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- PDB-8dve: RyR1 in presence of IpCa-T26E phosphomimetic and activating ligands -

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Basic information

Entry
Database: PDB / ID: 8dve
TitleRyR1 in presence of IpCa-T26E phosphomimetic and activating ligands
Components
  • Calmodulin-1
  • Peptidyl-prolyl cis-trans isomerase FKBP1B
  • Ryanodine receptor 1
KeywordsMEMBRANE PROTEIN / Ryanodine receptor / Ion channel / Snake toxin / Calcin / Complex
Function / homology
Function and homology information


ATP-gated ion channel activity / : / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / terminal cisterna / ryanodine-sensitive calcium-release channel activity / ryanodine receptor complex ...ATP-gated ion channel activity / : / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / terminal cisterna / ryanodine-sensitive calcium-release channel activity / ryanodine receptor complex / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / CaM pathway / response to redox state / Cam-PDE 1 activation / ossification involved in bone maturation / Sodium/Calcium exchangers / Calmodulin induced events / negative regulation of heart rate / cellular response to caffeine / 'de novo' protein folding / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / skin development / negative regulation of high voltage-gated calcium channel activity / PKA activation / CaMK IV-mediated phosphorylation of CREB / Glycogen breakdown (glycogenolysis) / CLEC7A (Dectin-1) induces NFAT activation / FK506 binding / Activation of RAC1 downstream of NMDARs / negative regulation of ryanodine-sensitive calcium-release channel activity / organelle localization by membrane tethering / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / negative regulation of calcium ion export across plasma membrane / regulation of cardiac muscle cell action potential / organelle membrane / presynaptic endocytosis / regulation of cell communication by electrical coupling involved in cardiac conduction / Synthesis of IP3 and IP4 in the cytosol / Phase 0 - rapid depolarisation / intracellularly gated calcium channel activity / Negative regulation of NMDA receptor-mediated neuronal transmission / calcineurin-mediated signaling / smooth endoplasmic reticulum / Unblocking of NMDA receptors, glutamate binding and activation / outflow tract morphogenesis / RHO GTPases activate PAKs / regulation of ryanodine-sensitive calcium-release channel activity / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / smooth muscle contraction / Long-term potentiation / protein phosphatase activator activity / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / DARPP-32 events / Smooth Muscle Contraction / detection of calcium ion / regulation of cardiac muscle contraction / T cell proliferation / toxic substance binding / striated muscle contraction / catalytic complex / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / voltage-gated calcium channel activity / calcium channel inhibitor activity / Activation of AMPK downstream of NMDARs / presynaptic cytosol / skeletal muscle fiber development / cellular response to interferon-beta / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Protein methylation / Ion homeostasis / eNOS activation / titin binding / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / release of sequestered calcium ion into cytosol / regulation of calcium-mediated signaling / voltage-gated potassium channel complex / FCERI mediated Ca+2 mobilization / calcium channel complex / sarcoplasmic reticulum membrane / substantia nigra development / regulation of heart rate / FCGR3A-mediated IL10 synthesis / cellular response to calcium ion / Ras activation upon Ca2+ influx through NMDA receptor / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / muscle contraction / calyx of Held / adenylate cyclase activator activity / protein serine/threonine kinase activator activity / VEGFR2 mediated cell proliferation / sarcomere / regulation of cytokinesis
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. / FKBP-type peptidyl-prolyl cis-trans isomerase / FKBP-type peptidyl-prolyl cis-trans isomerase domain / B30.2/SPRY domain superfamily / FKBP-type peptidyl-prolyl cis-trans isomerase domain profile. / Domain in SPla and the RYanodine Receptor. / SPRY domain / Peptidyl-prolyl cis-trans isomerase domain superfamily / : / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / Ion transport domain / Ion transport protein / EF-hand domain pair / Concanavalin A-like lectin/glucanase domain superfamily
Similarity search - Domain/homology
ADENOSINE-5'-TRIPHOSPHATE / CAFFEINE / Calmodulin-1 / Ryanodine receptor 1 / Peptidyl-prolyl cis-trans isomerase FKBP1B
Similarity search - Component
Biological speciesHomo sapiens (human)
Oryctolagus cuniculus (rabbit)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.84 Å
AuthorsHaji-Ghassemi, O. / Van Petegm, F.
Funding support Canada, 2items
OrganizationGrant numberCountry
Canadian Institutes of Health Research (CIHR)PJT-159601 Canada
Canadian Institutes of Health Research (CIHR)MFE-381863 Canada
CitationJournal: Sci Adv / Year: 2023
Title: Cryo-EM analysis of scorpion toxin binding to Ryanodine Receptors reveals subconductance that is abolished by PKA phosphorylation.
Authors: Omid Haji-Ghassemi / Yu Seby Chen / Kellie Woll / Georgina B Gurrola / Carmen R Valdivia / Wenxuan Cai / Songhua Li / Hector H Valdivia / Filip Van Petegem /
Abstract: Calcins are peptides from scorpion venom with the unique ability to cross cell membranes, gaining access to intracellular targets. Ryanodine Receptors (RyR) are intracellular ion channels that ...Calcins are peptides from scorpion venom with the unique ability to cross cell membranes, gaining access to intracellular targets. Ryanodine Receptors (RyR) are intracellular ion channels that control release of Ca from the endoplasmic and sarcoplasmic reticulum. Calcins target RyRs and induce long-lived subconductance states, whereby single-channel currents are decreased. We used cryo-electron microscopy to reveal the binding and structural effects of imperacalcin, showing that it opens the channel pore and causes large asymmetry throughout the cytosolic assembly of the tetrameric RyR. This also creates multiple extended ion conduction pathways beyond the transmembrane region, resulting in subconductance. Phosphorylation of imperacalcin by protein kinase A prevents its binding to RyR through direct steric hindrance, showing how posttranslational modifications made by the host organism can determine the fate of a natural toxin. The structure provides a direct template for developing calcin analogs that result in full channel block, with potential to treat RyR-related disorders.
History
DepositionJul 28, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 31, 2023Provider: repository / Type: Initial release
Revision 1.1Jul 5, 2023Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _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
Revision 1.2Nov 20, 2024Group: Data collection / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_3d_fitting_list / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_3d_fitting_list.initial_refinement_model_id / _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
D: Ryanodine receptor 1
E: Peptidyl-prolyl cis-trans isomerase FKBP1B
F: Calmodulin-1
A: Ryanodine receptor 1
B: Peptidyl-prolyl cis-trans isomerase FKBP1B
C: Calmodulin-1
G: Ryanodine receptor 1
H: Peptidyl-prolyl cis-trans isomerase FKBP1B
I: Calmodulin-1
J: Ryanodine receptor 1
K: Peptidyl-prolyl cis-trans isomerase FKBP1B
L: Calmodulin-1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,380,01328
Polymers2,376,78512
Non-polymers3,22716
Water00
1


