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| http://purl.uniprot.org/citations/15489194 | http://www.w3.org/2000/01/rdf-schema#comment | "Mitochondria have been associated with aging in many experimental systems through the damaging action of reactive oxygen species. There is more, however, to the connection between mitochondria and Saccharomyces cerevisiae longevity and aging. Induction of the retrograde response, a pathway signaling mitochondrial dysfunction, results in the extension of life span and postponement of the manifestations of aging, changing the metabolic and stress resistance status of the cell. A paradox associated with the retrograde response is the simultaneous triggering of extrachromosomal ribosomal DNA circle (ERC) production, because of the deleterious effect these circles have on yeast longevity. The retrograde response gene RTG2 appears to play a pivotal role in ERC production, linking metabolism and genome stability. In addition to mother cell aging, mitochondria are important in establishment of age asymmetry between mother and daughter cells. The results more generally point to the existence of a mechanism to "filter" damaged components from daughter cells, a form of checkpoint control. Mitochondrial integrity is affected by the PHB1 and PHB2 genes, which encode inner mitochondrial membrane chaperones called prohibitins. The Phb1/2 proteins protect the cell from imbalances in the production of mitochondrial proteins. Such imbalances appear to cause a stochastic stratification of the yeast population with the appearance of short-lived cells. Ras2p impacts this process. Maintenance of mitochondrial membrane potential and the provision of Krebs cycle intermediates for biosyntheses appear to be crucial elements in yeast longevity. In sum, it is clear that mitochondria lie at the nexus of yeast longevity and aging."xsd:string |
| http://purl.uniprot.org/citations/15489194 | http://purl.org/dc/terms/identifier | "doi:10.1016/j.femsyr.2004.04.005"xsd:string |
| http://purl.uniprot.org/citations/15489194 | http://purl.uniprot.org/core/author | "Jazwinski S.M."xsd:string |
| http://purl.uniprot.org/citations/15489194 | http://purl.uniprot.org/core/date | "2004"xsd:gYear |
| http://purl.uniprot.org/citations/15489194 | http://purl.uniprot.org/core/name | "FEMS Yeast Res"xsd:string |
| http://purl.uniprot.org/citations/15489194 | http://purl.uniprot.org/core/pages | "119-125"xsd:string |
| http://purl.uniprot.org/citations/15489194 | http://purl.uniprot.org/core/title | "Yeast replicative life span--the mitochondrial connection."xsd:string |
| http://purl.uniprot.org/citations/15489194 | http://purl.uniprot.org/core/volume | "5"xsd:string |
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