We report that Esf1p (Ydr365cp), an essential, evolutionarily conserved nucleolar protein, is required for the biogenesis of 18S rRNA in Saccharomyces cerevisiae. Depletion of Esf1p resulted in delayed processing of 35S precursor and a striking loss of 18S rRNA. Esf1p physically associated with ribosomal proteins and proteins involved in 18S rRNA biogenesis. Consistent with its role in 18S rRNA biogenesis, Esf1p also physically associated with U3 and U14 snoRNAs, but did not appear to be a core component of the SSU processome. These data indicate that Esf1p plays a direct role in early pre-rRNA processing.
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| Gene/Complex | Qualifier | Gene Ontology Term | Annotation Extension | Evidence | Source | Assigned On |
|---|---|---|---|---|---|---|
| ESF1 | enables | RNA binding | IDA | SGD | 2013-08-07 | |
| ESF1 | involved in | rRNA processing | IMP | SGD | 2013-08-07 |
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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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| Interactor | Interactor | Assay | Annotation | Action | Modification | |
|---|---|---|---|---|---|---|
| ESF1 | PUF6 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| ESF1 | NSR1 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| ESF1 | RPL3 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| ESF1 | RPP0 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| ESF1 | RPS3 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| ESF1 | RPS2 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| ESF1 | RLP7 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| ESF1 | RPL10 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| ESF1 | UTP22 | Affinity Capture-MS | manually curated | Bait-Hit | No Modification | |
| KRR1 | ESF1 | Affinity Capture-MS | manually curated | Hit-Bait | No Modification |