Involved in nuclear export of the lipid kinase MSS4 and of the 60S ribosomal subunit. May also play a role in directing MSS4 to the plasma membrane. Plays a role in actin cytoskeleton organization and vesicular transport. Phosphorylated by the PHO85-PCL1 kinase complex. Present with 4590 molecules/cell in log phase SD medium. Belongs to the BCP1 family.