba polyphagaMutation(s): 0 
UniProt
Find proteins for P30328 (Paramecium bursaria Chlorella virus 1)
Explore P30328 
Go to UniProtKB:  P30328
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP30328
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 10.6 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: 2009-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-01-24
    Changes: Data collection, Data processing, Structure summary
  • Version 1.3: 2018-07-18
    Changes: Data collection