藻类聚焦转移酶和硫转移酶在大肠杆菌中的异源表达

IF 3.7 3区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biochemical Engineering Journal Pub Date : 2025-02-18 DOI:10.1016/j.bej.2025.109690

Ahmed Zayed , Benjamin Ledermann , Thomas Fischöder , Lothar Elling , Nicole Frankenberg-Dinkel , Roland Ulber

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引用次数: 0

摘要

在基因组学和生物信息学研究之后，人们提出了一种替代传统生产岩藻多糖的酶法合成方法。本研究旨在评估大肠杆菌BL21 （DE3）中表达的四种可能的藻类酶的活性，包括聚焦转移酶（FucTs_21和FucTs_50）和碳水化合物硫转移酶（STs_32和STs_283），以便将来在实验室合成岩藻多糖的过程中应用。比活度为0.47 pmol.min−1。在糖基转移酶活性测定中，FucTs_50的浓度为µg−1，而多重毛细管电泳（MP-CE）显示，几乎32% %的GDP-L-病灶受到影响。此外，使用通用硫转移酶活性试剂盒对STs进行了评估，结果表明STs_283和STs_32在2.29和2.38 pmol.min−1时具有特异性活性。分别µg−1。结果表明，正确折叠的活性酶具有相应底物特异性的结合位点。

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Heterologous expression of algal fucosyltransferases and sulfotransferases in Escherichia coli

Alternative to classical production of fucoidans, enzymatic synthesis has been proposed especially following genomic and bioinformatic investigations in Ectocarpus siliculosus and Saccharina sp. The present research aimed to assess the activity of four putative algal enzymes, including fucosyltransferases (FucTs_21 and FucTs_50) and carbohydrate sulfotransferases (STs_32 and STs_283) expressed in E. coli BL21 (DE3) for future application in lab-synthesized fucoidans. A specific activity of 0.47 pmol.min⁻¹.µg⁻¹ was observed for FucTs_50 in the Glycosyltransferase activity assay, while multiplexed capillary electrophoresis (MP-CE) revealed that almost 32 % of GDP-L-fucose was affected. Additionally, the Universal Sulfotransferase Activity Kit was used to evaluate STs, and the results indicated that STs_283 and STs_32 exhibited specific activities at 2.29 and 2.38 pmol.min⁻¹.µg⁻¹, respectively. The results indicated correctly folded active enzymes with binding sites specific to their corresponding substrates.

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来源期刊

Biochemical Engineering Journal 工程技术-工程：化工

CiteScore

7.10

自引率

5.10%

发文量

380

审稿时长

34 days

期刊介绍： The Biochemical Engineering Journal aims to promote progress in the crucial chemical engineering aspects of the development of biological processes associated with everything from raw materials preparation to product recovery relevant to industries as diverse as medical/healthcare, industrial biotechnology, and environmental biotechnology. The Journal welcomes full length original research papers, short communications, and review papers* in the following research fields: Biocatalysis (enzyme or microbial) and biotransformations, including immobilized biocatalyst preparation and kinetics Biosensors and Biodevices including biofabrication and novel fuel cell development Bioseparations including scale-up and protein refolding/renaturation Environmental Bioengineering including bioconversion, bioremediation, and microbial fuel cells Bioreactor Systems including characterization, optimization and scale-up Bioresources and Biorefinery Engineering including biomass conversion, biofuels, bioenergy, and optimization Industrial Biotechnology including specialty chemicals, platform chemicals and neutraceuticals Biomaterials and Tissue Engineering including bioartificial organs, cell encapsulation, and controlled release Cell Culture Engineering (plant, animal or insect cells) including viral vectors, monoclonal antibodies, recombinant proteins, vaccines, and secondary metabolites Cell Therapies and Stem Cells including pluripotent, mesenchymal and hematopoietic stem cells; immunotherapies; tissue-specific differentiation; and cryopreservation Metabolic Engineering, Systems and Synthetic Biology including OMICS, bioinformatics, in silico biology, and metabolic flux analysis Protein Engineering including enzyme engineering and directed evolution.