D2R / TRP channels
Name: D(2) dopamine receptor
(D2R)
Official Symbol: DRD2
provided by HGNC
Function:
Dopamine receptor whose activity is mediated by G proteins which inhibit adenylyl cyclase (By similarity).
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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1813![]() |
P14416![]() |
DIP-5977N![]() |
P14416![]() |
MINT-201447![]() |
108147![]() |
P14416![]() |
hsa:1813![]() |
126450![]() |
|
Mouse
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13489![]() |
P61168![]() |
MINT-5313868![]() |
199306![]() |
P61168![]() |
mmu:13489![]() |
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Rat
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24318![]() |
P61169![]() |
DIP-30883N![]() |
P61169![]() |
MINT-4792453![]() |
246498![]() |
P61169![]() |
rno:24318![]() |
Biological Process:
- GO:0032147
: activation of protein kinase activity
- GO:0021984
: adenohypophysis development
- GO:0007195
: adenylate cyclase-inhibiting dopamine receptor signaling pathway
- GO:0007628
: adult walking behavior
- GO:0050482
: arachidonic acid secretion
- GO:0031223
: auditory behavior
- GO:0007409
: axonogenesis
- GO:0048148
: behavioral response to cocaine
- GO:0048149
: behavioral response to ethanol
- GO:0048755
: branching morphogenesis of a nerve
- GO:0021853
: cerebral cortex GABAergic interneuron migration
- GO:0032922
: circadian regulation of gene expression
- GO:0042417
: dopamine metabolic process
- GO:0051482
: elevation of cytosolic calcium ion concentration involved in phospholipase C-activating G-protein coupled signaling pathway
- GO:0007631
: feeding behavior
- GO:0002031
: G-protein coupled receptor internalization
- GO:0007625
: grooming behavior
- GO:0007243
: intracellular protein kinase cascade
- GO:0007616
: long-term memory
- GO:0007194
: negative regulation of adenylate cyclase activity
- GO:0045776
: negative regulation of blood pressure
- GO:0030336
: negative regulation of cell migration
- GO:0008285
: negative regulation of cell proliferation
- GO:0042321
: negative regulation of circadian sleep/wake cycle, sleep
- GO:0060160
: negative regulation of dopamine receptor signaling pathway
- GO:0046676
: negative regulation of insulin secretion
- GO:0051898
: negative regulation of protein kinase B signaling cascade
- GO:0050709
: negative regulation of protein secretion
- GO:0051967
: negative regulation of synaptic transmission, glutamatergic
- GO:1901386
: negative regulation of voltage-gated calcium channel activity
- GO:0001976
: neurological system process involved in regulation of systemic arterial blood pressure
- GO:0007270
: neuron-neuron synaptic transmission
- GO:0030432
: peristalsis
- GO:0046488
: phosphatidylinositol metabolic process
- GO:0060158
: phospholipase C-activating dopamine receptor signaling pathway
- GO:0043473
: pigmentation
- GO:0051586
: positive regulation of dopamine uptake involved in synaptic transmission
- GO:0070374
: positive regulation of ERK1 and ERK2 cascade
- GO:0045745
: positive regulation of G-protein coupled receptor protein signaling pathway
- GO:0060124
: positive regulation of growth hormone secretion
- GO:0040018
: positive regulation of multicellular organism growth
- GO:0002052
: positive regulation of neuroblast proliferation
- GO:0002092
: positive regulation of receptor internalization
- GO:0035815
: positive regulation of renal sodium excretion
- GO:0045944
: positive regulation of transcription from RNA polymerase II promoter
- GO:0035810
: positive regulation of urine volume
- GO:0060134
: prepulse inhibition
- GO:0008104
: protein localization
- GO:0051481
: reduction of cytosolic calcium ion concentration
- GO:0030814
: regulation of cAMP metabolic process
- GO:0014059
: regulation of dopamine secretion
- GO:0002027
: regulation of heart rate
- GO:0048169
: regulation of long-term neuronal synaptic plasticity
- GO:0043666
: regulation of phosphoprotein phosphatase activity
- GO:0043266
: regulation of potassium ion transport
- GO:0002028
: regulation of sodium ion transport
- GO:0032228
: regulation of synaptic transmission, GABAergic
- GO:0051209
: release of sequestered calcium ion into cytosol
- GO:0001975
: response to amphetamine
- GO:0048678
: response to axon injury
- GO:0042493
: response to drug
- GO:0034776
: response to histamine
- GO:0001666
: response to hypoxia
- GO:0010039
: response to iron ion
- GO:0043278
: response to morphine
- GO:0035094
: response to nicotine
- GO:0009636
: response to toxin
- GO:0007608
: sensory perception of smell
- GO:0007416
: synapse assembly
- GO:0001963
: synaptic transmission, dopaminergic
- GO:0001659
: temperature homeostasis
- GO:0008542
: visual learning
- GO:0016055
: Wnt receptor signaling pathway
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:126450
: Dystonia, myoclonic (OMIM:159900
)
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 | |||
TRPC1 |
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D2R | Yeast two-hybrid | Not used as a bait | Human | Fetal brain | cDNA library | 18261457 | ||
TRPC4 |
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D2R | Inference | Prediction | 18261457 | |||||
TRPC5 |
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D2R | Inference | Prediction | 18261457 |
(
:
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 | ||
TRPC1 |
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D2R | Fusion protein-pull down assay | Human | 638-759 | E. coli | Human | 131-151 | E. coli | 18261457 |
TRPC4 |
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D2R | Fusion protein-pull down assay | Human | 621-893 | E. coli | Human | 131-151 | E. coli | 18261457 |
TRPC5 |
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D2R | Fusion protein-pull down assay | Human | 619-973 | E. coli | Human | 131-151 | E. coli | 18261457 |
(
:
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 | ||||
TRPC1 |
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D2R | Co-immunofluorescence staining | Monkey prefrontal cortex | 18261457 | |||||
TRPC1 |
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D2R | Co-immunoprecipitation | Rat striatal tissue | 18261457 | |||||
TRPC1 |
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D2R | Co-immunoprecipitation | Rat cortex tissue | 18261457 |
(
:
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 | ||||
TRPC1 |
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D2R | Yeast two-hybrid | Human | 726-745 | Human | 131-151 | 18261457 | ||
TRPC4 |
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D2R | Yeast two-hybrid | Human | 712-731 | Human | 131-151 | 18261457 | ||
TRPC5 |
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D2R | Yeast two-hybrid | Human | 719-738 | Human | 131-151 | 18261457 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)

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Functional consequence
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TRP channel | Interactor | Method | Post-translational modification | Subcellular trafficking | Activity | Reference | ||||||
TRPC1 |
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D2R | Cell surface biotinylation | Increase in plasma membrane level | 18261457 |
(
:
click the arrow icon to show interactions only between the corresponding TRP channel and the interactor)
