Reshaping the substrate‐binding pocket of acyl‐ACP reductase to enhance the production of sustainable aviation fuel in Escherichia coli

IF 3.5 2区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Biotechnology and Bioengineering Pub Date : 2024-10-16 DOI:10.1002/bit.28863

Jiahu Han, Takuya Matsumoto, Ryosuke Yamada, Hiroyasu Ogino

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Abstract

To reduce carbon emissions and address environmental concerns, the aviation industry is exploring the use of sustainable aviation fuel (SAF) as an alternative to traditional fossil fuels. In this context, bio‐alkane is considered a potentially high‐value solution. The present study focuses on the enzymes acyl‐acyl carrier protein [ACP] reductase (AAR) and aldehyde‐deformylating oxygenase (ADO), which are crucial enzymes for alka(e)ne biosynthesis. By using protein engineering techniques, including semi‐rational design and site‐directed mutagenesis, we aimed to enhance the substrate specificity of AAR and improve alkane production efficiency. The co‐expression of a modified AAR (Y26G/Q40M mutant) with wild‐type ADO in Escherichia coli significantly increased alka(e)ne production from 28.92 mg/L to 167.30 mg/L, thus notably demonstrating a 36‐fold increase in alkane yield. This research highlights the potential of protein engineering in optimizing SAF production, thereby contributing to the development of more sustainable and efficient SAF production methods and promoting greener air travel.

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重塑酰基-ACP 还原酶的底物结合袋，提高大肠杆菌可持续航空燃料的产量

为了减少碳排放和解决环境问题，航空业正在探索使用可持续航空燃料（SAF）来替代传统化石燃料。在这种情况下，生物烷烃被认为是一种潜在的高价值解决方案。本研究的重点是酰基-酰基载体蛋白[ACP]还原酶（AAR）和醛脱甲酰氧合酶（ADO），它们是烯烃生物合成的关键酶。我们利用蛋白质工程技术，包括半理性设计和定点突变，旨在增强 AAR 的底物特异性，提高烷烃的生产效率。在大肠杆菌中共同表达修饰的AAR（Y26G/Q40M突变体）和野生型ADO后，烷烃产量从28.92毫克/升显著增加到167.30毫克/升，从而证明烷烃产量增加了36倍。这项研究凸显了蛋白质工程在优化烷烃生产方面的潜力，从而有助于开发更可持续、更高效的烷烃生产方法，促进绿色航空旅行。

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来源期刊

Biotechnology and Bioengineering 工程技术-生物工程与应用微生物

CiteScore

7.90

自引率

5.30%

发文量

280

审稿时长

2.1 months

期刊介绍： Biotechnology & Bioengineering publishes Perspectives, Articles, Reviews, Mini-Reviews, and Communications to the Editor that embrace all aspects of biotechnology. These include: -Enzyme systems and their applications, including enzyme reactors, purification, and applied aspects of protein engineering -Animal-cell biotechnology, including media development -Applied aspects of cellular physiology, metabolism, and energetics -Biocatalysis and applied enzymology, including enzyme reactors, protein engineering, and nanobiotechnology -Biothermodynamics -Biofuels, including biomass and renewable resource engineering -Biomaterials, including delivery systems and materials for tissue engineering -Bioprocess engineering, including kinetics and modeling of biological systems, transport phenomena in bioreactors, bioreactor design, monitoring, and control -Biosensors and instrumentation -Computational and systems biology, including bioinformatics and genomic/proteomic studies -Environmental biotechnology, including biofilms, algal systems, and bioremediation -Metabolic and cellular engineering -Plant-cell biotechnology -Spectroscopic and other analytical techniques for biotechnological applications -Synthetic biology -Tissue engineering, stem-cell bioengineering, regenerative medicine, gene therapy and delivery systems The editors will consider papers for publication based on novelty, their immediate or future impact on biotechnological processes, and their contribution to the advancement of biochemical engineering science. Submission of papers dealing with routine aspects of bioprocessing, description of established equipment, and routine applications of established methodologies (e.g., control strategies, modeling, experimental methods) is discouraged. Theoretical papers will be judged based on the novelty of the approach and their potential impact, or on their novel capability to predict and elucidate experimental observations.