Utp8 is an essential component of the nuclear tRNA export machinery in Saccharomyces cerevisiae. It is a tRNA binding protein that acts at a step between tRNA maturation /aminoacylation, and translocation of the tRNA across the nuclear pore complex [1].

1: Utp8p Is a Nucleolar tRNA-binding Protein That Forms a Complex with Components of the Nuclear tRNA Export Machinery in Saccharomyces cerevisiae. Strub BR, Eswara MB, Pierce JB, Mangroo D; Mol Biol Cell. 2007;18:3845-3859. PMID:17634288

2: A large nucleolar U3 ribonucleoprotein required for 18S ribosomal RNA biogenesis. Dragon F, Gallagher JE, Compagnone-Post PA, Mitchell BM, Porwancher KA, Wehner KA, Wormsley S, Settlage RE, Shabanowitz J, Osheim Y, Beyer AL, Hunt DF, Baserga SJ; Nature 2002;0:0-0. PMID:12068309

3: Utp8p is an essential intranuclear component of the nuclear tRNA export machinery of Saccharomyces cerevisiae. Steiner-Mosonyi M, Leslie DM, Dehghani H, Aitchison JD, Mangroo D; J Biol Chem. 2003;278:32236-32245. PMID:12794079