Biotechnological production of plant‐specific hydroxylated phenylpropanoids. Issue 9 (18th April 2014)

• Record Type: Journal Article
• Authors: Lin, Yuheng; Yan, Yajun
• Is Part Of: Biotechnology and bioengineering. Volume 111:Issue 9(2014:Sep.)
• Page Start: 1895
• Page End: 1899
• Publication Date: 2014-04-18
• Subjects: Biotechnology -- Periodicals; Bioengineering -- Periodicals; 660.6
• DOI: 10.1002/bit.25237
• Languages: English
• ISSNs: 0006-3592

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>ABSTRACT</title> <sec id="bit25237-sec-0001" sec-type="section"> <p>Hydroxylated phenylpropanoid compounds (e.g., esculetin, piceatannol, and eriodictyol) have been proved to possess important biological activities and pharmacological properties. These compounds exist at low abundance in nature, which hampers their cost‐effective isolation, and broad application. Meanwhile, regiospecific hydroxylation of complex aromatic compounds is still quite challenging for chemical synthesis. In past decades, biocatalytic hydroxylation of plant phenylpropanoids was achieved due to the identification and engineering of some cytochrome P450 hydroxylases; however, the conversion efficiency was still too low for scale‐up production use. In this work, we identify a non‐P450 monooxygenase (HpaBC) from <italic>Escherichia coli</italic>, which is able to catalyze the efficient <italic>ortho</italic>‐hydroxylation towards plant phenylpropanoids umbelliferone and resveratrol; meanwhile it also exhibits activity towards naringenin. On this basis, whole‐cell biocatalysis enables the production of esculetin and piceatannol at high titers (2.7 and 1.2 g/L, respectively, in shake flasks) and high yields (close to 100%). To our knowledge, this work reports the highest titers and yields for biotechnological production of esculetin and piceatannol, representing a promising hydroxylation platform. Biotechnol. Bioeng. 2014;111: 1895–1899. © 2014 Wiley Periodicals, Inc.</p> </sec> </abstract>