2MS8

Solution NMR structure of MAVS CARD


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure determination of helical filaments by solid-state NMR spectroscopy.

He, L.Bardiaux, B.Ahmed, M.Spehr, J.Konig, R.Lunsdorf, H.Rand, U.Luhrs, T.Ritter, C.

(2016) Proc.Natl.Acad.Sci.USA 113: E272-E281

  • DOI: 10.1073/pnas.1513119113
  • Primary Citation of Related Structures:  2MS7

  • PubMed Abstract: 
  • The controlled formation of filamentous protein complexes plays a crucial role in many biological systems and represents an emerging paradigm in signal transduction. The mitochondrial antiviral signaling protein (MAVS) is a central signal transductio ...

    The controlled formation of filamentous protein complexes plays a crucial role in many biological systems and represents an emerging paradigm in signal transduction. The mitochondrial antiviral signaling protein (MAVS) is a central signal transduction hub in innate immunity that is activated by a receptor-induced conversion into helical superstructures (filaments) assembled from its globular caspase activation and recruitment domain. Solid-state NMR (ssNMR) spectroscopy has become one of the most powerful techniques for atomic resolution structures of protein fibrils. However, for helical filaments, the determination of the correct symmetry parameters has remained a significant hurdle for any structural technique and could thus far not be precisely derived from ssNMR data. Here, we solved the atomic resolution structure of helical MAVS(CARD) filaments exclusively from ssNMR data. We present a generally applicable approach that systematically explores the helical symmetry space by efficient modeling of the helical structure restrained by interprotomer ssNMR distance restraints. Together with classical automated NMR structure calculation, this allowed us to faithfully determine the symmetry that defines the entire assembly. To validate our structure, we probed the protomer arrangement by solvent paramagnetic resonance enhancement, analysis of chemical shift differences relative to the solution NMR structure of the monomer, and mutagenesis. We provide detailed information on the atomic contacts that determine filament stability and describe mechanistic details on the formation of signaling-competent MAVS filaments from inactive monomers.


    Organizational Affiliation

    Laboratory for Macromolecular Interactions, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mitochondrial antiviral-signaling protein
A
102Homo sapiensGene Names: MAVS (IPS1, KIAA1271, VISA)
Find proteins for Q7Z434 (Homo sapiens)
Go to Gene View: MAVS
Go to UniProtKB:  Q7Z434
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-09-02
    Type: Initial release
  • Version 1.1: 2016-02-03
    Type: Database references