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Basic information
| Entry | Database: PDB / ID: 8set | |||||||||
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| Title | Cryo-EM Structure of RyR1 + cAMP | |||||||||
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Keywords | TRANSPORT PROTEIN / Calcium ion channel / skeletal muscle / nucleotide / homotetramer | |||||||||
| Function / homology | Function and homology informationnegative regulation of calcium-mediated signaling / ATP-gated ion channel activity / ryanodine-sensitive calcium-release channel activity / negative regulation of release of sequestered calcium ion into cytosol / terminal cisterna / ryanodine receptor complex / response to redox state / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / ossification involved in bone maturation / negative regulation of heart rate ...negative regulation of calcium-mediated signaling / ATP-gated ion channel activity / ryanodine-sensitive calcium-release channel activity / negative regulation of release of sequestered calcium ion into cytosol / terminal cisterna / ryanodine receptor complex / response to redox state / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / ossification involved in bone maturation / negative regulation of heart rate / skin development / cellular response to caffeine / FK506 binding / 'de novo' protein folding / outflow tract morphogenesis / organelle membrane / smooth endoplasmic reticulum / glutathione transferase / intracellularly gated calcium channel activity / glutathione transferase activity / regulation of ryanodine-sensitive calcium-release channel activity / toxic substance binding / skeletal muscle fiber development / voltage-gated calcium channel activity / calcium channel inhibitor activity / release of sequestered calcium ion into cytosol / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Ion homeostasis / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / muscle contraction / cellular response to calcium ion / calcium channel complex / sarcoplasmic reticulum membrane / glutathione metabolic process / calcium-mediated signaling / peptidylprolyl isomerase / sarcoplasmic reticulum / striated muscle contraction / peptidyl-prolyl cis-trans isomerase activity / calcium channel regulator activity / protein maturation / protein refolding / sarcolemma / intracellular calcium ion homeostasis / Stimuli-sensing channels / Z disc / calcium ion transmembrane transport / calcium channel activity / disordered domain specific binding / protein folding / protein homotetramerization / transmembrane transporter binding / calmodulin binding / signaling receptor binding / calcium ion binding / ATP binding / membrane / identical protein binding / cytoplasm Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human)![]() | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.42 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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| PDBx/mmCIF format | 8set.cif.gz | 4.2 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb8set.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 8set.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/se/8set ftp://data.pdbj.org/pub/pdb/validation_reports/se/8set | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 40428MC ![]() 8senC ![]() 8seoC ![]() 8sepC ![]() 8seqC ![]() 8serC ![]() 8sesC ![]() 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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