Gs alpha subunit
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| GNAS complex locus | |
|---|---|
| Identifiers | |
| Symbol | GNAS |
| Alt. symbols | GNAS1 |
| Entrez | 2778 |
| HUGO | 4392 |
| OMIM | 139320 |
| RefSeq | NM_000516 |
| UniProt | Q5JWF2 |
| Other data | |
| Locus | Chr. 20 q13.2-13.3 |
The Gs alpha subunit (or Gs protein) is a heterotrimeric G protein subunit that activates the cAMP-dependent pathway by activating adenylate cyclase.
Contents |
Receptors [edit]
The G protein-coupled receptors that couple to this kind of G-protein include:
- 5-HT receptors types 5-HT4 and 5-HT7
- ACTH receptor
- Adenosine receptor types A2a and A2b
- Arginine vasopressin receptor 2
- β-adrenergic receptors types β1, β2 and β3
- Calcitonin receptor
- Calcitonin gene-related peptide receptor
- Corticotropin-releasing hormone receptor
- Dopamine receptors D1-like family (D1 and D5)
- FSH-receptor
- Gastric inhibitory polypeptide receptor
- Glucagon receptor
- Histamine H2 receptor
- Luteinizing hormone/choriogonadotropin receptor
- Melanocortin receptor
- Parathyroid hormone receptor 1
- Prostaglandin receptor types D2 and I2
- Secretin receptor
- Thyrotropin receptor
- Box jellyfish opsin
Function [edit]
Main article: function of cAMP-dependent protein kinase
The general function of Gs is to activate adenylate cyclase, which, in turn, produces cAMP, which, in turn activates cAMP-dependent protein kinase. Further effects of Gs are thus found in function of cAMP-dependent protein kinase.
It provides a step in signal transduction. Amplification of the signal occurs for instance because the receptor activates several Gs. [1] However, each Gs activates only one adenylate cyclase.[1]
See also [edit]
External links [edit]
- G(s)alpha at the US National Library of Medicine Medical Subject Headings (MeSH)
- GNAS protein, human at the US National Library of Medicine Medical Subject Headings (MeSH)
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References [edit]
- ^ a b Page 155 in: Purves (2007). Neuroscience, 4th Edition. Sinauer Associates Inc. ISBN 978-0-87893-697-7.
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