Rhodopsin's carboxyl-terminal threonines are required for wild-type arrestin-mediated quench of transducin activation in vitro.

Abstract excerpt

Many recent reports have demonstrated that rhodopsin's carboxyl-terminal serine residues are the main targets for phosphorylation by rhodopsin kinase. Phosphorylation at the serines would therefore be expected to promote high-affinity arrestin binding. We have examined the roles of the carboxyl serine and threonine residues during arrestin-mediated deactivation of rhodopsin using an in vitro transducin activation...

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