U-box-containing Prp19p is an integral component of the Prp19p-associated complex (the nineteen complex, or NTC) that is essential for activation of the spliceosome. Prp19p makes numerous protein-protein contacts with other NTC components and is required for NTC stability. Here we show that Prp19p forms a tetramer in vitro and in vivo and we map the domain required for its oligomerization to a central tetrameric coiled-coil. Biochemical and in vivo analyses are consistent with Prp19p tetramerization providing an interaction surface for a single copy of its binding partner, Cef1p. Electron microscopy showed that the isolated Prp19p tetramer is an elongated particle consisting of four globular WD40 domains held together by a central stalk consisting of four N-terminal U-boxes and four coiled-coils. These structural and functional data provide a basis for understanding the role of Prp19p as a key architectural component of the NTC.
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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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