We have identified a novel family of yeast nuclear pore complex proteins. Three individual members of this family, NUP49, NUP100, and NUP116, have been isolated and then characterized by a combination of molecular genetics and immunolocalization. Employing immunoelectron and immunofluorescence microscopy on yeast cells, we found that the binding of a polyspecific monoclonal antibody recognizing this family was predominantly at the nuclear pore complexes. Furthermore, the tagging of NUP49 with a unique epitope enabled the immunolocalization of this protein to the nuclear pore complex by both fluorescence and electron microscopy. DNA sequence analysis has shown that the amino-terminal regions of NUP49, NUP100, and NUP116 share repeated "GLFG" motifs separated from each other by glutamine, asparagine, serine and threonine rich spacers. All three proteins lack a repetitive domain found in the two precisely described yeast nuclear pore complex proteins. Only NUP49 is essential for cell viability. NUP116-deficient cells grow very slowly and are temperature sensitive, whereas the lack of NUP100 has no detectable phenotype. NUP100 and NUP116 are homologous over their entire lengths. Interestingly, NUP100 and NUP116 are both flanked by a histidine tRNA gene and a transposon element suggesting that they may have arisen by gene duplication. We propose that subfamilies of pore complex proteins can be defined by their characteristic combinations of different modular domains.
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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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