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Comparison of the levels of the 21S mitochondrial rRNA in derepressed and glucose-repressed Saccharomyces cerevisiae.

机译:抑制和抑制葡萄糖酿酒酵母中21S线粒体rRNA水平的比较。

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A cDNA preparation, synthesized by using Saccharomyces cerevisiae mitochondrial RNA as template and oligodeoxythymidylic acid as primer, was found to specifically hybridize to the mitochondrial 21S rRNA by the following criteria: (i) it hybridizes only to the 21S RNA species in mitochondrial RNA and not to RNA from a [rho0] mutant, and (ii) it hybridizes to fragments in restriction digests of mitochondrial DNA that contain the 21S rRNA gene but not to nuclear DNA. This cDNA was used as a probe to demonstrate that a 2.6-fold decrease in the cellular level of the mitochondrial large rRNA is associated with glucose repression of mitochondrial function in S. cerevisiae. A corresponding decrease in the level of mitochondrial DNA was not observed.
机译:发现以酿酒酵母线粒体RNA为模板,寡聚脱氧胸苷酸为引物合成的cDNA制备物,可通过以下标准与线粒体21S rRNA特异性杂交:(i)仅与线粒体RNA中的21S RNA物种杂交,而未与(ii)与含有21S rRNA基因的线粒体DNA限制性酶切片段杂交,但不与核DNA杂交。将该cDNA用作探针,以证明线粒体大rRNA的细胞水平降低2.6倍与酿酒酵母中线粒体功能的葡萄糖抑制有关。没有观察到线粒体DNA水平的相应降低。

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