ARF1-regulated coatomer directs the steady-state localization of protein kinase C epsilon at the Golgi apparatus

► Localization of PKCε and RACK2/β′-COP at the Golgi apparatus required ARF1 activity. ► Phorbol-ester-induced translocation of PKCε was independent of ARF1 activation. ► PKCε bound to membranes using RACK2/β′-COP-dependent and -independent mechanisms.