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Updated: Jun 7, 2025

Generation of Marked and Markerless Mutants in Model Cyanobacterial Species

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在细胞分解细菌Clostridium cellulovorans中使用基于codBA的反选择技术无标记删除假定类型I和III的限制-修改系统

Luciana Almeida¹, Aline Schöllkopf¹, Holger Edelmann¹

¹Chair of Microbiology, Technical University of Munich, Freising, Germany.

Journal of biotechnology

|November 10, 2024

概括

一个新的遗传系统使Clostridium cellulovorans的代谢工程成为可能,以改善菌生物质发酵. 该系统克服了这一关键工业微生物的遗传工具开发方面的挑战.

科学领域:

微生物学微生物学
生物技术是生物技术.
合成生物学合成生物学

背景情况:

红细胞核生物质 (LB) 是商品化学生产的一个有前途的基质.
克洛斯特里细胞毒素有效地分解LB,但缺乏代谢工程工具来增强溶剂的生产.

研究的目的:

开发一个强大的基因系统,用于工程Clostridium cellulovorans.
为了使价值的化学物质从树脂纤维素生物质的增强生产.

主要方法:

开发了使用Gram阳性复制起源的删除向量.
通过使用 codBA 磁带和 5-fluorocytosine 实施了一种有效的反选择策略.
通过删除I型和III型限制修改系统来设计无限制的菌株.

主要成果:

建立了Clostridium cellulovorans菌株工程的功能性遗传系统.
创建了没有限制的菌株 (C. cellulovorans ΔClocel_1114和C. cellulovorans ΔClocel_2651). 这些菌株是C.
在工程菌株中证明了高结合效率.

结论:

开发的遗传系统促进了Clostridium cellulovorans的代谢工程.
没有限制的菌株可用于工业应用的进一步基因改造.
这项工作推进了用于可持续化学品生产的纤维素生物质的使用.

关键词:

结合效率的效率结合效率没有标记的基因编辑.等离子体复制号码的复制号码.等离子体稳定性测定试验伪自杀的复制品onon 限制系统的限制系统.

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