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A sustainable strategy for biosynthesis of Rebaudioside D using a novel glycosyltransferase of Solanum tuberosum

Biotechnol J. 2024-02; 
Siyuan Ma, Yuanyuan Ma
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Codon Optimization … The StUGT, CaUGT, and BdUGT genes were codon-optimized and synthesized by GenScript (Nanjing, China), and the synthesized genes were then inserted into NcoI and XhoI sites of … Get A Quote

摘要

Bioconversion of Rebaudioside D faces high-cost obstacles. Herein, a novel glycosyltransferase StUGT converting Rebaudioside A to Rebaudioside D was screened and characterized, which exhibits stronger affinity and substrate specificity for Rebaudioside A than previously reported enzymes. A whole-cell catalytic system was thus developed using the StUGT strain. The production of Rebaudioside D was enhanced significantly by enhancing cell permeability, and the maximum production of 6.12?g/L and the highest yield of 98.08% by cell catalyst was obtained by statistical-based optimization. A new cascade process utilizing this recombinant strain and E. coli expressing sucrose synthase was further established to reduce... More

關(guān)鍵詞

Rebaudioside D, StUGT, UDP-glycosyltransferase, cascade reaction, whole-cell catalysis
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