The nucleolar protein Nop2p is an essential gene product that is required for pre-rRNA processing and ribosome biogenesis in Saccharomyces cerevisiae (Hong, B. et al., 1997, Mol. Cell. Biol., 17, 378-388). A search for proteins similar to Nop2p identified a novel yeast gene product that also shares significant homology with the human proliferation associated nucleolar protein p120. The gene encoding this 78kDa protein was termed NCL1 (for nuclear protein 1; corresponding to YBL024w). Ncl1p and Nop2p contain an evolutionarily conserved motif that has been termed the 'NOL1/NOP2/fmu family signature' (NOL1 encodes p120). Epitope tagged Ncl1p was found to be localized to the nucleus, including the nucleolus, and was concentrated at the nuclear periphery. NCL1 is not essential. Strains containing a disruption of NCL1, or strains overexpressing NCL1, grow essentially identically to wildtype NCL1 strains on a number of different media and at different temperatures. Disruption of NCL1 does not affect steady-state levels of large and small ribosome subunits, monoribosomes, and polyribosomes. However, disruption of NCL1 leads to increased sensitivity to the antibiotic paromomycin.
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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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