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- PDB-7t64: Rabbit RyR1 disease mutant Y523S in complex with FKBP12.6 embedde... -

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Basic information

Entry
Database: PDB / ID: 7t64
TitleRabbit RyR1 disease mutant Y523S in complex with FKBP12.6 embedded in lipidic nanodisc in the closed state
Components
  • Peptidyl-prolyl cis-trans isomerase FKBP1B
  • Ryanodine receptor 1
KeywordsMEMBRANE PROTEIN / Ryanodine receptor / RyR / RyR1 / calcium channel / mutation / NTDC mutation / malignant hyperthermia / central core disease / excitation-contraction coupling
Function / homology
Function and homology information


ATP-gated ion channel activity / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / terminal cisterna / neuronal action potential propagation / ryanodine receptor complex / insulin secretion involved in cellular response to glucose stimulus ...ATP-gated ion channel activity / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / terminal cisterna / neuronal action potential propagation / ryanodine receptor complex / insulin secretion involved in cellular response to glucose stimulus / ryanodine-sensitive calcium-release channel activity / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / response to redox state / protein maturation by protein folding / ossification involved in bone maturation / 'de novo' protein folding / negative regulation of heart rate / skin development / FK506 binding / organelle membrane / positive regulation of axon regeneration / cellular response to caffeine / channel regulator activity / outflow tract morphogenesis / intracellularly gated calcium channel activity / smooth muscle contraction / response to vitamin E / toxic substance binding / voltage-gated calcium channel activity / smooth endoplasmic reticulum / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / skeletal muscle fiber development / striated muscle contraction / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / T cell proliferation / Ion homeostasis / release of sequestered calcium ion into cytosol / muscle contraction / regulation of cytosolic calcium ion concentration / calcium channel complex / sarcoplasmic reticulum membrane / cellular response to calcium ion / sarcoplasmic reticulum / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / calcium-mediated signaling / calcium ion transmembrane transport / response to hydrogen peroxide / calcium channel activity / Stimuli-sensing channels / sarcolemma / Z disc / intracellular calcium ion homeostasis / disordered domain specific binding / positive regulation of cytosolic calcium ion concentration / protein refolding / protein homotetramerization / transmembrane transporter binding / calmodulin binding / signaling receptor binding / calcium ion binding / ATP binding / identical protein binding / membrane / cytosol / cytoplasm
Similarity search - Function
Ryanodine receptor, SPRY domain 2 / : / Ryanodine receptor junctional solenoid repeat / 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, SPRY domain 2 / : / Ryanodine receptor junctional solenoid repeat / 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. / B30.2/SPRY domain superfamily / Domain in SPla and the RYanodine Receptor. / SPRY domain / FKBP-type peptidyl-prolyl cis-trans isomerase domain profile. / FKBP-type peptidyl-prolyl cis-trans isomerase domain / FKBP-type peptidyl-prolyl cis-trans isomerase / Peptidyl-prolyl cis-trans isomerase domain superfamily / Ion transport domain / Ion transport protein / EF-hand domain pair / Concanavalin A-like lectin/glucanase domain superfamily
Similarity search - Domain/homology
Ryanodine receptor 1 / Peptidyl-prolyl cis-trans isomerase FKBP1B
Similarity search - Component
Biological speciesOryctolagus cuniculus (rabbit)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4 Å
AuthorsIyer, K.A. / Hu, Y. / Murayama, T. / Samso, M.
Funding support United States, 4items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)R01 AR068431 United States
American Heart Association19POST34430178 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)U24 GM116789 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)U24 GM116790 United States
CitationJournal: Proc Natl Acad Sci U S A / Year: 2022
Title: Molecular mechanism of the severe MH/CCD mutation Y522S in skeletal ryanodine receptor (RyR1) by cryo-EM.
Authors: Kavita A Iyer / Yifan Hu / Thomas Klose / Takashi Murayama / Montserrat Samsó /
Abstract: Ryanodine receptors (RyRs) are main regulators of intracellular Ca release and muscle contraction. The Y522S mutation of RyR1 causes central core disease, a weakening myopathy, and malignant ...Ryanodine receptors (RyRs) are main regulators of intracellular Ca release and muscle contraction. The Y522S mutation of RyR1 causes central core disease, a weakening myopathy, and malignant hyperthermia, a sudden and potentially fatal response to anesthetics or heat. Y522 is in the core of the N-terminal subdomain C of RyR1 and the mechanism of how this mutation orchestrates malfunction is unpredictable for this 2-MDa ion channel, which has four identical subunits composed of 15 distinct cytoplasmic domains each. We expressed and purified the RyR1 rabbit homolog, Y523S, from HEK293 cells and reconstituted it in nanodiscs under closed and open states. The high-resolution cryogenic electron microscopic (cryo-EM) three-dimensional (3D) structures show that the phenyl ring of Tyr functions in a manner analogous to a "spacer" within an α-helical bundle. Mutation to the much smaller Ser alters the hydrophobic network within the bundle, triggering rearrangement of its α-helices with repercussions in the orientation of most cytoplasmic domains. Examining the mutation-induced readjustments exposed a series of connected α-helices acting as an ∼100 Å-long lever: One end protrudes toward the dihydropyridine receptor, its molecular activator (akin to an antenna), while the other end reaches the Ca activation site. The Y523S mutation elicits channel preactivation in the absence of any activator and full opening at 1.5 µM free Ca, increasing by ∼20-fold the potency of Ca to activate the channel compared with RyR1 wild type (WT). This study identified a preactivated pathological state of RyR1 and a long-range lever that may work as a molecular switch to open the channel.
History
DepositionDec 13, 2021Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 20, 2022Provider: repository / Type: Initial release
Revision 1.1Aug 3, 2022Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID
Revision 1.2Feb 28, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / pdbx_initial_refinement_model
Item: _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id ..._em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type

