title: Production of three O-methhylated esculetins with Escherichia coli expressing O-methyltransferase from poplar.
abstract: 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.
authors.affiliation: Bio/Molecular Informatics Center, Department of Bioscience and Biotechnology, Konkuk University, Seoul, Korea.
authors.forename: Bong Gyu
authors.initials: BG
authors.lastname: Kim
authors.forename: Youngshim
authors.initials: Y
authors.lastname: Lee
authors.forename: Hor-Gil
authors.initials: HG
authors.lastname: Hur
authors.forename: Yoongho
authors.initials: Y
authors.lastname: Lim
authors.forename: Joong-Hoon
authors.initials: JH
authors.lastname: Ahn
mesh_terms: 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*
chemical_list: D003374:Coumarins; D010940:Plant Proteins; D014468:Umbelliferones; D011497:Protein O-Methyltransferase; C018145:scoparone; D012603:Scopoletin; C007628:esculetin