Component of secretory vesicle machinery in developing neurons that acts as a regulator of neurite outgrowth. Regulates the secretory vesicle transport by controlling the accumulation of Rab6-containing secretory vesicles in the pericentrosomal region restricting anterograde secretory transport during the early phase of neuronal differentiation, thereby inhibiting neuritogenesis. Interacts with KIF1C. Interacts with RAB6A and RAB6B; interaction is specific to Rab6. Localizes around the centrosome. Highly expressed during early embryonic development. Predominantly expressed in kidney, undifferentiated neural tissue and developing eye. Predominately expressed in early developing neurons before the stage of neurite outgrowth and elongation. Then, expression strongly declines during neuronal development. Belongs to the BICDR family.