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Nature. 1988 Sep 29;335(6189):437-40.

The mas oncogene encodes an angiotensin receptor.

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Medical Research Council Molecular Neurobiology Unit, Cambridge, UK.


The class of receptors coupled to GTP-binding proteins share a conserved structural motif which is described as a 'seven-transmembrane segment' following the prediction that these hydrophobic segments form membrane-spanning alpha-helices. Identified examples include the mammalian opsins, alpha 1-, alpha 2-, beta 1- and beta 2-adrenergic receptors, the muscarinic receptor family, the 5-HT1C-receptor, and the substance-K receptor. In addition, two mammalian genes have been identified that code for predicted gene products with sequence similarity to these receptors, but whose ligand specificity is unknown namely, G21 and the mas oncogene. The mas oncogene shows the greatest sequence similarity to the substance-K receptor, and on this basis it was predicted that it would encode a peptide receptor with mitogenic activity which would act through the inositol lipid signalling pathways. The mas oncogene product was transiently expressed in Xenopus oocytes, and stably expressed in a transfected mammalian cell line. The results demonstrate that the mas gene product is a functional angiotensin receptor.

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