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- PDB-7u9z: Structure of PKA phosphorylated human RyR2-R2474S in the open state -
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Open data
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Basic information
Entry | Database: PDB / ID: 7u9z | ||||||
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Title | Structure of PKA phosphorylated human RyR2-R2474S in the open state | ||||||
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![]() | MEMBRANE PROTEIN / calcium channel | ||||||
Function / homology | ![]() junctional sarcoplasmic reticulum membrane / suramin binding / establishment of protein localization to endoplasmic reticulum / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / regulation of SA node cell action potential / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / regulation of AV node cell action potential / calcium-induced calcium release activity ...junctional sarcoplasmic reticulum membrane / suramin binding / establishment of protein localization to endoplasmic reticulum / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / regulation of SA node cell action potential / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / regulation of AV node cell action potential / calcium-induced calcium release activity / sarcoplasmic reticulum calcium ion transport / cell communication by electrical coupling involved in cardiac conduction / ventricular cardiac muscle cell action potential / regulation of ventricular cardiac muscle cell action potential / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / embryonic heart tube morphogenesis / negative regulation of insulin secretion involved in cellular response to glucose stimulus / cardiac muscle hypertrophy / negative regulation of release of sequestered calcium ion into cytosol / ryanodine-sensitive calcium-release channel activity / regulation of cardiac muscle contraction by calcium ion signaling / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / response to muscle activity / calcium ion transport into cytosol / response to caffeine / response to redox state / protein maturation by protein folding / 'de novo' protein folding / negative regulation of heart rate / positive regulation of heart rate / FK506 binding / positive regulation of axon regeneration / cellular response to caffeine / protein kinase A regulatory subunit binding / channel regulator activity / intracellularly gated calcium channel activity / protein kinase A catalytic subunit binding / positive regulation of the force of heart contraction / detection of calcium ion / smooth muscle contraction / regulation of cardiac muscle contraction / smooth endoplasmic reticulum / response to vitamin E / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / striated muscle contraction / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / T cell proliferation / cardiac muscle contraction / release of sequestered calcium ion into cytosol / Ion homeostasis / regulation of cytosolic calcium ion concentration / sarcoplasmic reticulum membrane / calcium channel complex / cellular response to epinephrine stimulus / response to muscle stretch / regulation of heart rate / sarcoplasmic reticulum / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / establishment of localization in cell / calcium-mediated signaling / response to hydrogen peroxide / calcium channel activity / Stimuli-sensing channels / sarcolemma / Z disc / intracellular calcium ion homeostasis / calcium ion transport / positive regulation of cytosolic calcium ion concentration / protein refolding / transmembrane transporter binding / response to hypoxia / calmodulin binding / signaling receptor binding / calcium ion binding / enzyme binding / protein-containing complex / identical protein binding / membrane / plasma membrane / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.29 Å | ||||||
![]() | Miotto, M.C. / Marks, A.R. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Structural analyses of human ryanodine receptor type 2 channels reveal the mechanisms for sudden cardiac death and treatment. Authors: Marco C Miotto / Gunnar Weninger / Haikel Dridi / Qi Yuan / Yang Liu / Anetta Wronska / Zephan Melville / Leah Sittenfeld / Steven Reiken / Andrew R Marks / ![]() Abstract: Ryanodine receptor type 2 (RyR2) mutations have been linked to an inherited form of exercise-induced sudden cardiac death called catecholaminergic polymorphic ventricular tachycardia (CPVT). CPVT ...Ryanodine receptor type 2 (RyR2) mutations have been linked to an inherited form of exercise-induced sudden cardiac death called catecholaminergic polymorphic ventricular tachycardia (CPVT). CPVT results from stress-induced sarcoplasmic reticular Ca leak via the mutant RyR2 channels during diastole. We present atomic models of human wild-type (WT) RyR2 and the CPVT mutant RyR2-R2474S determined by cryo-electron microscopy with overall resolutions in the range of 2.6 to 3.6 Å, and reaching local resolutions of 2.25 Å, unprecedented for RyR2 channels. Under nonactivating conditions, the RyR2-R2474S channel is in a "primed" state between the closed and open states of WT RyR2, rendering it more sensitive to activation that results in stress-induced Ca leak. The Rycal drug ARM210 binds to RyR2-R2474S, reverting the primed state toward the closed state. Together, these studies provide a mechanism for CPVT and for the therapeutic actions of ARM210. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 2.9 MB | Display | ![]() |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 26410MC ![]() 7u9qC ![]() 7u9rC ![]() 7u9tC ![]() 7u9xC ![]() 7ua1C ![]() 7ua3C ![]() 7ua4C ![]() 7ua5C ![]() 7ua9C M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 2 types, 8 molecules ABCDEFGH
#1: Protein | Mass: 565216.000 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #2: Protein | Mass: 11798.501 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Non-polymers , 4 types, 20 molecules ![](data/chem/img/ZN.gif)
![](data/chem/img/ATP.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/XAN.gif)
![](data/chem/img/ATP.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/XAN.gif)
#3: Chemical | ChemComp-ZN / #4: Chemical | ChemComp-ATP / #5: Chemical | ChemComp-CA / #6: Chemical | ChemComp-XAN / |
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-Details
Has ligand of interest | Y |
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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 |
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Sample preparation
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Source (recombinant) |
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Buffer solution | pH: 7.4 Details: Xanthine was made fresh to avoid aggregation. Xanthine stock solution was 10 mM in NaOH 0.5 N. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 2.2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 1200 nm / Nominal defocus min: 400 nm |
Image recording | Electron dose: 58 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
EM software | Name: cryoSPARC / Category: CTF correction |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3D reconstruction | Resolution: 3.29 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 41126 / Symmetry type: POINT |
Atomic model building | PDB-ID: 7U9X |