Biological Assembly 1  

Global Symmetry: Helical - H  (3D View)
Global Stoichiometry: Homo 21-mer - A21 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 248.16 kDa 
• Atom Count: 17,430 
• Modelled Residue Count: 2,142 
• Deposited Residue Count: 2,142 
• Unique protein chains: 1

 2MS7

High-resolution solid-state NMR structure of the helical signal transduction filament MAVS CARD

• PDB DOI:  https://doi.org/10.2210/pdb2MS7/pdb
• BMRB: 25076

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-07-25 Released: 2015-09-02 
• Deposition Author(s): He, L., Bardiaux, B., Spehr, J., Luehrs, T., Ritter, C.

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Experimental Data Snapshot

• Method: SOLID-STATE NMR
• Conformers Calculated: 500 
• Conformers Submitted: 15 
• Selection Criteria: structures with the lowest energy 

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 U S A 113: E272-E281

• PubMed: 26733681 
• DOI: https://doi.org/10.1073/pnas.1513119113
• Primary Citation of Related Structures:  
  2MS7, 2MS8


• 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 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.

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Organizational Affiliation: 

Laboratory for Macromolecular Interactions, Helmholtz Centre for Infection Research, 38124 Braunschweig, Germany; [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Mitochondrial antiviral-signaling protein	A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U	102	Homo sapiens	Mutation(s): 0  Gene Names: MAVS, IPS1, KIAA1271, VISA
UniProt & NIH Common Fund Data Resources
Find proteins for Q7Z434 (Homo sapiens) Explore Q7Z434  Go to UniProtKB:  Q7Z434
PHAROS:  Q7Z434

Experimental Data & Validation

Experimental Data

• Method: SOLID-STATE NMR
• Conformers Calculated: 500 
• Conformers Submitted: 15 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-09-02 
Deposition Author(s): He, L., Bardiaux, B., Spehr, J., Luehrs, T., Ritter, C.

Revision History  

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