合成染色体巩固的合成,调试和影响:synVI及以后
Leslie A Mitchell1,2, Ann Wang3,4, Giovanni Stracquadanio3,5,6
1Department of Biochemistry and Molecular Pharmacology, New York University Langone School of Medicine, New York, NY 10016, USA.
概括
研究人员创建了一个合成酵母染色体VI (synVI),识别了影响蛋白质组积累的PRE4基因缺陷. 合成染色体的整合揭示了全球的小变化,为设计性真核生物基因组铺平了道路.
科学领域:
- 合成生物学
- 基因组学
- 分子和细胞生物学
背景情况:
- 该项目旨在构建合成酵母基因组.
- 了解大规模基因组变化的影响至关重要.
研究的目的:
- 设计,组装和表征合成酵母染色体VI (synVI).
- 研究将多个合成染色体合并为单一菌株的后果.
- 识别遗传"虫子"及其表型影响.
主要方法:
- 快速组装和 synVI 的特征.
- 蛋白质组分析以确定蛋白质积累缺陷.
- 多合成菌株的表型,转录和全蛋白分析.
主要成果:
- 在 synVI 中的一种线粒体缺陷与 PRE4 的同义编码变化有关,使 Pre4 蛋白减少了一半.
- 将16个合成染色体整合成一个多合成菌株揭示了与HIS2转录相关的"错误".
- 广泛的基因组变化 (6%的基因组) 在奥米克分析中没有引起重大全球变化.
结论:
- 合成的VI染色体组合和表征是成功的.
- 合成染色体的巩固可以引入特定的缺陷,但不会导致广泛的奥米克破坏.
- 这项工作推动了设计合成真核体基因组的创建.
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