Английская Википедия:Hypocretin (orexin) receptor 2

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Шаблон:Short description Шаблон:Infobox gene Шаблон:Infobox protein family Orexin receptor type 2 (Ox2R or OX2), also known as hypocretin receptor type 2 (HcrtR2), is a protein that in humans is encoded by the HCRTR2 gene.[1]

Structure

The structure of the receptor has been solved to 2.5 Å resolution as a fusion protein bound to suvorexant using lipid-mediated crystallization.[2]

Function

OX2 is a G-protein coupled receptor expressed exclusively in the brain. It has 64% identity with OX1. OX2 binds both orexin A and orexin B neuropeptides. OX2 is involved in the central feedback mechanism that regulates feeding behaviour.[1] Mice with enhanced OX2 signaling are resistant to high-fat diet-induced obesity.[3]

This receptor is activated by Hipocretin, which is a wake-promoting hypothalamic neuropeptide that acts as a critical regulator of sleep in animals as Zebrafish or Mammals. This protein has mutations in Astyanax mexicanus that reduces the sleep needs of the cavefish. [4]

Ligands

Agonists

Antagonists

See also

References

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Further reading

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Шаблон:NLM content Шаблон:G protein-coupled receptors Шаблон:Orexin receptor modulators