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Cholecystokinin A receptor

From Wikipedia, the free encyclopedia

Protein-coding gene in the species Homo sapiens
CCKAR
Available structures
PDBOrtholog search:PDBeRCSB
List of PDB id codes

1D6G,1HZN

Identifiers
AliasesCCKAR, CCK-A, CCK1-R, CCK1R, CCKRA, cholecystokinin A receptor
External IDsOMIM:118444;MGI:99478;HomoloGene:37337;GeneCards:CCKAR;OMA:CCKAR - orthologs
Gene location (Human)
Chromosome 4 (human)
Chr.Chromosome 4 (human)[1]
Chromosome 4 (human)
Genomic location for CCKAR
Genomic location for CCKAR
Band4p15.2Start26,481,396bp[1]
End26,490,484bp[1]
Gene location (Mouse)
Chromosome 5 (mouse)
Chr.Chromosome 5 (mouse)[2]
Chromosome 5 (mouse)
Genomic location for CCKAR
Genomic location for CCKAR
Band5 C1|5 29.52 cMStart53,855,118bp[2]
End53,865,047bp[2]
RNA expression pattern
Bgee
HumanMouse (ortholog)
Top expressed in
  • gallbladder

  • body of stomach

  • fundus

  • embryo

  • islet of Langerhans

  • duodenum

  • ganglionic eminence

  • hypothalamus

  • sensory organ

  • tonsil
Top expressed in
  • epithelium of stomach

  • right lung lobe

  • lumbar spinal ganglion

  • right kidney

  • proximal tubule

  • pyloric antrum

  • human kidney

  • left lung

  • left lung lobe

  • thyroid gland
More reference expression data
BioGPS


More reference expression data
Gene ontology
Molecular function
Cellular component
Biological process
Sources:Amigo /QuickGO
Orthologs
SpeciesHumanMouse
Entrez

886

12425

Ensembl

ENSG00000163394

ENSMUSG00000029193

UniProt

P32238

O08786

RefSeq (mRNA)

NM_000730

NM_009827
NM_001347354

RefSeq (protein)

NP_000721

NP_001334283
NP_033957

Location (UCSC)Chr 4: 26.48 – 26.49 MbChr 5: 53.86 – 53.87 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse
Protein domain
Cholecystokinin A receptor, N-terminal domain
molecular complex of cholecystokinin-8 andn-terminus of the cholecystokinin a receptor by nmr spectroscopy
Identifiers
SymbolCholecysA-Rec_N
PfamPF09193
InterProIPR015276
SCOP21d6g /SCOPe /SUPFAM
Available protein structures:
Pfam  structures /ECOD  
PDBRCSB PDB;PDBe;PDBj
PDBsumstructure summary

TheCholecystokinin A receptor is a humanprotein, also known asCCKAR orCCK1, with CCK1 now being theIUPHAR-recommended name.

Function

[edit]

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.[5]

The extracellularN-terminaldomain of this protein adopts atertiary structure consisting of a fewhelicalturns and adisulfide-cross linked loop. It is required for interaction of the cholecystokinin A receptor with its correspondinghormonalligand.[6]

Selective Ligands

[edit]

Agonists

[edit]
  • Cholecystokinin
  • 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

[edit]

See also

[edit]

References

[edit]
  1. ^abcGRCh38: Ensembl release 89: ENSG00000163394Ensembl, May 2017
  2. ^abcGRCm38: Ensembl release 89: ENSMUSG00000029193Ensembl, May 2017
  3. ^"Human PubMed Reference:".National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^"Mouse PubMed Reference:".National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^"Entrez Gene: CCKAR cholecystokinin A receptor".
  6. ^Pellegrini M, Mierke DF (Nov 1999). "Molecular complex of cholecystokinin-8 and N-terminus of the cholecystokinin A receptor by NMR spectroscopy".Biochemistry.38 (45):14775–83.doi:10.1021/bi991272l.PMID 10555959.

External links

[edit]

Further reading

[edit]

This article incorporates text from theUnited States National Library of Medicine, which is in thepublic domain.


PDB gallery
  • 1d6g: MOLECULAR COMPLEX OF CHOLECYSTOKININ-8 AND N-TERMINUS OF THE CHOLECYSTOKININ A RECEPTOR BY NMR SPECTROSCOPY
    1d6g: MOLECULAR COMPLEX OF CHOLECYSTOKININ-8 AND N-TERMINUS OF THE CHOLECYSTOKININ A RECEPTOR BY NMR SPECTROSCOPY
Neurotransmitter
Adrenergic
Purinergic
Serotonin
Other
Metabolites and
signaling molecules
Eicosanoid
Other
Peptide
Neuropeptide
Other
Miscellaneous
Taste, bitter
Orphan
Other
Adhesion
Orphan
Other
Taste, sweet
Other
Frizzled
Smoothened
G protein-coupled receptor
Hormone receptors
Hypothalamic
Pituitary
Other
Opioid receptors
Other neuropeptide receptors
Type I cytokine receptor
Enzyme-linked receptor
Other
This article incorporates text from the public domainPfam andInterPro:IPR015276
Retrieved from "https://en.wikipedia.org/w/index.php?title=Cholecystokinin_A_receptor&oldid=1305916326"
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