In eukaryotes, in vivo formation of the two ribosomal subunits from four ribosomal RNAs (rRNAs) and approximately 80 ribosomal proteins (r-proteins) involves more than 150 nonribosomal proteins and around 100 small noncoding RNAs. It is temporally and spatially organized within different cellular compartments: the nucleolus, the nucleoplasm, and the cytoplasm. Here, we present a way to analyze how eukaryotic r-proteins of the small ribosomal subunit (SSU) assemble in vivo with rRNA. Our results show that key aspects of the assembly of eukaryotic r-proteins into distinct structural parts of the SSU are similar to the in vitro assembly pathway of their prokaryotic counterparts. We observe that the establishment of a stable assembly intermediate of the eukaryotic SSU body, but not of the SSU head, is closely linked to early rRNA processing events. The formation of assembly intermediates of the head controls efficient nuclear export of the SSU and cytoplasmic pre-rRNA maturation steps.
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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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| Evidence ID | Analyze ID | File | Description |
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