Required for centriole duplication. Inhibition of centriole duplication leading to defects in cytokinesis. Interacts with LYST. Centriole-associated, asymmetrically localizes to the daughter centriole. Widely expressed (at protein level). Highly expressed in testis. Also expressed in spleen, thymus, prostate, small intestine, colon and peripheral blood leukocytes. Preferentially incorporated into the newly assembled daughter centriole during centriole assembly at the late G1 or early S phase. Remains in the daughter centrioles throughout the cell cycle. At the next cycle of centriole duplication, its amount on the original daughter centriole eventually decreases. Wrong choice of frame.