Metabolic engineering for the synthesis of steviol glycosides: current status and future prospects
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY(2021)
Abstract
With the pursuit of natural non-calorie sweeteners, steviol glycosides (SGs) have become one of the most popular natural sweeteners in the market. The SGs in Stevia are a mixture of SGs synthesized from steviol (a terpenoid). SGs are diterpenoids. Different SGs depend on the number and position of sugar groups on the core steviol backbone. This diversity comes from the processing of glycoside steviol by various glycosyltransferases. Due to the differences in glycosylation, each SG has unique sensory properties. At present, it is more complicated to extract high-quality SGs from plants, so the excavation of the metabolic pathways of engineered microorganisms to synthesize SGs has been extensively studied. Specifically, the expression of different glycosyltransferases in microbes is key to the synthesis of various SGs by engineered microorganisms. To trigger more researches on the functional characterization of the enzymes encoded by these genes, this review describes the latest research progresses of the related enzymes involved in SG biosynthesis and metabolic engineering. Key points • Outlines the research progress of key enzymes in the biosynthetic pathway of SGs • Factors affecting the catalytic capacity of stevia glucosyltransferase • Provide guidance for the efficient synthesis of SGs in microbial cell factories Graphical abstract
MoreTranslated text
Key words
Steviol glycosides, Biosynthetic pathways, Metabolic engineering, Enzyme Engineering, Uridine diphosphate glycosyltransferases
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined