In Saccharomyces cerevisiae, circular plasmids that include either a centromere (CEN-plasmids) or a telomere sequence (TEL-plasmids) segregate more efficiently than circular ARS-plasmids. In contrast, circular plasmids that include both telomere and centromere sequences were unstable, a property we term TEL+CEN antagonism. TEL+CEN antagonism required a telomere repeat tract longer than 49 bp although the distance and relative orientation of the centromere and telomere sequences was not critical. TEL+CEN antagonism was alleviated in strains carrying different rap1 alleles including rap1ts, rap1s, and rap1t alleles. Mutations SIR2, SIR3, SIR4, NAT1 and ARD1, genes that influence transcriptional silencing at telomeres and at the silent mating type loci, abolished TEL+CEN antagonism Mutation of SIR1 also partially alleviated TEL-CEN antagonism. In some sir mutant strains short yeast artificial chromosomes (YACs), which are normally unstable, became more stable, suggesting that the same mechanism that caused TEL+CEN antagonism on circular plasmids may contribute to the instability of short linear plasmids.
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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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