Structure of the ryanodine receptor at resolution of 8.5 A in partially open state

Experimental Data Snapshot

  • Resolution: 8.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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Architecture and Conformational Switch Mechanism of the Ryanodine Receptor.

Efremov, R.G.Leitner, A.Aebersold, R.Raunser, S.

(2015) Nature 517: 39

  • DOI: https://doi.org/10.1038/nature13916
  • Primary Citation of Related Structures:  
    4UWA, 4UWE

  • PubMed Abstract: 

    Muscle contraction is initiated by the release of calcium (Ca(2+)) from the sarcoplasmic reticulum into the cytoplasm of myocytes through ryanodine receptors (RyRs). RyRs are homotetrameric channels with a molecular mass of more than 2.2 megadaltons that are regulated by several factors, including ions, small molecules and proteins. Numerous mutations in RyRs have been associated with human diseases. The molecular mechanism underlying the complex regulation of RyRs is poorly understood. Using electron cryomicroscopy, here we determine the architecture of rabbit RyR1 at a resolution of 6.1 Å. We show that the cytoplasmic moiety of RyR1 contains two large α-solenoid domains and several smaller domains, with folds suggestive of participation in protein-protein interactions. The transmembrane domain represents a chimaera of voltage-gated sodium and pH-activated ion channels. We identify the calcium-binding EF-hand domain and show that it functions as a conformational switch allosterically gating the channel.

  • Organizational Affiliation

    1] Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, 44227 Dortmund, Germany [2] Structural Biology Research Center, Vlaams Instituut voor Biotechnologie (VIB), 1050 Brussels, Belgium [3] Structural Biology Brussels, Vrije Universiteit Brussel (VUB), 1050 Brussels, Belgium.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
5,037Oryctolagus cuniculusMutation(s): 0 
Membrane Entity: Yes 
Find proteins for P11716 (Oryctolagus cuniculus)
Explore P11716 
Go to UniProtKB:  P11716
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP11716
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 8.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-10
    Type: Initial release
  • Version 1.1: 2014-12-17
    Changes: Database references
  • Version 1.2: 2015-01-21
    Changes: Database references
  • Version 1.3: 2017-08-30
    Changes: Data collection
  • Version 1.4: 2024-05-08
    Changes: Data collection, Database references, Derived calculations, Refinement description