新型固碳途径—3-羟基丙酸循环的研究进展

The progress of studies on a unique carbon dioxide fixation pathway: 3-hydroxypropionate cycle

摘要:

3-羟基丙酸循环是一种存在于嗜热光合绿丝菌中新型的CO2固定途径。此循环的特征代谢中间物为?3-羟基丙酸, 该化合物可用于合成许多重要的化工产品, 具有很高的工业价值。本文介绍了?3-羟基丙酸循环固碳途径的发现、反应机理的逐步阐明过程及最新的研究进展, 并对其理论意义和在绿色化工中的应用前景进行了探讨。

Abstract:

A novel carbon dioxide fixation pathway, 3-hydroxypropionate cycle, has been discovered in thermophilic filamentous photosynthetic bacteria such as Chloroflexus aurantiacus, which can grow in several conditions. The characteristic of this pathway is 3-hydroxypropionate as a metabolic intermediate, which can be used for synthesis of many valuable products in industry. In this minireview, the discovery of this unique biosynthetic process, the development of the reaction mechanism and the latest progress are introduced, especially the involvement of several multifunction enzymes. Besides theoretical significance, potential biotechnological applications of the 3-hydroxypropionate pathway are also discussed.