Mex67p and Mtr2p constitute an essential mRNA export complex that interacts with poly(A)+ RNA and nuclear pore proteins. We have identified Yra1p, an intranuclear protein with in vitro RNA-RNA annealing activity, which directly binds to Mex67p. The complex between Yra1p and Mex67p was reconstituted in vitro and shown by UV-crosslinking to bind directly to RNA. Mutants of YRA1 are impaired in nuclear poly(A)+ RNA export at restrictive growth conditions. ALY, the mouse homologue of Yra1p and a transcriptional coactivator, can bind in vitro to yeast and human Mex67p and partly complements the otherwise non-viable yra1 null mutant. Thus, Yra1p is the first RNA-binding protein characterized, which bridges the shuttling Mex67p/Mtr2p exporter to intranuclear mRNA transport cargoes.
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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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