Cholecystokinin A receptor
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Cholecystokinin A receptor, N-terminal domain | |||||||||
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molecular complex of cholecystokinin-8 and n-terminus of the cholecystokinin a receptor by nmr spectroscopy
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Identifiers | |||||||||
Symbol | CholecysA-Rec_N | ||||||||
Pfam | PF09193 | ||||||||
InterPro | IPR015276 | ||||||||
SCOP | 1d6g | ||||||||
SUPERFAMILY | 1d6g | ||||||||
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The Cholecystokinin A receptor is a human protein, also known as CCKAR or CCK1, with CCK1 now being the IUPHAR-recommended name.
Contents
Function
This gene encodes a G-protein coupled receptor that binds sulfated members of the cholecystokinin (CCK) family of peptide hormones. This receptor is a major physiologic mediator of pancreatic enzyme secretion and smooth muscle contraction of the gallbladder and stomach. In the central and peripheral nervous system this receptor regulates satiety and the release of beta-endorphin and dopamine.[1]
The extracellular, N-terminal, domain of this protein adopts a tertiary structure consisting of a few helical turns and a disulfide-cross linked loop. It is required for interaction of the cholecystokinin A receptor with its corresponding hormonal ligand.[2]
Selective Ligands
Agonists
- Cholecystokinin
- Gastrin
- CCK-4
- SR-146,131
- A-71623 - modified tetrapeptide, potent and selective CCKA agonist, IC50 3.7nM, 1200x selectivity over CCKB, CAS# 130408-77-4
Antagonists
- Proglumide
- Lorglumide
- Devazepide
- Dexloxiglumide
- Asperlicin
- SR-27897
- IQM-95333
- JNJ-17156516
See also
References
External links
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Further reading
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This article incorporates text from the United States National Library of Medicine, which is in the public domain.
This article incorporates text from the public domain Pfam and InterPro IPR015276
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