A regio-specific 4--methyltransferase from  regiospecifically catalyzing 8-prenylkeampferol to icaritin.

J Asian Nat Prod Res

State Key Laboratory of Bioactive Substance and Function of Natural Medicines, CAMS Key Laboratory of Enzyme and Biocatalysis of Natural Drugs; and NHC Key Laboratory of Biosynthesis of Natural Products, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical Colleg

Published: April 2025


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Article Abstract

is widely used in traditional Chinese medicine and contains rich bioactive compounds. These compounds often have a methyl group at their 4'-OH position catalyzed by methyltransferases. Therefore, studying methyltransferases in plants is of great significance. In this study, a flavonol methyltransferase, EpOMT4, was isolated from B.L. Guo. The recombinant enzyme regiospecifically transferred a methyl group to the 4'-OH position of 8-prenylkaempferol forming icaritin. The study demonstrates that enzymatic methylation of flavonoids in plants holds significant potential and could provide a promising alternative method for the biosynthetic production of bioactive methylated prenylflavonoids.

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http://dx.doi.org/10.1080/10286020.2024.2411710DOI Listing

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