Involved in neuronal migration during development of the cerebral neocortex. May regulate the stability and proteasomal degradation of the estrogen receptors that play an important role in neuronal differentiation, survival and plasticity (By similarity). Axonemal dynein assembly factor required for ciliary motility. Interacts with ZMYND10 (By similarity). Interacts with ESR1 and ESR2. Interacts with STUB1 (By similarity). Interacts with DNAAF2 (By similarity). Interacts with CCT3, CCT4, CCT5 and CCT8 (PubMed:23872636). Interacts with DNAAF6/PIH1D3 (By similarity).