A conserved RNA endonuclease complex required for spreading and epigenetic inheritance of heterochromatin. The rixosome contains six unique subunits: three structural subunits (Crb3, Rix1, and Ipi1) which form the core of the complex, and three catalytic subunits (the endonuclease Las1, the polynucleotide kinase Grc3, and the AAA-type ATPase Mdn1), which are involved in the processing of ribosomal RNA precursors. All subunits are essential for viability and are conserved from yeast to mammals, including humans. [GOC:vw, PMID:32491985, PMID:35355014]
Full description or abstract
Collection
C5: Ontology GO: Gene Ontology GO:CC: GO Cellular Component
LAS1 like ribosome biogenesis factor [Source:HG...
Version history
2026.1.Hs: Updated to GO Release 2025-10-10.
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