Membrane estrogen receptor

Membrane estrogen receptors (mERs) are a group of receptors which bind estrogen. Unlike nuclear estrogen receptors, which mediate their effects via slower genomic mechanisms, mERs are cell surface receptors that rapidly alter cell signaling via modulation of intracellular signaling cascades.

Nuclear estrogen receptors such as ERα and ERβ become mERs through palmitoylation, a post-translational modification that enhances ER association with caveolin-1 to enable trafficking of ERs to the membrane or membrane caveolae. Other putative mERs include GPER (GPR30), GPRC6A, ER-X, ERx and Gq-mER.

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