Component of the exocyst complex involved in the docking of exocytic vesicles with fusion sites on the plasma membrane (By similarity). Together with RAB11A, RAB3IP, RAB8A, PARD3, PRKCI, ANXA2, CDC42 and DNMBP promotes transcytosis of PODXL to the apical membrane initiation sites (AMIS), apical surface formation and lumenogenesis. The exocyst complex is composed of EXOC1, EXOC2, EXOC3, EXOC4, EXOC5, EXOC6, EXOC7 and EXOC8 (By similarity). Interacts with CNTRL. Interacts with RAB11A in a GTP-dependent manner (By similarity). Perinuclear in undifferentiated cells. Redistributes to growing neurites and growth cones during neuronal differentiation (By similarity). Colocalizes with CNTRL/centriolin at the midbody ring (By similarity). Belongs to the SEC15 family.