3JB1

Atomic model of cytoplasmic polyhedrosis virus with SAM


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 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

A putative ATPase mediates RNA transcription and capping in a dsRNA virus.

Yu, X.Jiang, J.Sun, J.Zhou, Z.H.

(2015) Elife 4: e07901-e07901

  • DOI: https://doi.org/10.7554/eLife.07901
  • Primary Citation of Related Structures:  
    3JAY, 3JAZ, 3JB0, 3JB1, 3JB2, 3JB3

  • PubMed Abstract: 

    mRNA transcription in dsRNA viruses is a highly regulated process but the mechanism of this regulation is not known. Here, by nucleoside triphosphatase (NTPase) assay and comparisons of six high-resolution (2.9-3.1 Å) cryo-electron microscopy structures of cytoplasmic polyhedrosis virus with bound ligands, we show that the large sub-domain of the guanylyltransferase (GTase) domain of the turret protein (TP) also has an ATP-binding site and is likely an ATPase. S-adenosyl-L-methionine (SAM) acts as a signal and binds the methylase-2 domain of TP to induce conformational change of the viral capsid, which in turn activates the putative ATPase. ATP binding/hydrolysis leads to an enlarged capsid for efficient mRNA synthesis, an open GTase domain for His217-mediated guanylyl transfer, and an open methylase-1 domain for SAM binding and methyl transfer. Taken together, our data support a role of the putative ATPase in mediating the activation of mRNA transcription and capping within the confines of the virus.


  • Organizational Affiliation

    Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Structural protein VP31,058Bombyx mori cypovirus 1Mutation(s): 0 
UniProt
Find proteins for Q914N6 (Bombyx mori cytoplasmic polyhedrosis virus)
Explore Q914N6 
Go to UniProtKB:  Q914N6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ914N6
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein VP1
B, C
1,333Bombyx mori cypovirus 1Mutation(s): 0 
UniProt
Find proteins for Q6TS43 (Bombyx mori cytoplasmic polyhedrosis virus)
Explore Q6TS43 
Go to UniProtKB:  Q6TS43
Entity Groups  
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UniProt GroupQ6TS43
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Viral structural protein 5
D, E
448Bombyx mori cypovirus 1Mutation(s): 0 
UniProt
Find proteins for C6K2M8 (Bombyx mori cytoplasmic polyhedrosis virus)
Explore C6K2M8 
Go to UniProtKB:  C6K2M8
Entity Groups  
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UniProt GroupC6K2M8
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SAM
Query on SAM

Download Ideal Coordinates CCD File 
F [auth A]S-ADENOSYLMETHIONINE
C15 H22 N6 O5 S
MEFKEPWMEQBLKI-FCKMPRQPSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONIMIRS

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-08-12
    Type: Initial release
  • Version 1.1: 2016-11-02
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Data collection
  • Version 1.3: 2024-02-21
    Changes: Data collection, Database references, Derived calculations