使用易发生错误的复制和双重选择的riboswitch的T7菌体辅助进化
Eduardo Goicoechea Serrano1,2, Carlos Blázquez-Bondia1, Alfonso Jaramillo3,4
1Warwick Integrative Synthetic Biology Centre and School of Life Sciences, University of Warwick, Coventry, CV4 7AL, UK.
Scientific reports
|January 29, 2024
概括
我们开发了T7AE,一种新的菌体进化系统,以有效地选择功能性神氨酸核糖开关. 这种方法丰富了合成生物学应用的基因开关.
科学领域:
- 合成生物学 合成生物学
- 分子生物学分子生物学
- RNA生物学的RNA生物学
背景情况:
- рибо开关是调节基因表达的非编码RNA传感器.
- 选择和发展功能性核糖突变器是具有挑战性的.
- 现有的方法在丰富这些遗传传感器方面缺乏效率.
研究的目的:
- 开发一种基于菌体的新型系统,用于理论蛋白核糖开关的进化.
- 创建一种双选择方法,以在ON和OFF状态下丰富功能性核糖开关.
- 为了证明T7AE系统在进化一套riboswitch变体库中的有效性.
主要方法:
- 通过将DNA聚合酶替换成一种由神氨酸核糖开关控制的转录因子来改造菌体T7.
- 创建了两个具有特定基因 (cmk或pifA) 的宿主环境,用于双重选择.
- 将T7AE系统应用于一个65,536个随机分类的 рибо交换机变体库.
主要成果:
- 从一个大图书馆成功丰富了功能性神氨酸核糖开关.
- 在Riboswitch的ON (cmk主机) 和OFF (pifA主机) 状态中都显示了选择.
- 观察到对编码 рибо交换机的菌体的丰富,从而赋予了健身优势.
结论:
- T7AE系统为不断发展的基因开关提供了一个强大的新工具,包括基于非编码RNA的传感器.
- 这种技术通过使基于RNA的新型调节元件的开发,促进了合成生物学的进步.
- 双选择机制为选择功能性 рибо开关提供了一个强大的方法.
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