This family includes the Urb2 protein from yeast that are involved in ribosome biogenesis .
This entry represents a conserved domain found towards the C terminus of proteins involved in ribosome biogenesis, such as the Urb2 protein from yeast [PUBMED:15226434].
Dez C, Froment C, Noaillac-Depeyre J, Monsarrat B, Caizergues-Ferrer M, Henry Y; , Mol Cell Biol. 2004;24:6324-6337.: Npa1p, a component of very early pre-60S ribosomal particles, associates with a subset of small nucleolar RNPs required for peptidyl transferase center modification. PUBMED:15226434 EPMC:15226434.