Abstract

A key function of coat proteins is the sorting of protein cargoes into intracellular transport pathways. For many years, however, it has been unclear whether this role of coat proteins would apply to pathways of endocytic recycling. This issue has been clarified in recent years through the identification of multiple coat complexes acting in the recycling pathways. Leading this charge have been studies on a coat complex defined by ACAP1 (adenosine diphosphate ribosylation factor GTPase-activating proteins with Coiled-coil, Ankryin repeat and PH domains 1), which acts in the sorting of cargoes at the recycling endosome for their return to the plasma membrane. This chapter describes the methods used to characterize this role of ACAP1.

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