(2013) Structure-function from the G protein-coupled receptor superfamily, Annu Rev Pharmacol Toxicol 53, 531C556
(2013) Structure-function from the G protein-coupled receptor superfamily, Annu Rev Pharmacol Toxicol 53, 531C556. selectively induces ERK1/2 activation through both the Gi subunit and -arrestin proteins. This work elucidates the signal transduction pathway of 5-HT1B receptors, as well as key phosphorylation sites within the receptor that modulate ERK1/2 activation, and further characterizes the intracellular mechanisms that underlie 5-HT1B receptor function. should be examined in future studies. We observed a different pattern of -arrestin isoform involvement in non-neuronal MEF cells. In those cells, ERK1 phosphorylation depended only on -arrestin 2, while either -arrestin 1 or -arrestin 2 deletion blocked the phosphorylation of ERK2. Previous studies show that the mechanism by which GPCRs engage ERK1/2 is highly cell type-specific and dependent on the expression of various isoforms of upstream molecules.51 Additionally, levels…