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- PDB-9cgp: RyR1 disease mutant Y523S with FKBP12.6, nanodisc and inhibitor d... -
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Open data
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Basic information
Entry | Database: PDB / ID: 9cgp | ||||||||||||||||||
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Title | RyR1 disease mutant Y523S with FKBP12.6, nanodisc and inhibitor dantrolene in the absence of calcium with refined P1 domain | ||||||||||||||||||
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![]() | MEMBRANE PROTEIN / Ryanodine receptor / Calcium channel / Mutation / Y523S / RyR1 / dantrolene | ||||||||||||||||||
Function / homology | ![]() ATP-gated ion channel activity / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / terminal cisterna / ryanodine receptor complex ...ATP-gated ion channel activity / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / terminal cisterna / ryanodine receptor complex / ryanodine-sensitive calcium-release channel activity / response to redox state / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / : / ossification involved in bone maturation / 'de novo' protein folding / negative regulation of heart rate / skin development / FK506 binding / positive regulation of axon regeneration / channel regulator activity / organelle membrane / cellular response to caffeine / intracellularly gated calcium channel activity / outflow tract morphogenesis / smooth muscle contraction / response to vitamin E / toxic substance binding / calcium channel inhibitor activity / voltage-gated calcium channel activity / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / smooth endoplasmic reticulum / striated muscle contraction / T cell proliferation / Ion homeostasis / skeletal muscle fiber development / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / muscle contraction / release of sequestered calcium ion into cytosol / sarcoplasmic reticulum membrane / calcium channel complex / cellular response to calcium ion / sarcoplasmic reticulum / peptidyl-prolyl cis-trans isomerase activity / RNA polymerase II CTD heptapeptide repeat P3 isomerase activity / RNA polymerase II CTD heptapeptide repeat P6 isomerase activity / peptidylprolyl isomerase / calcium-mediated signaling / sarcolemma / response to hydrogen peroxide / calcium channel activity / Stimuli-sensing channels / calcium ion transmembrane transport / Z disc / intracellular calcium ion homeostasis / disordered domain specific binding / positive regulation of cytosolic calcium ion concentration / protein refolding / protein homotetramerization / transmembrane transporter binding / calmodulin binding / signaling receptor binding / calcium ion binding / ATP binding / identical protein binding / membrane / cytoplasm Similarity search - Function | ||||||||||||||||||
Biological species | ![]() ![]() ![]() | ||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.34 Å | ||||||||||||||||||
![]() | Iyer, K.A. / Samso, M. | ||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Dantrolene inhibition of ryanodine receptor 1 carrying the severe malignant hyperthermia mutation Y522S visualized by cryo-EM. Authors: Kavita A Iyer / Takuya Kobayashi / Takashi Murayama / Montserrat Samsó / ![]() ![]() Abstract: Mutations in the skeletal isoform of the ryanodine receptor 1 (RyR1) pose grave risks during anesthesia or treatment with succinylcholine muscle relaxants. These can trigger a potentially lethal ...Mutations in the skeletal isoform of the ryanodine receptor 1 (RyR1) pose grave risks during anesthesia or treatment with succinylcholine muscle relaxants. These can trigger a potentially lethal malignant hyperthermia (MH) episode via intracellular calcium increase mainly from RyR1 channel leakage. Dantrolene is the only known treatment option to prevent death. The main target of dantrolene is RyR1; however, little is known about the mechanism of inhibition. Cryoelectron microscopy (cryo-EM) structures of dantrolene bound to the severe MH Y522S RyR1 mutant in the closed and open states at 2.5-3.3 Å resolution revealed that the drug binds to the channel's cytoplasmic assembly, far from the ion gate, interacting with residues W882, W996, and R1000 in the P1 domain. The finding was validated by Ca imaging and [H]ryanodine binding in wild-type (WT) and alanine mutants. Dantrolene reduced channel opening probability by restricting the central activation module, "cooling down" the primed conformation caused by the mutation. | ||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 3.2 MB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
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Full document | ![]() | 1.6 MB | Display | |
Data in XML | ![]() | 401.2 KB | Display | |
Data in CIF | ![]() | 622.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 45584MC 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
#1: Protein | Mass: 565832.562 Da / Num. of mol.: 4 / Mutation: Y523S Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 11667.305 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Production host: ![]() ![]() References: UniProt: P68106, peptidylprolyl isomerase #3: Chemical | ChemComp-ZN / #4: Chemical | ChemComp-ATP / #5: Chemical | ChemComp-U1C / Mass: 314.253 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C14H10N4O5 / Feature type: SUBJECT OF INVESTIGATION Has ligand of interest | Y | Has protein modification | N | |
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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
Component | Name: RyR1 disease mutant Y523S with FKBP12.6, nanodisc and inhibitor dantrolene in the absence of calcium with refined P1 domain Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT | |||||||||||||||||||||||||||||||||||
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Molecular weight | Value: 2.26 MDa / Experimental value: NO | |||||||||||||||||||||||||||||||||||
Source (natural) | Organism: ![]() ![]() | |||||||||||||||||||||||||||||||||||
Source (recombinant) | Organism: ![]() | |||||||||||||||||||||||||||||||||||
Buffer solution | pH: 7.4 | |||||||||||||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 277 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 81000 X / Nominal defocus max: 2600 nm / Nominal defocus min: 1200 nm / Cs: 2.7 mm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 2.69 sec. / Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 4 / Num. of real images: 13992 |
EM imaging optics | Energyfilter slit width: 10 eV |
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Processing
EM software |
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CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 1749151 | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.34 Å / Resolution method: OTHER / Num. of particles: 249034 Details: The P1 domain (at the corners) was refined using focused alignment and combined with the original 3.34 A-resolution map Num. of class averages: 3 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 7T64 Accession code: 7T64 / Source name: PDB / Type: experimental model |