微生物发酵化工生产转运体筛选新技术。

IF 0.8 4区 生物学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Kei Nanatani, Tomoko Ishii, Ayumu Masuda, Satoshi Katsube, Tasuke Ando, Hiroshi Yoneyama, Keietsu Abe
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引用次数: 0

摘要

在利用微生物发酵生产化合物的过程中,除了细胞内代谢修饰外,对负责底物摄取和产物外排的转运体活性的控制从生产力的角度来看是重要的。然而,在微生物膜转运蛋白的功能分析方面进展甚微,而且由于很难找到转运目标化合物的转运蛋白,只有少数转运蛋白被投入实际应用。本研究以融合伴侣基因mstX为载体构建谷氨酸棒状杆菌源性转运蛋白表达文库(CgTP-Express文库),并采用双肽L-Ala-L-Ala补食法在文库中寻找丙氨酸出口蛋白。在39个基因库中,筛选出5个候选丙氨酸输出基因(NCgl2533、NCgl2683、NCgl0986、NCgl0453和NCgl0929);NCgl2533的表达增加了细胞培养中丙氨酸浓度。因此,CgTP-Express库对于寻找新的候选转运蛋白是有效的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Novel transporter screening technology for chemical production by microbial fermentation.

In the fermentative production of compounds by using microorganisms, control of the transporter activity responsible for substrate uptake and product efflux, in addition to intracellular metabolic modification, is important from a productivity perspective. However, there has been little progress in analyses of the functions of microbial membrane transporters, and because of the difficulty in finding transporters that transport target compounds, only a few transporters have been put to practical use. Here, we constructed a Corynebacterium glutamicum-derived transporter expression library (CgTP-Express library) with the fusion partner gene mstX and used a peptide-feeding method with the dipeptide L-Ala-L-Ala to search for alanine exporters in the library. Among 39 genes in the library, five candidate alanine exporters (NCgl2533, NCgl2683, NCgl0986, NCgl0453, and NCgl0929) were found; expression of NCgl2533 increased the alanine concentration in cell culture. The CgTP-Express library was thus effective for finding a new transporter candidate.

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来源期刊
Journal of General and Applied Microbiology
Journal of General and Applied Microbiology 生物-生物工程与应用微生物
CiteScore
2.40
自引率
0.00%
发文量
42
审稿时长
6-12 weeks
期刊介绍: JGAM is going to publish scientific reports containing novel and significant microbiological findings, which are mainly devoted to the following categories: Antibiotics and Secondary Metabolites; Biotechnology and Metabolic Engineering; Developmental Microbiology; Environmental Microbiology and Bioremediation; Enzymology; Eukaryotic Microbiology; Evolution and Phylogenetics; Genome Integrity and Plasticity; Microalgae and Photosynthesis; Microbiology for Food; Molecular Genetics; Physiology and Cell Surface; Synthetic and Systems Microbiology.
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