Cholecystokinin receptor

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cholecystokinin A receptor
Symbol CCKAR
Entrez 886
HUGO 1570
OMIM 118444
RefSeq NM_000730
UniProt P32238
Other data
Locus Chr. 4 p15.2-p15.1
cholecystokinin B receptor
Symbol CCKBR
Entrez 887
HUGO 1571
OMIM 118445
RefSeq NM_176875
UniProt P32239
Other data
Locus Chr. 11 p15.4

Cholecystokinin receptors or CCK receptors are a group of G-protein coupled receptors which bind the peptide hormones cholecystokinin (CCK) or gastrin.[1] There are two different subtypes CCKA and CCKB which are ~50% homologous:[2] Various cholecystokinin antagonists have been developed and are used in research, although the only drug of this class that has been widely marketed to date is the anti-ulcer drug proglumide.

protein gene tissue distribution preferred ligand function
CCKA (CCK1) CCKAR primarily gastrointestinal tract, lesser amounts in the CNS sulfated CCK >> nonsulfated CCK ≈ nonsulfated CCK stimulation of bicarb secretion, gall bladder emptying and inhibiting gut motility
CCKB (CCK2) CCKBR primarily CNS, lesser amounts in the gastrointestinal tract gastrin ≈ CCK (receptor does not descriminate between sulfated and nonsulfated peptides) regulation of nociception, anxiety, memory and hunger


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External links

  1. Noble F, Wank SA, Crawley JN, Bradwejn J, Seroogy KB, Hamon M, Roques BP (1999). "International Union of Pharmacology. XXI. Structure, distribution, and functions of cholecystokinin receptors" ([dead link]). Pharmacol. Rev. 51 (4): 745–81. PMID 10581329. 
  2. Dufresne M, Seva C, Fourmy D (2006). "Cholecystokinin and gastrin receptors". Physiol. Rev. 86 (3): 805–47. doi:10.1152/physrev.00014.2005. PMID 16816139.