The HM-1 killer toxin from Hansenula mrakii is known to inhibit cell wall beta-1,3-glucan synthase of Saccharomyces cerevisiae and other sensitive strains of yeast. A number of mutants of Saccharomyces cerevisiae that show resistance to this toxin were isolated in order to clarify the killing mechanism of the toxin. These mutants, designated rhk (resistant to Hansenula killer), were classified into three complementation groups. A novel gene RHK1, which complements the killer-resistant phenotype of the largest complementation group rhk1, was isolated. DNA sequence analysis revealed an open reading frame that encodes a hydrophobic protein composed of 458 amino acids. Gene disruption followed by tetrad analysis showed that RHK1 is not essential and loss of RHK1 function endowed S. cerevisiae cells with complete killer resistance. A biochemical analysis suggested that RHK1 does not participate directly in the synthesis of beta-1,3-glucan but is involved in the synthesis of the receptor for the HM-1 killer toxin.
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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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