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Volume-related mitochondrial deoxyribonucleic acid synthesis in zygotes and vegetative cells of Saccharomyces cerevisiae.

By E Lee and B F Johnson

Abstract

The synthesis of mitochondrial deoxyribonucleic acid (DNA) in Saccharomyces cerevisiae cells has been examined during conjugation, in preconjugal conditions, and in control cultures that were not exposed to obverse diffusible sex factors. The ratios of mitochondrial to nuclear DNA varied from about 0.1 in control cells, to about 0.3 in alpha cells exposed for 180 min to cell-free culture medium from a cells, and to about 0.4 in conjugating cells 150 min after mixing. The enhanced levels of mitochondrial DNA during preconjugal and conjugal conditions seem correlated with enhanced cell volumes. Likewise, amounts of mitochondrial DNA in vegetative cells were found to be correlated with cytoplasmic volumes

Topics: Research Article
Year: 1977
OAI identifier: oai:pubmedcentral.nih.gov:235047
Provided by: PubMed Central
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