Aging is a multi-factorial and complex phenomenon. Saccharomyces cerevisiae is developed as a model of aging and has been widely studied in order to understand the mechanism of lifespan regulation. A large number of high-throughput studies were conducted to identify the genes which modulate lifespan. These studies provide the list of genes that regulates the lifespan in yeast; however the regulation of these aging associated genes had not been fully understood. In this study, we have shown that deletion of the genes which increase the replicative lifespan (RLS) of yeast show discrete expression patterns when compared with the genes that, on deletion, cause a decrease in lifespan. Expression of longlived (LL) genes decreases as the cell progresses from mid log to stationary phase, whereas expression of shortlived (SL) genes remains unchanged. This distinct expression of LL and SL gene-sets suggests their differential gene regulation. Further analysis of transcriptional regulation by transcription factors and epigenetic regulators (acetylation and methylation) suggests that this differential expression of the two gene-sets is due to their differential epigenetic regulations, rather than regulation by transcription factors. These results accentuate the importance of epigenetic modifications in aging. We deduce that future focused studies on epigenetic modification regulation will help lead to a better understanding of the aging process.
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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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Evidence ID | Analyze ID | File | Description |
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