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- PDB-8seu: Cryo-EM Structure of RyR1 (Local Refinement of TMD) -

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Basic information

Entry
Database: PDB / ID: 8seu
TitleCryo-EM Structure of RyR1 (Local Refinement of TMD)
ComponentsRyanodine receptor 1
KeywordsTRANSPORT PROTEIN / Calcium ion channel / skeletal muscle / nucleotide / homotetramer
Function / homology
Function and homology information


ATP-gated ion channel activity / terminal cisterna / ryanodine receptor complex / ryanodine-sensitive calcium-release channel activity / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / ossification involved in bone maturation / skin development / cellular response to caffeine / intracellularly gated calcium channel activity / outflow tract morphogenesis ...ATP-gated ion channel activity / terminal cisterna / ryanodine receptor complex / ryanodine-sensitive calcium-release channel activity / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / ossification involved in bone maturation / skin development / cellular response to caffeine / intracellularly gated calcium channel activity / outflow tract morphogenesis / organelle membrane / toxic substance binding / voltage-gated calcium channel activity / skeletal muscle fiber development / release of sequestered calcium ion into cytosol / sarcoplasmic reticulum membrane / cellular response to calcium ion / sarcoplasmic reticulum / muscle contraction / calcium ion transmembrane transport / calcium channel activity / intracellular calcium ion homeostasis / disordered domain specific binding / protein homotetramerization / transmembrane transporter binding / calmodulin binding / calcium ion binding / ATP binding / membrane / identical protein binding
Similarity search - Function
: / Ryanodine receptor junctional solenoid repeat / Ryanodine receptor, SPRY domain 2 / Ryanodine Receptor TM 4-6 / Ryanodine receptor / Ryanodine receptor, SPRY domain 1 / Ryanodine receptor, SPRY domain 3 / Ryanodine Receptor TM 4-6 / Ryanodine receptor Ryr / RyR domain ...: / Ryanodine receptor junctional solenoid repeat / Ryanodine receptor, SPRY domain 2 / Ryanodine Receptor TM 4-6 / Ryanodine receptor / Ryanodine receptor, SPRY domain 1 / Ryanodine receptor, SPRY domain 3 / Ryanodine Receptor TM 4-6 / Ryanodine receptor Ryr / RyR domain / RyR/IP3 receptor binding core, RIH domain superfamily / : / RyR/IP3R Homology associated domain / Inositol 1,4,5-trisphosphate/ryanodine receptor / RIH domain / RyR and IP3R Homology associated / Inositol 1,4,5-trisphosphate/ryanodine receptor / RIH domain / MIR motif / MIR domain / MIR domain profile. / Domain in ryanodine and inositol trisphosphate receptors and protein O-mannosyltransferases / Mir domain superfamily / SPRY domain / B30.2/SPRY domain / B30.2/SPRY domain profile. / SPRY domain / B30.2/SPRY domain superfamily / Domain in SPla and the RYanodine Receptor. / Ion transport domain / Ion transport protein / EF-hand domain pair / Concanavalin A-like lectin/glucanase domain superfamily
Similarity search - Domain/homology
Ryanodine receptor 1
Similarity search - Component
Biological speciesOryctolagus cuniculus (rabbit)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsCholak, S. / Saville, J.W. / Zhu, X. / Berezuk, A.M. / Tuttle, K.S. / Haji-Ghassemi, O. / Van Petegem, F. / Subramaniam, S.
Funding support Canada, 2items
OrganizationGrant numberCountry
Canada Excellence Research Chair Award Canada
Canadian Institutes of Health Research (CIHR) Canada
CitationJournal: Structure / Year: 2023
Title: Allosteric modulation of ryanodine receptor RyR1 by nucleotide derivatives.
Authors: Spencer Cholak / James W Saville / Xing Zhu / Alison M Berezuk / Katharine S Tuttle / Omid Haji-Ghassemi / Francisco J Alvarado / Filip Van Petegem / Sriram Subramaniam /
Abstract: The coordinated release of Ca from the sarcoplasmic reticulum (SR) is critical for excitation-contraction coupling. This release is facilitated by ryanodine receptors (RyRs) that are embedded in the ...The coordinated release of Ca from the sarcoplasmic reticulum (SR) is critical for excitation-contraction coupling. This release is facilitated by ryanodine receptors (RyRs) that are embedded in the SR membrane. In skeletal muscle, activity of RyR1 is regulated by metabolites such as ATP, which upon binding increase channel open probability (P). To obtain structural insights into the mechanism of RyR1 priming by ATP, we determined several cryo-EM structures of RyR1 bound individually to ATP-γ-S, ADP, AMP, adenosine, adenine, and cAMP. We demonstrate that adenine and adenosine bind RyR1, but AMP is the smallest ATP derivative capable of inducing long-range (>170 Å) structural rearrangements associated with channel activation, establishing a structural basis for key binding site interactions that are the threshold for triggering quaternary structural changes. Our finding that cAMP also induces these structural changes and results in increased channel opening suggests its potential role as an endogenous modulator of RyR1 conductance.
History
DepositionApr 10, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 24, 2023Provider: repository / Type: Initial release
Revision 1.1May 31, 2023Group: Database references / Category: citation / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Jul 19, 2023Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Ryanodine receptor 1
B: Ryanodine receptor 1
C: Ryanodine receptor 1
D: Ryanodine receptor 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,263,8968
Polymers2,263,6354
Non-polymers2624
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
Ryanodine receptor 1 / / RYR-1 / RyR1 / Skeletal muscle calcium release channel / Skeletal muscle ryanodine receptor / ...RYR-1 / RyR1 / Skeletal muscle calcium release channel / Skeletal muscle ryanodine receptor / Skeletal muscle-type ryanodine receptor / Type 1 ryanodine receptor


Mass: 565908.625 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Oryctolagus cuniculus (rabbit) / References: UniProt: P11716
#2: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Zn
Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: RyR1 in complex with FKBP12.6Ryanodine receptor 1 / Type: COMPLEX / Entity ID: #1 / Source: MULTIPLE SOURCES
Source (natural)Organism: Oryctolagus cuniculus (rabbit)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 283.15 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 96000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM softwareName: EPU / Version: 3.3 / Category: image acquisition
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 45876 / Symmetry type: POINT

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