Promotes CCP110 ubiquitination and proteasome-dependent degradation. By counteracting accumulation of CP110, maintains normal centriolar homeostasis and preventing formation of ectopic microtubular organizing centers. Interacts with CCP110; this interaction propmotes CCP110 ubiquitination and degradation via the proteasome pathway. Via its interaction with CCP110, may indirectly interact with CEP97. Interacts with the E3 ubiquitin-protein ligase HERC2 and UBE3A. May interact with MAPK6 and hence mediate MAPK6 interaction with UBE3A. Interaction with UBE3A may be indirect and mediated by HERC2. Localizes to procentriole and daughter centriole in growing and quiescent cells (PubMed:22441691). May loose association with centrosomes during mitosis (PubMed:22261722). Widely expressed at high levels (including brain). The third NHR domain (NHR 3) is required for localization to both mother and daughter centrioles. NHR 1 restricts targeting to daughter centriole (PubMed:22441691). NHR 3 and 4 are required for CCP110/CEP97-binding, but not for HERC2-binding. NHR 5 and 6 are important for HERC2-binding and centrosomal localization (PubMed:22261722). Ubiquitinated; undergoes HERC2-dependent 'Lys-48' ubiquitination. This ubiquitination leads to proteasomal degradation. Extended N-terminus.