Single-stranded DNA binding proteins (SSBs) are known to play a role in DNA replication and recombination in prokaryotes. An SSB was previously purified from the yeast Saccharomyces cerevisiae. This SSB stimulated the activity of a cognate strand exchange protein (SEP1) in vitro suggesting a role in recombination. We have cloned and functionally analyzed the gene encoding this protein. DNA sequencing of the cloned DNA revealed a 621 amino acid open reading frame with a coding potential for a Mr 70,269 polypeptide. Highly significant amino acid homology was detected between this S.cerevisiae gene and the Mr 70,000 subunit polypeptide of human RP-A, a cellular protein essential for SV40 DNA replication in vitro. Therefore, we named the S.cerevisiae gene RPA1. RPA1 encodes an essential function in this organism as shown by tetrad analysis of heterozygous insertion mutants and is continuously required for mitotic growth. Cells lacking RPA1 accumulate as multiply budded cells with a single nucleus suggesting a defect in DNA replication.
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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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