Plays a role in the regulation of cell proliferation. Promotes activation of the AKT1 signaling pathway. Promotes phosphorylation of AKT1 at 'Ser-473'. Interacts with DCTN1 and DCTN2. Concentrated at cell-cell borders. Localizes at membranes in a microtubule-dependent manner. Expressed in fibroblast and numerous cancer cell lines (at protein level).