RyR2 / TRP channels
Name: Ryanodine receptor 2
(RyR2)
Official Symbol: RYR2
provided by HGNC
Function:
Calcium channel that mediates the release of Ca(2+) from the sarcoplasmic reticulum into the cytoplasm and thereby plays a key role in triggering cardiac muscle contraction. Aberrant channel activation can lead to cardiac arrhythmia. In cardiac myocytes, calcium release is triggered by increased Ca(2+) levels due to activation of the L-type calcium channel CACNA1C. The calcium channel activity is modulated by formation of heterotetramers with RYR3. Required for cellular calcium ion homeostasis. Required for embryonic heart development.
Source: Reorganizing the protein space at the Universal Protein Resource (UniProt)
Nucleic Acids Res. 40: D71-D75 (2012).
Species |
External DB
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Entrez Gene | UniprotKB | DIP | IntAct | MINT | BioGRID | STRING | IUPHAR-DB | KEGG | OMIM | |
Human
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6262![]() |
Q92736![]() |
DIP-38325N![]() |
Q92736![]() |
MINT-1201008![]() |
112174![]() |
Q92736![]() |
hsa:6262![]() |
180902![]() |
|
Mouse
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20191![]() |
Q9ERN6![]() |
DIP-32244N![]() |
Q9ERN6![]() |
MINT-4129173![]() |
203046![]() |
Q9ERN6![]() |
mmu:20191![]() |
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Rat
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689560![]() |
B0LPN4![]() |
UNK-5492549![]() |
604379![]() |
B0LPN4![]() |
rno:689560![]() |
Biological Process:
- GO:0030509
: BMP signaling pathway
- GO:0060070
: canonical Wnt receptor signaling pathway
- GO:0060048
: cardiac muscle contraction
- GO:0003300
: cardiac muscle hypertrophy
- GO:0071313
: cellular response to caffeine
- GO:0005513
: detection of calcium ion
- GO:0003143
: embryonic heart tube morphogenesis
- GO:0008627
: intrinsic apoptotic signaling pathway in response to osmotic stress
- GO:0003220
: left ventricular cardiac muscle tissue morphogenesis
- GO:0010460
: positive regulation of heart rate
- GO:0086094
: positive regulation of ryanodine-sensitive calcium-release channel activity by adrenergic receptor signaling pathway involved in positive regulation of cardiac muscle contraction
- GO:0086029
: Purkinje myocyte to ventricular cardiac muscle cell signaling
- GO:0010881
: regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion
- GO:0086005
: regulation of ventricular cardiac muscle cell action potential
- GO:0014808
: release of sequestered calcium ion into cytosol by sarcoplasmic reticulum
- GO:0001666
: response to hypoxia
- GO:0051775
: response to redox state
Source: The Gene Ontology Consortium. Gene ontology: tool for the unification of biology. Nat. Genet.. May 2000;25(1):25-9.
World Wide Web URL: http://www.geneontology.org/
World Wide Web URL: http://www.geneontology.org/
Disease:
- OMIM:180902
: Ventricular tachycardia, catecholaminergic polymorphic, 1 (OMIM:604772
)
- OMIM:180902
: Arrhythmogenic right ventricular dysplasia 2 (OMIM:600996
)
Source: Online Mendelian Inheritance in Man, OMIM®. McKusick-Nathans Institute of Genetic Medicine,
Johns Hopkins University (Baltimore, MD), May, 2012.
World Wide Web URL: http://omim.org/
World Wide Web URL: http://omim.org/
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Screening
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Experimental screening | Non-experimental screening | Reference | ||||||||
TRP channel construct | Interactor source | |||||||||
TRP channel | Interactor | Method | Species | Region | Species | Organ/tissue | Sample type | |||
TRPC3 |
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RyR2 | Inference | Prediction | 17012351 | |||||
TRPP1 |
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RyR2 | Inference | Prediction | 17404231 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)
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Validation: In vitro validation
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Assay with recombinant proteins | Reference | |||||||||
TRP channel construct | Interactor construct | |||||||||
TRP channel | Interactor | Method | Species | Region | Expression system | Species | Region | Expression system | ||
TRPP1 |
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RyR2 | Fusion protein-pull down assay | Human | 1-703 | MDCK lysates | Not used | Mouse cardiac tissue microsome | 17404231 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)

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Validation: In vivo validation
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Assay with endogenous proteins | Assay with overexpressed proteins | Reference | ||||||||
Cell or tissue | Cell or tissue | TRP channel construct | Interactor construct | |||||||
TRP channel | Interactor | Method | Species | Region | Species | Region | ||||
TRPC3 |
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RyR2 | Co-immunofluorescence staining | Rat myocyte section | 17012351 | |||||
TRPC3 |
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RyR2 | Co-immunoprecipitation | Rat ventricle lysates | 17012351 | |||||
TRPP1 |
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RyR2 | Co-immunoprecipitation | Mouse heart tissue | 17404231 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)

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Characterization
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Binding region mapping | Stoichiometry | Affinity (Kd) | Reference | |||||||
TRP channel | Interactor | |||||||||
TRP channel | Interactor | Method | Species | Region | Species | Region | ||||
TRPP1 |
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RyR2 | Fusion protein-pull down assay | Human | 703-968 | Mouse | Not determined | 17404231 | ||
TRPP1 |
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RyR2 | Fusion protein-pull down assay | Human | 130-220 | Mouse | Not determined | 17404231 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)
