protein folding chaperone complex large ribosomal subunit pre-assembly complex https://github.com/geneontology/go-ontology/issues/15279 A protein complex that assists early maturation of nascent 60S ribosomal subunits. The complex interacts with the large ribosomal subunit rRNA via one of the components (Urb2 in S. cerevisiae) and requires a RNA helicase (Dbp6 in S. cerevisiae). pg cellular_component 2021-09-15T12:17:56Z GO:0140714