Ribosome biogenesis requires, in addition to rRNA molecules and ribosomal proteins, a multitude of trans-acting factors. Recently it has become clear that in the yeast Saccharomyces cerevisiae many RNA helicases of the DEAD-box and related families are involved in ribosome biogenesis. Here we show that the previously uncharacterised open reading frame YDL031w (renamed DBP10 for DEAD-box protein 10) encodes an essential putative RNA helicase that is required for accurate ribosome biogenesis. Genetic depletion of Dbp10p results in a deficit in 60S ribosomal subunits and an accumulation of half-mer polysomes. Furthermore, pulse-chase analyses of pre-rRNA processing reveal a strong delay in the maturation of 27SB pre-rRNA intermediates into 25S rRNA and 7S pre-rRNA. Northern blot analyses indicate that this delay leads to higher steady-state levels of 27SB species and reduced steady-state levels of 7S pre-rRNA and 25S/5.8S mature rRNAs, thus explaining the final deficit in 60S subunit and the formation of half-mer polysomes. Consistent with a direct role in ribosome biogenesis, Dbp10p was found to be located predominantly in the nucleolus.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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