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通过二维转录组分析识别了Pseudomonas putida中可靠的基因组集成站点

Sebastian Köbbing¹, Thorsten Lechtenberg², Benedikt Wynands²

¹Aachen Biology and Biotechnology-ABBt, Institute of Applied Microbiology-iAMB, RWTH Aachen University, 52074 Aachen, Germany.

ACS synthetic biology

|July 5, 2024

概括

研究人员为Pseudomonas putida确定了新的基因组着陆,使得基因表达稳定,独立于条件. 这扩大了用于 Pseudomonads 中高级代谢工程的遗传工具箱.

科学领域:

微生物学微生物学
合成生物学合成生物学
基因组学就是基因组学.

背景情况:

基因组集成对于工程微生物生产宿主至关重要.
有限的特征集成点阻碍了需要多个基因插入的先进菌株工程.

研究的目的:

为了识别和表征新的基因组整合地点 (着陆台) 在*Pseudomonas putida* KT2440.
为了实现先进的代谢工程的条件独立的异质基因表达.

主要方法:

RNA-Seq数据分析以确定具有稳定表达模式的基因组区域.
同源重组将记者基因录音带插入到已识别的基因间部位.
使用绝缘探头传感器进行局部依赖表达分析.

主要成果:

在 *P. putida* KT2440.0 中确定并描述了十个新型着陆.
在单个着陆中观察到表达的高可重现性.
在不同的着陆台之间发现了表达水平的显著差异,这表明基因组背景的影响.
四个着陆台被验证为 * Pseudomonas taiwanensis * VLB120.

结论:

基因组背景显著影响基因表达,产生"热点"和"冷点".
已识别的着陆为 Pseudomonads 的增强代谢工程提供了宝贵的工具.
这项工作扩大了可用的基因组站点,以实现稳定和可预测的基因表达.

关键词:

伪omonas putida可以使用.基因组整合基因组整合不同基因表达的异构基因表达.代谢工程是代谢工程.合成生物学合成生物学合成促进剂合成促进剂

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