During primary cilia disassembly, involved in cilia disassembly. Required specifically to control cilia retraction as well as the liberation and duplication of the basal body/centrosome. May act by stimulating AURKA activity at the basal body in a cell cycle-dependent manner (By similarity). Interacts with proteins involved in ciliary transport, including ARL13B, CETN1, KIF3A, RAB6A, RAB8A, TUBB1 and TUBG1. Interacts with AURKA (By similarity). Accumulates specifically at the basal body and ciliary necklace during the early steps of cilia assembly and disassembly, when structural, functional and regulatory proteins are delivered to cilia. At S phase, accumulates in vesicles and declines during mitosis (By similarity).