We have identified a new yeast nucleoporin of 159 kDa that we term NUP159. Immunofluorescence microscopy with a monospecific monoclonal antibody against NUP159 gave the punctate nuclear rim staining characteristic of nucleoporins. Immunogold electron microscopy with isolated yeast NEs yielded decoration of only the cytoplasmic side of the nuclear pore complex. The gene encoding NUP159 is essential, and, like some other nucleoporins, NUP159 contains a coiled-coil domain as well as a domain of repeated motifs. Five segments of NUP159, covering its entire length, were expressed in Escherichia coli. The repeat motif-containing segment was found to bind a nuclear transport substrate in the presence of vertebrate cytosolic extract containing nuclear transport factors. This segment also bound 35S-labeled mammalian karyopherin beta, one such transport factor that mediates the docking of substrates to the nuclear pore complex. These data establish a direct biochemical link between the repeat motif domain of a yeast nucleoporin, transport factors, (specifically karyopherin beta), and nuclear transport substrates. Its cytoplasmic aspect implies a role for NUP159 in nuclear import.
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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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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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