6X32

Wt pig RyR1 in complex with apoCaM, EGTA condition (class 1 and 2, closed)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


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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:  
    6W1N, 6X32, 6X34, 6X33, 6X36, 6X35

  • 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 FKBP1B ADGJ110Homo sapiensMutation(s): 0 
Gene Names: FKBP1BFKBP12.6FKBP1LFKBP9OTK4
EC: 5.2.1.8
Find proteins for P68106 (Homo sapiens)
Explore P68106 
Go to UniProtKB:  P68106
NIH Common Fund Data Resources
PHAROS:  P68106
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ryanodine Receptor BEHK3800Sus scrofaMutation(s): 0 
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Calmodulin-1 CFIL146Homo sapiensMutation(s): 0 
Gene Names: CALM1CALMCAMCAM1
Find proteins for P0DP23 (Homo sapiens)
Explore P0DP23 
Go to UniProtKB:  P0DP23
NIH Common Fund Data Resources
PHAROS:  P0DP23
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 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