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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
E: Peptidyl-prolyl cis-trans isomerase FKBP1B
F: Peptidyl-prolyl cis-trans isomerase FKBP1B
G: Peptidyl-prolyl cis-trans isomerase FKBP1B
H: Peptidyl-prolyl cis-trans isomerase FKBP1B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,310,26112
Polymers2,309,9998
Non-polymers2624
Water00
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: 565832.562 Da / Num. of mol.: 4 / Mutation: Y523S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Oryctolagus cuniculus (rabbit) / Gene: RYR1 / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: P11716
#2: Protein
Peptidyl-prolyl cis-trans isomerase FKBP1B / PPIase FKBP1B / 12.6 kDa FK506-binding protein / FKBP-12.6 / FK506-binding protein 1B / FKBP-1B / ...PPIase FKBP1B / 12.6 kDa FK506-binding protein / FKBP-12.6 / FK506-binding protein 1B / FKBP-1B / Immunophilin FKBP12.6 / Rotamase / h-FKBP-12


Mass: 11667.305 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: FKBP1B, FKBP12.6, FKBP1L, FKBP9, OTK4
Production host: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)
References: UniProt: P68106, peptidylprolyl isomerase
#3: 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: Rabbit RyR1 disease mutant Y523S in complex with FKBP12.6 embedded in lipidic nanodisc in the closed state
Type: COMPLEX / Entity ID: #1-#2 / Source: MULTIPLE SOURCES
Molecular weightValue: 2.26 MDa / Experimental value: NO
Buffer solutionpH: 7.4
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMMOPSMOPS1
2600 mMPotassium chlorideKCl1
32 mMDithiothreitolDTT1
42 mMEGTAEGTA1
SpecimenConc.: 4.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277.15 K / Details: Blot force 2; blot for 1.0s before plunging

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 81000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 700 nm / Cs: 2.7 mm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 3.12 sec. / Electron dose: 53.69 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 2 / Num. of real images: 13171
EM imaging opticsEnergyfilter slit width: 20 eV

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Processing

EM software
IDNameVersionCategory
1cryoSPARC2.15particle selection
2Leginonimage acquisition
4cryoSPARC2.15CTF correction
7UCSF Chimeramodel fitting
8Coot0.9.5model fitting
10PHENIX1.19model refinement
11cryoSPARC2.15initial Euler assignment
12cryoSPARC2.15final Euler assignment
13cryoSPARC2.15classification
14cryoSPARC2.153D reconstruction
CTF correctionType: NONE
Particle selectionNum. of particles selected: 154814
SymmetryPoint symmetry: C4 (4 fold cyclic)
3D reconstructionResolution: 4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 141098 / Num. of class averages: 2 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model buildingPDB-ID: 6WOT

6wot


Accession code: 6WOT / Source name: PDB / Type: experimental model

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