RNA binding chaperone with ATP-independent RNA annealing activity; Nucleolar protein involved in asymmetric localization of ASH1 mRNA; binds cooperatively with She2p to the E3 zip-code element in the 3'-UTR; ribosomal 60S biogenesis factor required for Rpl43p loading; 66S pre-ribosomal particle component involved in pre-rRNA processing and 60S nuclear export; Ty1 host factor; has intrinsically disordered RNA binding (PUN) motifs; relocalizes to the cytoplasm upon DNA replication stress