During centriole duplication, may play a role in the centriole elongation by promoting the recruitment of the microtubule-binding elongation machinery, leading to the centriole to centrosome conversion (By similarity). In addition may play a role in the primary cilia assembly (By similarity). Recruited to the nascent daughter centriole early in the duplication cycle and localizes to the proximal centriolar lumen just above the cartwheel. Belongs to the PPP1R35 family.