3JA4

RNA-dependent RNA polymerases of transcribing cypoviruses


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.80 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

Cryo-EM shows the polymerase structures and a nonspooled genome within a dsRNA virus.

Liu, H.Cheng, L.

(2015) Science 349: 1347-1350

  • DOI: 10.1126/science.aaa4938
  • Primary Citation of Related Structures:  
    3JA4, 3JA5

  • PubMed Abstract: 
  • Double-stranded RNA (dsRNA) viruses possess a segmented dsRNA genome and a number of RNA-dependent RNA polymerases (RdRps) enclosed in a capsid. Until now, the precise structures of genomes and RdRps within the capsids have been unknown. Here we report the structures of RdRps and associated RNAs within nontranscribing and transcribing cypoviruses (NCPV and TCPV, respectively), using a combination of cryo-electron microscopy (cryo-EM) and a symmetry-mismatch reconstruction method ...

    Double-stranded RNA (dsRNA) viruses possess a segmented dsRNA genome and a number of RNA-dependent RNA polymerases (RdRps) enclosed in a capsid. Until now, the precise structures of genomes and RdRps within the capsids have been unknown. Here we report the structures of RdRps and associated RNAs within nontranscribing and transcribing cypoviruses (NCPV and TCPV, respectively), using a combination of cryo-electron microscopy (cryo-EM) and a symmetry-mismatch reconstruction method. The RdRps and associated RNAs appear to exhibit a pseudo-D3 symmetric organization in both NCPV and TCPV. However, the molecular interactions between RdRps and the genomic RNA were found to differ in these states. Our work provides insight into the mechanisms of the replication and transcription in dsRNA viruses and paves a way for structural determination of lower-symmetry complexes enclosed in higher-symmetry structures.


    Organizational Affiliation

    School of Life Sciences, Tsinghua University, Beijing 100084, China. hrliu@hunnu.edu.cn lingpengcheng@mail.tsinghua.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA-dependent RNA polymeraseA1,225Bombyx mori cypovirus 1Mutation(s): 0 
Gene Names: S
EC: 2.7.7.48
UniProt
Find proteins for Q6RJR5 (Bombyx mori cytoplasmic polyhedrosis virus)
Explore Q6RJR5 
Go to UniProtKB:  Q6RJR5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6RJR5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.80 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: 2015-10-28
    Type: Initial release
  • Version 1.1: 2019-10-09
    Changes: Data collection, Database references, Other