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Trends Pharmacol Sci. 1995 Jul;16(7):232-8.

Agonist-receptor efficacy. II. Agonist trafficking of receptor signals.

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Department of Cellular Biochemistry, Glaxo Research Institute, Research Triangle Park, NC 27709, USA.


There is evidence to suggest that receptors with seven transmembrane domains can exist in G protein-activating conformations. It is not known how many activated receptor forms exist for each receptor. Furthermore, if there are multiple forms, does the chemical structure of the agonist determine which form dominates, and therefore, which response pathway is activated? This latter scheme is referred to as agonist-receptor trafficking, and is discussed in this, the second of two articles by Terry Kenakin. One way to approach these questions is to study receptors that couple to more than one G protein and, in essence, to try to allow the G protein to indicate the receptor state.

[Indexed for MEDLINE]

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