Variations in mRNA transcript levels of cell wall-associated genes of Saccharomyces cerevisiae following spheroplasting.

Variations in mRNA transcript levels of cell wall-associated genes of Saccharomyces cerevisiae following spheroplasting.
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原生质球形成后酿酒酵母细胞壁相关基因 mRNA 转录水平的变化。

DOI:
10.1111/j.1574-6968.1999.tb08842.x
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发表时间:
1999
影响因子:
2.1
通讯作者:
Chaffin,WL
Chaffin,WL
中科院分区:
生物学4区
文献类型:
--
作者:
Braley,R;Chaffin,WL

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对酿酒酵母原生质体再生过程中38个基因的mRNA转录水平进行了研究。许多选择的基因参与细胞壁生物合成。在实验过程中,原生质球不能再生为具有再生能力的细胞。然而,在mRNA水平上,实验群体和对照群体之间的转录物数量发生了变化。KRE 11、EGT 2和MSS 10在尝试原生质球再生期间的转录物水平增加了10倍以上。另外六个基因,FLO1,TIR1,SED1,HKR 1,YGR 189和MUC1,显示转录水平增加至少5倍。结果表明,在PMT2基因中,SKT5、KRE1、KRE5、SEC53和DHS 1基因的转录水平从检测不到的水平上升到检测到的水平。因此,细胞应激基因、生物合成基因和一些糖基磷脂酰肌醇锚定的细胞壁蛋白在再生原生质球中的转录水平增加,但它们的转录不足以启动液体培养基中细胞壁的替换。
mRNA transcript levels of 38 genes fromSaccharomyces cerevisiaewere investigated during attempted spheroplast regeneration. Many of the genes selected are involved in cell wall biosynthesis. Spheroplasts did not regenerate into osmotically competent cells during the experiment. However, at a mRNA level, the quantities of transcripts were altered between the experimental and control populations.KRE11,EGT2andMSS10had their transcript levels increased by more than 10-fold during attempted spheroplast regeneration. A further six genes,FLO1,TIR1,SED1,HKR1,YGR189andMUC1, showed transcript level increases of at least 5-fold. Five genes showed a change in transcript levels from an undetectable level to a detectable level:SKT5,KRE1,KRE5,SEC53andDHS1.PMT2showed a rapid decrease in mRNA levels followed by an increase to the basal level. Thus, cell stress genes, biosynthetic genes and some glycosylphosphatidylinositol-anchored cell wall proteins have their transcript levels increased in regenerating spheroplasts, but their transcription was not sufficient to initiate the replacement of the cell wall in liquid medium.
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