Biotechnology Bulletin ›› 2025, Vol. 41 ›› Issue (3): 14-24.doi: 10.13560/j.cnki.biotech.bull.1985.2024-1038

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Advances on Molecular Modifications of Formate Dehydrogenase for CO₂ Reduction

LU Feng1(), HUANG Yu-hong2, LIN Yan-na3, MA Fu-qiang1()   

  1. 1.Medical Enzyme Engineering Center, CAS Key Lab of Bio-Medical Diagnostics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163
    2.Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190
    3.Shandong Lab of Advanced Biomaterials and Medical Devices in Weihai, Weihai 264210
  • Received:2024-10-24 Online:2025-03-26 Published:2025-03-20
  • Contact: MA Fu-qiang E-mail:luf@sibet.ac.cn;mafuqiang318@sibet.ac.cn

Abstract:

With the urgent global demand for sustainable energy transformation and greenhouse gas emission reduction, the efficient green conversion of CO2 has become a research hotspot in various fields such as energy, environmental science, and chemical engineering. Especially in the context of combating climate change, CO₂ capture and utilization is seen as one of the key strategies to achieve carbon neutrality. Formate dehydrogenase (FDH) as an important biocatalyst for reducing CO₂ to formate, has shown significant potential in green chemistry and bioenergy conversion. However, it still has certain limitations regarding catalytic activity, thermal stability, and coenzyme specificity. In recent years, with the continuous development of protein engineering technology and molecular biology, researchers have proposed a variety of strategies to modify the performance of FDH, significantly enhancing its application prospects. For example, enzyme engineering means such as directed mutation and structure optimization can improve the substrate affinity of the enzyme, enhance the rigidity and conformational stability of the enzyme, and change the coenzyme binding site to broaden its application prospects in the process of green transformation. In this paper, the research progress of FDH catalytic CO2 reduction in recent years will be comprehensively summarized, focusing on the improvement measures of FDH in terms of catalytic efficiency, thermal stability, coenzyme specificity, etc., the specific strategies adopted in the molecular transformation process will be discussed, and the rules of these strategies will be summarized, in order to provide new ideas and methods for the molecular transformation of FDH in the future and promote the development of its application in CO₂ reduction reaction. In addition, with the development of artificial intelligence, machine learning, gene editing and other technologies, the molecular modification of FDH will be more efficient and precise in the future, and these emerging technologies are expected to screen out FDH mutants with excellent performance in a short time, providing a feasible green solution in solving the global climate change and energy crisis.

Key words: CO? reduction, formate dehydrogenase, molecular modification, catalytic efficiency, thermal stability, cofactor specificity, formate, NAD?/NADH