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Yorodumi- EMDB-42768: Structure of PKA phosphorylated human RyR2-R420W in the primed st... -
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Basic information
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| Title | Structure of PKA phosphorylated human RyR2-R420W in the primed state in the presence of calcium and calmodulin | |||||||||
Map data | Composite map of the Structure of PKA phosphorylated human RyR2-R420W in the primed state in the presence of calcium and calmodulin | |||||||||
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Keywords | calcium channel / MEMBRANE PROTEIN | |||||||||
| Function / homology | Function and homology informationjunctional sarcoplasmic reticulum membrane / 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 / calcium-induced calcium release activity / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / suramin binding / regulation of AV node cell action potential ...junctional sarcoplasmic reticulum membrane / 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 / calcium-induced calcium release activity / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / suramin binding / regulation of AV node cell action potential / regulation of SA 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 / 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 / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / calcium ion transport into cytosol / insulin secretion involved in cellular response to glucose stimulus / ryanodine-sensitive calcium-release channel activity / CaM pathway / regulation of cardiac muscle contraction by calcium ion signaling / response to caffeine / Cam-PDE 1 activation / Sodium/Calcium exchangers / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / response to redox state / Calmodulin induced events / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / 'de novo' protein folding / negative regulation of heart rate / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / cellular response to caffeine / CaMK IV-mediated phosphorylation of CREB / PKA activation / negative regulation of high voltage-gated calcium channel activity / Glycogen breakdown (glycogenolysis) / CLEC7A (Dectin-1) induces NFAT activation / 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 / FK506 binding / negative regulation of calcium ion export across plasma membrane / regulation of cardiac muscle cell action potential / response to muscle activity / presynaptic endocytosis / protein kinase A regulatory subunit binding / Synthesis of IP3 and IP4 in the cytosol / protein kinase A catalytic subunit binding / regulation of cell communication by electrical coupling involved in cardiac conduction / positive regulation of the force of heart contraction / Phase 0 - rapid depolarisation / calcineurin-mediated signaling / Negative regulation of NMDA receptor-mediated neuronal transmission / Unblocking of NMDA receptors, glutamate binding and activation / intracellularly gated calcium channel activity / smooth endoplasmic reticulum / RHO GTPases activate PAKs / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / regulation of ryanodine-sensitive calcium-release channel activity / Long-term potentiation / protein phosphatase activator activity / smooth muscle contraction / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / DARPP-32 events / Smooth Muscle Contraction / detection of calcium ion / catalytic complex / regulation of cardiac muscle contraction / regulation of cytosolic calcium ion concentration / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / T cell proliferation / positive regulation of heart rate / cellular response to interferon-beta / Protein methylation / calcium channel inhibitor activity / Activation of AMPK downstream of NMDARs / presynaptic cytosol / cardiac muscle contraction / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Ion homeostasis / eNOS activation / titin binding / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / sperm midpiece / response to muscle stretch / release of sequestered calcium ion into cytosol / regulation of calcium-mediated signaling Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.12 Å | |||||||||
Authors | Miotto MC / Marks AR | |||||||||
| Funding support | United States, 1 items
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Citation | Journal: Nat Commun / Year: 2024Title: 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. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_42768.map.gz | 257.7 MB | EMDB map data format | |
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| Header (meta data) | emd-42768-v30.xml emd-42768.xml | 24.8 KB 24.8 KB | Display Display | EMDB header |
| Images | emd_42768.png | 211.3 KB | ||
| Filedesc metadata | emd-42768.cif.gz | 9.7 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-42768 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-42768 | HTTPS FTP |
-Validation report
| Summary document | emd_42768_validation.pdf.gz | 509.5 KB | Display | EMDB validaton report |
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| Full document | emd_42768_full_validation.pdf.gz | 509.1 KB | Display | |
| Data in XML | emd_42768_validation.xml.gz | 8.1 KB | Display | |
| Data in CIF | emd_42768_validation.cif.gz | 9.3 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-42768 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-42768 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 8uxlMC ![]() 8uq2C ![]() 8uq3C ![]() 8uq4C ![]() 8uq5C ![]() 8uxcC ![]() 8uxeC ![]() 8uxfC ![]() 8uxgC ![]() 8uxhC ![]() 8uxiC ![]() 8uxmC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_42768.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Annotation | Composite map of the Structure of PKA phosphorylated human RyR2-R420W in the primed state in the presence of calcium and calmodulin | ||||||||||||||||||||||||||||||||||||
| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.83 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: Ryanodine receptor 2
+Macromolecule #2: Peptidyl-prolyl cis-trans isomerase FKBP1B
+Macromolecule #3: Calmodulin-1
+Macromolecule #4: ZINC ION
+Macromolecule #5: ADENOSINE-5'-TRIPHOSPHATE
+Macromolecule #6: CALCIUM ION
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | 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: FIELD EMISSION GUN |
| 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: 3.12 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 77625 |
| Initial angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC |
| Final angle assignment | Type: MAXIMUM LIKELIHOOD |
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About Yorodumi



Keywords
Homo sapiens (human)
Authors
United States, 1 items
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Z (Sec.)
Y (Row.)
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FIELD EMISSION GUN

