Functions as a cytoplasmic linker protein. Involved in TGN-endosome dynamics. May modulate the cellular compartmentalization of AKT kinase family and promote its cell membrane localization, thereby playing a role in glucose transport in adipocytes (By similarity). Homodimer. Interacts with AKT1 and AKT2; when AKT1 and AKT2 are phosphorylated and activated, affinity is higher for AKT2. Interacts with ZDHHC13 (via ANK repeats). Interacts with ZDHHC17 (via ANK repeats). Localized to Golgi stacks as well as on tubulovesicular elements juxtaposed to Golgi cisternae. Microtubule association is inhibited by the ANK repeats and the Golgi localization region (GoLD). Palmitoylation by ZDHHC17 regulates association with the plasma membrane. The N-terminal half is dispensable for proper Golgi targeting, whereas the GoLD region is required.