+Open data
-Basic information
Entry | Database: PDB / ID: 6jgz | ||||||
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Title | Structure of RyR2 (F/P/Ca2+ dataset) | ||||||
Components |
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Keywords | MEMBRANE PROTEIN / cryo-EM | ||||||
Function / homology | Function and homology information positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of release of sequestered calcium ion into cytosol / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / cell communication by electrical coupling involved in cardiac conduction / response to redox state / protein maturation by protein folding / 'de novo' protein folding ...positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of release of sequestered calcium ion into cytosol / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / cell communication by electrical coupling involved in cardiac conduction / response to redox state / protein maturation by protein folding / 'de novo' protein folding / negative regulation of heart rate / negative regulation of phosphoprotein phosphatase activity / FK506 binding / positive regulation of axon regeneration / : / smooth muscle contraction / negative regulation of ryanodine-sensitive calcium-release channel activity / response to vitamin E / calcium channel inhibitor activity / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / protein peptidyl-prolyl isomerization / T cell proliferation / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / release of sequestered calcium ion into cytosol / regulation of ryanodine-sensitive calcium-release channel activity / Ion homeostasis / sarcoplasmic reticulum membrane / calcium channel complex / regulation of cytosolic calcium ion concentration / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / response to hydrogen peroxide / Stimuli-sensing channels / Z disc / positive regulation of cytosolic calcium ion concentration / protein refolding / transmembrane transporter binding / signaling receptor binding / membrane / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | Homo sapiens (human) Sus scrofa (pig) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.6 Å | ||||||
Authors | Chi, X.M. / Gong, D.S. / Ren, K. / Zhou, G.W. / Huang, G.X.Y. / Lei, J.L. / Zhou, Q. / Yan, N. | ||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2019 Title: Molecular basis for allosteric regulation of the type 2 ryanodine receptor channel gating by key modulators. Authors: Ximin Chi / Deshun Gong / Kang Ren / Gewei Zhou / Gaoxingyu Huang / Jianlin Lei / Qiang Zhou / Nieng Yan / Abstract: The type 2 ryanodine receptor (RyR2) is responsible for releasing Ca from the sarcoplasmic reticulum of cardiomyocytes, subsequently leading to muscle contraction. Here, we report 4 cryo-electron ...The type 2 ryanodine receptor (RyR2) is responsible for releasing Ca from the sarcoplasmic reticulum of cardiomyocytes, subsequently leading to muscle contraction. Here, we report 4 cryo-electron microscopy (cryo-EM) structures of porcine RyR2 bound to distinct modulators that, together with our published structures, provide mechanistic insight into RyR2 regulation. Ca alone induces a contraction of the central domain that facilitates the dilation of the S6 bundle but is insufficient to open the pore. The small-molecule agonist PCB95 helps Ca to overcome the barrier for opening. FKBP12.6 induces a relaxation of the central domain that decouples it from the S6 bundle, stabilizing RyR2 in a closed state even in the presence of Ca and PCB95. Although the channel is open when PCB95 is replaced by caffeine and adenosine 5'-triphosphate (ATP), neither of the modulators alone can sufficiently counter the antagonistic effect to open the channel. Our study marks an important step toward mechanistic understanding of the sophisticated regulation of this key channel whose aberrant activity engenders life-threatening cardiac disorders. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6jgz.cif.gz | 2.4 MB | Display | PDBx/mmCIF format |
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PDB format | pdb6jgz.ent.gz | Display | PDB format | |
PDBx/mmJSON format | 6jgz.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/jg/6jgz ftp://data.pdbj.org/pub/pdb/validation_reports/jg/6jgz | HTTPS FTP |
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-Related structure data
Related structure data | 9824MC 9823C 9825C 9826C 6jg3C 6jh6C 6jhnC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
#1: Protein | Mass: 11798.501 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 #2: Protein | Mass: 564905.625 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) #3: Chemical | ChemComp-ZN / |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: RyR2 in complex with FKBP12.6Ryanodine receptor 2 / Type: COMPLEX / Entity ID: #1-#2 / Source: NATURAL |
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Source (natural) | Organism: Sus scrofa (pig) |
Buffer solution | pH: 7.4 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELDBright-field microscopy |
Image recording | Electron dose: 48.6 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||
Symmetry | Point symmetry: C4 (4 fold cyclic) | ||||||||||||||||
3D reconstruction | Resolution: 4.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 60287 / Symmetry type: POINT |