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Microarray Analysis for Saccharomyces cerevisiae
Published on: April 7, 2011
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在酵母中蛋白质表达的全球分析
Sina Ghaemmaghami1, Won-Ki Huh, Kiowa Bower
1Howard Hughes Medical Institute, University of California-San Francisco, San Francisco, California 94143-2240, USA.
Nature
|October 17, 2003
概括
研究人员创建了一个Saccharomyces cerevisiae融合库,用于全球蛋白质分析. 这项研究量化了蛋白质水平,揭示了超越mRNA表达的细胞状态的洞察力.
科学领域:
- 蛋白质组学是指蛋白质组学.
- 分子生物学分子生物学
- 酵母遗传学 酵母遗传学
背景情况:
- 基因组和mRNA表达数据提供了洞察力,但不能完全捕捉细胞状态.
- 转录后调节使mRNA作为蛋白质活性代理物的使用变得复杂.
- 了解蛋白质活性对于解释生物系统至关重要.
研究的目的:
- 开发一种方法,用于对Saccharomyces cerevisiae的全球蛋白质分析.
- 为所有开放的阅读框架创建一个融合库,用于表位标记.
- 量化蛋白质表达水平和识别错误注释的基因.
主要方法:
- 构建一个Saccharomyces cerevisiae融合库,带有位标记的开放阅读框架.
- 标记蛋白质从它们的原生染色体位置表达.
- 常见标签的免疫检测以量化蛋白质丰富度.
主要成果:
- 大约80%的蛋白质组在日志相生长过程中得到表达.
- 使用蛋白质表达数据对错误注释的基因进行系统识别.
- 蛋白质的丰富程度差异很大,从每细胞不到50个到超过106个分子.
- 许多必不可少的蛋白质和转录因子以低水平表达,其他蛋白质组方法无法检测到.
结论:
- 融合图书馆使酵母酵母的全面蛋白质组分析成为可能.
- 蛋白质水平并不总是与mRNA水平或编码子偏差相关.
- 这种方法揭示了以前无法检测到的蛋白质表达,这对细胞功能至关重要.
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