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Basic information
| Entry | Database: PDB / ID: 8seq | |||||||||
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| Title | Cryo-EM Structure of RyR1 + AMP | |||||||||
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Keywords | TRANSPORT PROTEIN / Calcium ion channel / skeletal muscle / nucleotide / homotetramer | |||||||||
| Function / homology | Function and homology informationATP-gated ion channel activity / positive regulation of sequestering of calcium ion / negative regulation of calcium-mediated signaling / 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 / insulin secretion involved in cellular response to glucose stimulus / terminal cisterna / ryanodine receptor complex / ryanodine-sensitive calcium-release channel activity ...ATP-gated ion channel activity / positive regulation of sequestering of calcium ion / negative regulation of calcium-mediated signaling / 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 / 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 / cellular response to caffeine / skin development / FK506 binding / organelle membrane / intracellularly gated calcium channel activity / smooth endoplasmic reticulum / outflow tract morphogenesis / glutathione transferase / smooth muscle contraction / glutathione transferase activity / toxic substance binding / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / T cell proliferation / striated muscle contraction / voltage-gated calcium channel activity / calcium channel inhibitor activity / skeletal muscle fiber development / Ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / release of sequestered calcium ion into cytosol / calcium channel complex / glutathione metabolic process / sarcoplasmic reticulum membrane / muscle contraction / cellular response to calcium ion / protein maturation / sarcoplasmic reticulum / calcium channel regulator activity / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / calcium-mediated signaling / sarcolemma / calcium ion transmembrane transport / calcium channel activity / Stimuli-sensing channels / 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 | Homo sapiens (human)![]() | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | |||||||||
Authors | Cholak, S. / Saville, J.W. / Zhu, X. / Berezuk, A.M. / Tuttle, K.S. / Haji-Ghassemi, O. / Van Petegem, F. / Subramaniam, S. | |||||||||
| Funding support | Canada, 2items
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Citation | Journal: Structure / Year: 2023Title: Allosteric modulation of ryanodine receptor RyR1 by nucleotide derivatives. Authors: Spencer Cholak / James W Saville / Xing Zhu / Alison M Berezuk / Katharine S Tuttle / Omid Haji-Ghassemi / Francisco J Alvarado / Filip Van Petegem / Sriram Subramaniam / ![]() Abstract: The coordinated release of Ca from the sarcoplasmic reticulum (SR) is critical for excitation-contraction coupling. This release is facilitated by ryanodine receptors (RyRs) that are embedded in the ...The coordinated release of Ca from the sarcoplasmic reticulum (SR) is critical for excitation-contraction coupling. This release is facilitated by ryanodine receptors (RyRs) that are embedded in the SR membrane. In skeletal muscle, activity of RyR1 is regulated by metabolites such as ATP, which upon binding increase channel open probability (P). To obtain structural insights into the mechanism of RyR1 priming by ATP, we determined several cryo-EM structures of RyR1 bound individually to ATP-γ-S, ADP, AMP, adenosine, adenine, and cAMP. We demonstrate that adenine and adenosine bind RyR1, but AMP is the smallest ATP derivative capable of inducing long-range (>170 Å) structural rearrangements associated with channel activation, establishing a structural basis for key binding site interactions that are the threshold for triggering quaternary structural changes. Our finding that cAMP also induces these structural changes and results in increased channel opening suggests its potential role as an endogenous modulator of RyR1 conductance. | |||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 8seq.cif.gz | 4.2 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb8seq.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 8seq.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 8seq_validation.pdf.gz | 1.8 MB | Display | wwPDB validaton report |
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| Full document | 8seq_full_validation.pdf.gz | 1.9 MB | Display | |
| Data in XML | 8seq_validation.xml.gz | 424.9 KB | Display | |
| Data in CIF | 8seq_validation.cif.gz | 661.7 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/se/8seq ftp://data.pdbj.org/pub/pdb/validation_reports/se/8seq | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 40425MC ![]() 8senC ![]() 8seoC ![]() 8sepC ![]() 8serC ![]() 8sesC ![]() 8setC ![]() 8seuC ![]() 8sevC ![]() 8sewC ![]() 8sexC ![]() 8seyC ![]() 8sezC ![]() 8sf0C M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Assembly
| Deposited unit | ![]()
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| Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments:
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About Yorodumi




Homo sapiens (human)

Canada, 2items
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