Involved in pre-60S ribosomal particles maturation by promoting the nuclear export of the 60S ribosome (PubMed:23045392). Involved in positioning the proximal bud pole signal (PubMed:11452010). Associates with pre-60S ribosomal particles; released from the pre-60S particle very early in the cytoplasm. Shuttles between the nucleus and the cytoplasm. Present with 5630 molecules/cell in log phase SD medium. Belongs to the ZNF593/BUD20 C2H2-type zinc-finger protein family.