Dopamine receptor D5

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Dopamine receptor D5
Identifiers
SymbolsDRD5; DBDR; DRD1B; DRD1L2; MGC10601
External IDsOMIM126453 MGI94927 HomoloGene20216 IUPHAR: D5 GeneCards: DRD5 Gene
RNA expression pattern
250px
More reference expression data
Orthologs
SpeciesHumanMouse
Entrez181613492
EnsemblENSG00000169676ENSMUSG00000039358
UniProtP21918Q8BLD9
RefSeq (mRNA)NM_000798NM_013503
RefSeq (protein)NP_000789NP_038531
Location (UCSC)Chr 4:
9.39 - 9.39 Mb
Chr 5:
38.61 - 38.61 Mb
PubMed search[1][2]

D(1B) dopamine receptor is a protein that in humans is encoded by the DRD5 gene.[1][2][1]

This gene encodes the D5 subtype of the dopamine receptor. The D5 subtype is a G-protein coupled receptor which stimulates adenylyl cyclase.[3] This receptor is expressed in neurons in the limbic regions of the brain. It has a 10-fold higher affinity for dopamine than the D1 subtype. Pseudogenes related to this gene reside on chromosome 1 and chromosome 2.[2]

Ligands

The D1 and D5 receptors have a high degree of structural homology and few ligands are available that can distinguish between them as yet, however there are a number of ligands that are selective for D1/5 over the other dopamine receptors. The recent development of a selective D5 antagonist has allowed the action of D1-mediated responses to be studied in the absence of a D5 component, but no selective D5 agonists are yet available.

Agonists

No selective ligands known as of yet.

Antagonists

  • 4-Chloro-7-methyl-5,6,7,8,9,14-hexahydrodibenz[d,g]azecin-3-ol: antagonist, moderate binding selectivity over D1[4]
File:4-Chloro-7-methyl-5,6,7,8,9,14-hexahydrodibenz-d,g-azecin-3-ol.png
Chemical structure of a D5-preferring ligand 4-chloro-7-methyl-5,6,7,8,9,14-hexahydrodibenz[d,g]azecin-3-ol.[4]


Interactions

Dopamine receptor D5 has been shown to interact with GABRG2.[5]

See also

References

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Further reading

External links

This article incorporates text from the United States National Library of Medicine, which is in the public domain.


pt:Receptor de dopamina D5
  1. 1.0 1.1 Lua error in package.lua at line 80: module 'Module:Citation/CS1/Suggestions' not found.
  2. 2.0 2.1 "Entrez Gene: DRD5 dopamine receptor D5". 
  3. Sidhu A (1998). "Coupling of D1 and D5 dopamine receptors to multiple G proteins: Implications for understanding the diversity in receptor-G protein coupling". Mol. Neurobiol. 16 (2): 125–34. doi:10.1007/BF02740640. PMID 9588624. 
  4. 4.0 4.1 Mohr P, Decker M, Enzensperger C, Lehmann J (2006). "Dopamine/serotonin receptor ligands. 12(1): SAR studies on hexahydro-dibenz[d,g]azecines lead to 4-chloro-7-methyl-5,6,7,8,9,14-hexahydrodibenz[d,g]azecin-3-ol, the first picomolar D5-selective dopamine-receptor antagonist". J. Med. Chem. 49 (6): 2110–6. doi:10.1021/jm051237e. PMID 16539400. 
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