Involved in pre-60S ribosomal particles maturation by promoting the nuclear export of the 60S ribosome. Negatively modulates the DNA binding activity of Oct-2 and therefore its transcriptional regulatory activity. Associates with pre-60S ribosomal particles. Shuttles between the nucleus and the cytoplasm. The protein is largely disordered, with the exception of the zinc finger domain. Belongs to the ZNF593/BUD20 C2H2-type zinc-finger protein family.