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

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Components

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Protein , 3 types, 12 molecules DAGJEBHKFCIL

#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: 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 (E. coli) / References: UniProt: P68106, peptidylprolyl isomerase
#3: Protein
Calmodulin-1


Mass: 16620.402 Da / Num. of mol.: 4 / Mutation: E32A, E68A, E105A, E141A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CALM1, CALM, CAM, CAM1 / Production host: Escherichia coli (E. coli) / References: UniProt: P0DP23

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Non-polymers , 4 types, 16 molecules

#4: Chemical
ChemComp-CFF / CAFFEINE / 3,7-DIHYDRO-1,3,7-TRIMETHYL-1H-PURINE-2,6-DIONE


Mass: 194.191 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C8H10N4O2 / Comment: medication*YM
#5: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Ca
#6: Chemical
ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Comment: ATP, energy-carrying molecule*YM
#7: Chemical
ChemComp-ZN / ZINC ION


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

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Details

Has ligand of interestN
Has protein modificationY

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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

Component
IDNameTypeEntity IDParent-IDSource
1RyR1 complex with activating ligands in open stateCOMPLEX#1-#30MULTIPLE SOURCES
2Ryanodine receptor 1COMPLEX#11NATURAL
3Peptidyl-prolyl cis-trans isomerase FKBP1B, Calmodulin-1COMPLEX#2-#31RECOMBINANT
Molecular weightValue: 2.2 MDa / Experimental value: YES
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
12Oryctolagus cuniculus (rabbit)9986
23Homo sapiens (human)9606
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.4
SpecimenConc.: 10 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/2
VitrificationCryogen name: ETHANE

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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 defocus max: 3000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)
EM imaging opticsEnergyfilter name: TFS Selectris

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Processing

EM software
IDNameVersionCategory
1cryoSPARC3.3.1particle selection
2crYOLO1.7.6.4particle selection
5cryoSPARC3.3.1CTF correction
8UCSF Chimera1.12model fitting
10cryoSPARC3.3.1initial Euler assignment
11cryoSPARC3.3.1final Euler assignment
12cryoSPARC3.3.1classification
13cryoSPARC3.3.13D reconstruction
14PHENIX1.2model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.84 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 41834 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL / Target criteria: Correlation coefficient
Atomic model buildingPDB-ID: 6M2W

6m2w


Pdb chain-ID: A / Accession code: 6M2W / Source name: PDB / Type: experimental model

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