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, et al. Nature. 2002 Jun 27; 417(6892):967-70. Epub 2002 Jun 9.