Bombesin is a 14-amino acid peptide originally isolated from the skin of the European fire-bellied toad (Bombina bombina). It has two known homologs in mammals called neuromedin B and gastrin-releasing peptide. It stimulates gastrin release from G cells. It activates three different G-protein-coupled receptors known as BBR1, -2, and -3. It also activates these receptors in the brain. Together with cholecystokinin, it is the second major source of negative feedback signals that stop eating behaviour.
3D model (JSmol)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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- "Isolation and Structure of Bombesin and Alytesin, two Analogous Active Peptides from the Skin of the European Amphibians Bombina and Alytes" by A. ANASTASI, V. ERSPAMER and M. BuccI http://download.springer.com/static/pdf/258/art%253A10.1007%252FBF02145873.pdf?auth66=1384653010_1b792225201410812f5c123e46ce10a5&ext=.pdf[permanent dead link]
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- Ohlsson B, Fredäng N, Axelson J (December 1999). "The effect of bombesin, cholecystokinin, gastrin, and their antagonists on proliferation of pancreatic cancer cell lines". Scandinavian Journal of Gastroenterology. 34 (12): 1224–9. doi:10.1080/003655299750024742. PMID 10636070.