Production of three O-methhylated esculetins with Escherichia coli expressing O-methyltransferase from poplar.
O-Methyltransferase, POMT-9 was expressed in Escherichia coli. HPLC analysis of reaction products revealed three peaks corresponding to isoscopoletin, scopoletin, and scoparone, and their structures were determined using NMR. Biotransformation of esculetin with E. coli expressing POMT-9 generated scopoletin, isoscopoletin, and scoparone at 30.3, 21, and 31 microM respectively. POMT-9 is the first O-methyltransferase that produces three different O-methylated products.
Kim
Bong Gyu
BG
Bio/Molecular Informatics Center, Department of Bioscience and Biotechnology, Konkuk University, Seoul, Korea.
Lee
Youngshim
Y
Hur
Hor-Gil
HG
Lim
Yoongho
Y
Ahn
Joong-Hoon
JH
D001711:Biotransformation; D002851:Chromatography, High Pressure Liquid; D003374:Coumarins / Q000032:analysis / Q000378:metabolism; D004926:Escherichia coli / Q000235:genetics* / Q000378:metabolism; D007218:Industrial Microbiology; D008745:Methylation; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D032107:Populus / Q000201:enzymology* / Q000235:genetics; D011497:Protein O-Methyltransferase / Q000235:genetics / Q000378:metabolism*; D012603:Scopoletin / Q000032:analysis / Q000378:metabolism; D014468:Umbelliferones / Q000378:metabolism*
D003374:Coumarins; D010940:Plant Proteins; D014468:Umbelliferones; D011497:Protein O-Methyltransferase; C018145:scoparone; D012603:Scopoletin; C007628:esculetin