Hydroxylation of ionized aromatics including carboxylic acid or amine using recombinant Streptomyces lividans cells expressing modified biphenyl dioxygenase genes
作者:Kazutoshi Shindo、Ryoko Nakamura、Ikuko Chinda、Yasuo Ohnishi、Sueharu Horinouchi、Haruko Takahashi、Kazuo Iguchi、Shigeaki Harayama、Kensuke Furukawa、Norihiko Misawa
DOI:10.1016/s0040-4020(03)00180-7
日期:2003.3
The bphA1(2072)A2A3A4 gene cluster codes for a shuffled biphenyl dioxygenase holoenzyme with broad substrate specificity. These bphA1(2072)A2A3A4 genes were expressed in the actinomycetes Streptomyces lividans using a thiostrepton-inducible promoter P(tipA). Biotransformation experiments of various aromatics including carboxylic acid or amine in their molecular structure, such as 1-naphthoic acid, 2-(1-naphthyl)acetic acid, diphenylamine, and 1-benzyl-4-piperidone, were performed using the recombinant S. lividans cells. These ionized aromatics were converted to the corresponding 1,2-dihydrodiol, mono- or tri-hydroxy forms in 48 h. The structure of the converted products was determined by their EI-MS, (1)H- and (13)C NMR analysis, and several products were found to be novel compounds. (C) 2003 Elsevier Science Ltd. All rights reserved.