Article
PKA-mediated phosphorylation of the beta1-adrenergic receptor promotes Gs/Gi switching.
Cellular signalling - 1 Dec 2004
Martin Negin P, Whalen Erin J, Zamah Musa A, Pierce Kristen L, Lefkowitz Robert J
Abstract excerpt
Recently, it has been shown that PKA-mediated phosphorylation of the beta(2)-adrenergic receptor (beta(2)-AR) by the cyclic AMP-dependent protein kinase (PKA) reduces its affinity for G(s) and increases its affinity for G(i). Here we demonstrate that, like the beta(2)-AR, the beta(1)-AR is also capable of "switching" its coupling from G(s) to G(i) in a PKA-dependent manner. The beta(1)-AR is capable of activating...
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