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- EMDB-42769: Structure of PKA phosphorylated human RyR2-R420W in the open stat... -
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Open data
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Basic information
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Title | Structure of PKA phosphorylated human RyR2-R420W in the open state in the presence of calcium and calmodulin | |||||||||
![]() | Composite map of the Structure of PKA phosphorylated human RyR2-R420W in the open state in the presence of calcium and calmodulin | |||||||||
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![]() | calcium channel / MEMBRANE PROTEIN | |||||||||
Function / homology | ![]() junctional sarcoplasmic reticulum membrane / calcium-induced calcium release activity / sarcoplasmic reticulum calcium ion transport / establishment of protein localization to endoplasmic reticulum / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / suramin binding / regulation of SA node cell action potential / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis ...junctional sarcoplasmic reticulum membrane / calcium-induced calcium release activity / sarcoplasmic reticulum calcium ion transport / establishment of protein localization to endoplasmic reticulum / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / suramin binding / 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 / cell communication by electrical coupling involved in cardiac conduction / regulation of ventricular cardiac muscle cell action potential / 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 / cardiac muscle hypertrophy / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / regulation of cardiac muscle contraction by calcium ion signaling / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / calcium ion transport into cytosol / CaM pathway / Cam-PDE 1 activation / ryanodine-sensitive calcium-release channel activity / response to caffeine / Sodium/Calcium exchangers / Calmodulin induced events / response to redox state / : / positive regulation of cyclic-nucleotide phosphodiesterase activity / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / 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 / 'de novo' protein folding / CREB1 phosphorylation through the activation of Adenylate Cyclase / PKA activation / negative regulation of high voltage-gated calcium channel activity / CaMK IV-mediated phosphorylation of CREB / Glycogen breakdown (glycogenolysis) / negative regulation of heart rate / negative regulation of calcium ion export across plasma membrane / organelle localization by membrane tethering / CLEC7A (Dectin-1) induces NFAT activation / Activation of RAC1 downstream of NMDARs / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / presynaptic endocytosis / regulation of cardiac muscle cell action potential / response to muscle activity / negative regulation of peptidyl-threonine phosphorylation / FK506 binding / positive regulation of axon regeneration / positive regulation of ryanodine-sensitive calcium-release channel activity / channel regulator activity / regulation of cell communication by electrical coupling involved in cardiac conduction / negative regulation of ryanodine-sensitive calcium-release channel activity / Synthesis of IP3 and IP4 in the cytosol / protein kinase A regulatory subunit binding / Phase 0 - rapid depolarisation / protein kinase A catalytic subunit binding / positive regulation of the force of heart contraction / Negative regulation of NMDA receptor-mediated neuronal transmission / cellular response to caffeine / Unblocking of NMDA receptors, glutamate binding and activation / RHO GTPases activate PAKs / Ion transport by P-type ATPases / intracellularly gated calcium channel activity / Uptake and function of anthrax toxins / protein phosphatase activator activity / Regulation of MECP2 expression and activity / Long-term potentiation / regulation of ryanodine-sensitive calcium-release channel activity / Calcineurin activates NFAT / DARPP-32 events / smooth muscle contraction / : / response to vitamin E / Smooth Muscle Contraction / regulation of cardiac muscle contraction / detection of calcium ion / RHO GTPases activate IQGAPs / regulation of cytosolic calcium ion concentration / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / presynaptic cytosol / smooth endoplasmic reticulum / catalytic complex / cellular response to interferon-beta / Protein methylation / striated muscle contraction / positive regulation of heart rate / T cell proliferation / Activation of AMPK downstream of NMDARs Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.56 Å | |||||||||
![]() | Miotto MC / Marks AR | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis for ryanodine receptor type 2 leak in heart failure and arrhythmogenic disorders. Authors: Marco C Miotto / Steven Reiken / Anetta Wronska / Qi Yuan / Haikel Dridi / Yang Liu / Gunnar Weninger / Carl Tchagou / Andrew R Marks / ![]() Abstract: Heart failure, the leading cause of mortality and morbidity in the developed world, is characterized by cardiac ryanodine receptor 2 channels that are hyperphosphorylated, oxidized, and depleted of ...Heart failure, the leading cause of mortality and morbidity in the developed world, is characterized by cardiac ryanodine receptor 2 channels that are hyperphosphorylated, oxidized, and depleted of the stabilizing subunit calstabin-2. This results in a diastolic sarcoplasmic reticulum Ca leak that impairs cardiac contractility and triggers arrhythmias. Genetic mutations in ryanodine receptor 2 can also cause Ca leak, leading to arrhythmias and sudden cardiac death. Here, we solved the cryogenic electron microscopy structures of ryanodine receptor 2 variants linked either to heart failure or inherited sudden cardiac death. All are in the primed state, part way between closed and open. Binding of Rycal drugs to ryanodine receptor 2 channels reverts the primed state back towards the closed state, decreasing Ca leak, improving cardiac function, and preventing arrhythmias. We propose a structural-physiological mechanism whereby the ryanodine receptor 2 channel primed state underlies the arrhythmias in heart failure and arrhythmogenic disorders. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 245.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 24.8 KB 24.8 KB | Display Display | ![]() |
Images | ![]() | 206.9 KB | ||
Filedesc metadata | ![]() | 9.7 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 513.3 KB | Display | ![]() |
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Full document | ![]() | 512.8 KB | Display | |
Data in XML | ![]() | 8.1 KB | Display | |
Data in CIF | ![]() | 9.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8uxmMC ![]() 8uq2C ![]() 8uq3C ![]() 8uq4C ![]() 8uq5C ![]() 8uxcC ![]() 8uxeC ![]() 8uxfC ![]() 8uxgC ![]() 8uxhC ![]() 8uxiC ![]() 8uxlC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||
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Annotation | Composite map of the Structure of PKA phosphorylated human RyR2-R420W in the open state in the presence of calcium and calmodulin | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.8425 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : Complex of RyR2-R420W, Calstabin-2, and Calmodulin
+Supramolecule #1: Complex of RyR2-R420W, Calstabin-2, and Calmodulin
+Supramolecule #2: Ryanodine Receptor 2
+Supramolecule #3: Peptidyl- cis-trans isomerase FKBP1B
+Supramolecule #4: Calmodulin
+Macromolecule #1: Calmodulin-1
+Macromolecule #2: Ryanodine receptor 2
+Macromolecule #3: Peptidyl-prolyl cis-trans isomerase FKBP1B
+Macromolecule #4: CALCIUM ION
+Macromolecule #5: ZINC ION
+Macromolecule #6: ADENOSINE-5'-TRIPHOSPHATE
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 2.5 mg/mL | |||||||||||||||||||||||||||
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Buffer | pH: 7.4 Component:
Details: 0.020 mM Calmodulin was added to the final sample | |||||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Temperature | Min: 80.0 K / Max: 100.0 K |
Specialist optics | Energy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Digitization - Dimensions - Width: 5760 pixel / Digitization - Dimensions - Height: 4092 pixel / Average electron dose: 58.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.2 µm / Nominal defocus min: 0.5 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: INSILICO MODEL / In silico model: CryoSPARC ab initio |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.56 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 49606 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |