Gastric inhibitory polypeptide receptor

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Structures of GIPR human variant Sun, B., Kobilka, B.K., Sloop, K.W., Feng, D., Kobilka, T.S.

7RBT cryo-EM structure of human Gastric inhibitory polypeptide receptor GIPR bound to tirzepatide

CRYO EM structure and function of GIPR

GIPR
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesGIPR, PGQTL2, gastric inhibitory polypeptide receptor
External IDsOMIM: 137241 MGI: 1352753 HomoloGene: 20081 GeneCards: GIPR
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_000164
NM_001308418

NM_001080815

RefSeq (protein)

NP_000155
NP_001295347

NP_001074284

Location (UCSC)Chr 19: 45.67 – 45.68 MbChr 7: 18.89 – 18.9 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

The gastric inhibitory polypeptide receptor (GIP-R), also known as the glucose-dependent insulinotropic polypeptide receptor, is a protein that in humans is encoded by the GIPR gene.[5][6]

GIP-R is a member of the class B family of G protein coupled receptors.[7] GIP-R is found on beta-cells in the pancreas[8][9] where it serves as the receptor for the hormone Gastric inhibitory polypeptide (GIP).

Function

Gastric inhibitory polypeptide, also called glucose-dependent insulinotropic polypeptide, is a 42-amino acid polypeptide synthesized by K cells of the duodenum and small intestine. It was originally identified as an activity in gut extracts that inhibited gastric acid secretion and gastrin release, but subsequently was demonstrated to stimulate insulin release potently in the presence of elevated glucose. The insulinotropic effect on pancreatic islet beta-cells was then recognized to be the principal physiologic action of GIP. Together with glucagon-like peptide-1, GIP is largely responsible for the secretion of insulin after eating. It is involved in several other facets of the anabolic response.[5]

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000010310 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000030406 - Ensembl, 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. ^ a b "Entrez Gene: gastric inhibitory polypeptide receptor".
  6. ^ Stoffel M, Fernald AA, Le Beau MM, Bell GI (August 1995). "Assignment of the gastric inhibitory polypeptide receptor gene (GIPR) to chromosome bands 19q13.2-q13.3 by fluorescence in situ hybridization". Genomics. 28 (3): 607–609. doi:10.1006/geno.1995.1203. PMID 7490109.
  7. ^ NCBI, NCBI Gene entry 2696 (GIPR), retrieved 2018-12-20.
  8. ^ "Gastrointestinal Hormones and Peptides". Archived from the original on 2007-12-06. Retrieved 2007-08-24.
  9. ^ Brubaker PL, Drucker DJ (2002). "Structure-function of the glucagon receptor family of G protein-coupled receptors: the glucagon, GIP, GLP-1, and GLP-2 receptors". Recept. Channels. 8 (3–4): 179–188. doi:10.1080/10606820213687. PMID 12529935.

Further reading

External links

This article incorporates text from the United States National Library of Medicine, which is in the public domain.