H2 receptor binds histamine

Stable Identifier
R-HSA-390909
Type
Reaction [binding]
Species
Homo sapiens
Compartment
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Histamine H2 receptors (Gantz I et al, 1991) are primarily located on parietal cells (oxyntic cells) which are the stomach epithelium cells that secrete gastric acid in response to histamine. This action is modulated by coupling of the activated receptor with the G protein alpha-s subtype which can stimulate adenylate cyclase (Mitsuhashi M et al, 1989). Through a separate mechanism, the activated receptor can also couple with the G protein alpha-q/11 to stimulate phospholipase C (Mitsuhashi M et al, 1989). H2-receptor antagonists (H2RA) are a class of drugs used to block the action of histamine on parietal cells in the stomach, decreasing the production of acid by these cells.They are used in the treatment of dyspepsia.

Literature References
PubMed ID Title Journal Year
2553705 Multiple signaling pathways of histamine H2 receptors. Identification of an H2 receptor-dependent Ca2+ mobilization pathway in human HL-60 promyelocytic leukemia cells

Mitsuhashi, M, Mitsuhashi, T, Payan, DG

J Biol Chem 1989
1714721 Molecular cloning of the human histamine H2 receptor

Gantz, I, Munzert, G, Tashiro, T, Schäffer, M, Wang, L, DelValle, J, Yamada, T

Biochem Biophys Res Commun 1991
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