3J6J

3.6 Angstrom resolution MAVS filament generated from helical reconstruction


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.64 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Molecular Imprinting as a Signal-Activation Mechanism of the Viral RNA Sensor RIG-I.

Wu, B.Peisley, A.Tetrault, D.Li, Z.Egelman, E.H.Magor, K.E.Walz, T.Penczek, P.A.Hur, S.

(2014) Mol Cell 55: 511-523

  • DOI: 10.1016/j.molcel.2014.06.010
  • Primary Citation of Related Structures:  
    3J6J, 4P4H

  • PubMed Abstract: 
  • RIG-I activates interferon signaling pathways by promoting filament formation of the adaptor molecule, MAVS. Assembly of the MAVS filament is mediated by its CARD domain (CARD(MAVS)), and requires its interaction with the tandem CARDs of RIG-I (2CARD(RIG-I)) ...

    RIG-I activates interferon signaling pathways by promoting filament formation of the adaptor molecule, MAVS. Assembly of the MAVS filament is mediated by its CARD domain (CARD(MAVS)), and requires its interaction with the tandem CARDs of RIG-I (2CARD(RIG-I)). However, the precise nature of the interaction between 2CARD(RIG-I) and CARD(MAVS), and how this interaction leads to CARD(MAVS) filament assembly, has been unclear. Here we report a 3.6 Å electron microscopy structure of the CARD(MAVS) filament and a 3.4 Å crystal structure of the 2CARD(RIG-I):CARD(MAVS) complex, representing 2CARD(RIG-I) "caught in the act" of nucleating the CARD(MAVS) filament. These structures, together with functional analyses, show that 2CARD(RIG-I) acts as a template for the CARD(MAVS) filament assembly, by forming a helical tetrameric structure and recruiting CARD(MAVS) along its helical trajectory. Our work thus reveals that signal activation by RIG-I occurs by imprinting its helical assembly architecture on MAVS, a previously uncharacterized mechanism of signal transmission.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Program in Cellular and Molecular Medicine, Children's Hospital Boston, Boston, MA 02115, USA. Electronic address: sun.hur@childrens.harvard.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mitochondrial antiviral-signaling proteinA, B, C, D, E, F [auth G], G [auth I], H [auth L]97Homo sapiensMutation(s): 1 
Gene Names: IPS1KIAA1271MAVSVISA
UniProt & NIH Common Fund Data Resources
Find proteins for Q7Z434 (Homo sapiens)
Explore Q7Z434 
Go to UniProtKB:  Q7Z434
PHAROS:  Q7Z434
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.64 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-07-30
    Type: Initial release
  • Version 1.1: 2014-09-03
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Author supporting evidence, Data collection
  • Version 1.3: 2019-12-18
    Changes: Database references, Other