The gene encoding scHelI, a previously characterized DNA helicase from Saccharomyces cerevisiae, has been identified as YER176w, an open reading frame on chromosome V. The gene has been named HEL1 to indicate the DNA helicase activity of the gene product. HEL1 was identified by screening a lambda gt11 yeast protein expression library with antiserum to purified scHelI. Several independent immunopositive clones were isolated and shown to contain portions of HEL1 either by sequencing or by hybridization to a probe containing HEL1 sequences. The HEL1 open reading frame includes the seven conserved helicase motifs, consistent with the DNA helicase activity of scHelI, and the predicted size of the protein is in agreement with the size of purified scHelI. Partially purified cellular extracts from a hel1 deletion mutant strain did not contain scHelI activity. Homology searches revealed protein sequence homology between HEL1 and two previously identified and biochemically characterized yeast helicases, encoded by the DNA2 and UPF1 genes. Haploid hel1 deletion strains were constructed and shown to be viable with growth rates equivalent to those of parental strains. These strains did not differ from the parental strains in ultraviolet light sensitivity or the generation of petite colonies. Furthermore, these haploid deletion strains were capable for mating, the resultant diploid homozygous mutants were viable, capable of sporulation, and the spores displayed no reduction in viability.
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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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