6X34

Pig R615C RyR1 EGTA (all classes, open)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Pathological conformations of disease mutant Ryanodine Receptors revealed by cryo-EM.

Woll, K.A., Haji-Ghassemi, O., Van Petegem, F.

(2021) Nat Commun 12: 807-807

  • DOI: 10.1038/s41467-021-21141-3
  • Primary Citation of Related Structures:  
    6X32, 6X34, 6X33, 6X36, 6X35, 6W1N

  • PubMed Abstract: 

    • Ryanodine Receptors (RyRs) are massive channels that release Ca 2+ from the endoplasmic and sarcoplasmic reticulum. Hundreds of mutations are linked to malignant hyperthermia (MH), myopathies, and arrhythmias. Here, we explore the first MH mutation identified in humans by providing cryo-EM snapshots of the pig homolog, R615C, showing that it affects an interface between three solenoid regions ...

    Ryanodine Receptors (RyRs) are massive channels that release Ca 2+ from the endoplasmic and sarcoplasmic reticulum. Hundreds of mutations are linked to malignant hyperthermia (MH), myopathies, and arrhythmias. Here, we explore the first MH mutation identified in humans by providing cryo-EM snapshots of the pig homolog, R615C, showing that it affects an interface between three solenoid regions. We also show the impact of apo-calmodulin (apoCaM) and how it can induce opening by bending of the bridging solenoid, mediated by its N-terminal lobe. For R615C RyR1, apoCaM binding abolishes a pathological 'intermediate' conformation, distributing the population to a mixture of open and closed channels, both different from the structure without apoCaM. Comparisons show that the mutation primarily affects the closed state, inducing partial movements linked to channel activation. This shows that disease mutations can cause distinct pathological conformations of the RyR and facilitate channel opening by disrupting interactions between different solenoid regions.

    Organizational Affiliation: 

    University of British Columbia, Department of Biochemistry and Molecular Biology, Life Sciences Centre, Vancouver, BC, Canada. petegem@mail.ubc.ca.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Peptidyl-prolyl cis-trans isomerase FKBP1BA, C, E, G106Homo sapiensMutation(s): 0 
Gene Names: FKBP1B, FKBP12.6, FKBP1L, FKBP9, OTK4
EC: 5.2.1.8
Find proteins for P68106 (Homo sapiens)
Explore P68106 
Go to UniProtKB:  P68106
NIH Common Fund Data Resources
PHAROS:  P68106
GTEx:  ENSG00000119782
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ryanodine ReceptorB, D, F, H3716Sus scrofaMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)--

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-13
    Type: Initial release
  • Version 1.1: 2021-02-24
    Changes: Database references