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识别和功能分析与抗压力相关的新型蛋白编码序列

Joshelin Huanca-Juarez^1,2, Edson Alexandre Nascimento-Silva^1,2, Ninna Hirata Silva¹

¹Department of Cell and Molecular Biology, Ribeirão Preto School of Medicine (FMRP) - University of São Paulo (USP), São Paulo, Brazil.

Frontiers in microbiology

|October 16, 2023

概括

研究人员发现了来自极端环境的新型基因,以提高工业生物制品的细菌强度. 一个基因显著提升了大肠杆菌.

科学领域:

微生物学微生物学
生物技术是生物技术.
基因组学就是基因组学.

背景情况:

与化学生产相比,传统的微生物宿主限制了工业生物产品的竞争力.
开发强壮的细菌,增强对特定过程压力的耐受性,对生物技术至关重要.
来自极端环境的超基因组方法为改善细菌强度提供了新的遗传资源.

研究的目的:

从元基因组数据中识别和描述新的蛋白质编码序列,使其具有抗压能力.
设计基因结构,以提高细菌对各种工业过程条件的耐药性.
评估这些新型基因在增强微生物对多种压力因素的耐受性方面的潜力.

主要方法:

使用隐藏的马尔科夫模型 (HMM) 分析来挖掘来自极端环境的元基因组分序数据.
鉴定和表征了10个新的蛋白质编码序列,包括与DNA结合蛋白HU,ATP依赖蛋白酶ClpP和伴侣蛋白DnaJ相关的序列.
在大肠杆菌中表达了已识别的基因,并评估了对高温,酸度,氧化,透应激和紫外线辐射的耐受性.

主要成果:

成功识别了10个与抗压力相关的新型蛋白质编码序列.
在大肠杆菌中表达时,五个已识别的基因对至少两种不同的压力条件产生了耐药性.
来自酸性土壤元基因组的一个新型HU编码基因增强了大肠杆菌对四种不同的压力条件的耐受性.

结论:

来自极端环境的新型蛋白质编码序列可以显著提高细菌的抗压能力.
鉴定到的HU编码基因对构建用于工业应用的合成电路以扩大细菌耐药性的潜力有希望.
这项研究为设计强大的微生物细胞工厂提供了有价值的遗传工具,用于增强生物产品制造.

关键词:

细菌的强度细菌的强度工业生物技术工业生物技术转基因组学是指转基因组学.抗压力抗压力抗压力合成生物学合成生物学

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