In the course of studying sir4-11 which is responsible for the non-mating phenotype of asd-homothallism of Saccharomyces cerevisiae, we detected chromosomal alpha-specific suppressors of it. By examining the mating-type cassette constitution of two strains and the spore-clones derived from a diploid culture formed by a mass mating between these strains, we obtained the following results; (1) the HMRa-bearing HindIII-Bg/II restriction fragment was dimorphic, as judged by size, within each tetrad, (2) while one form was common to all tetrads, the other varied among tetrads, (3) spore-clones with the alpha-specific suppressor of sir4-11 had the variant forms while those without had the common form, and (4) while the two parents had the common form, each independent diploid clone had the common form plus a variant form. From these results, we conclude that the mating of cells in certain combinations induces a change of DNA structure at or near HMRa in a mating-pair specific manner and that the change makes HMRa non-derepressible or non-functional when derepressed.
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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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