Production of the cyanogenic glycoside dhurrin in yeast.
Metab Eng Commun 2019;
9:e00092. [PMID:
31110942 PMCID:
PMC6512747 DOI:
10.1016/j.mec.2019.e00092]
[Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 04/27/2019] [Accepted: 04/27/2019] [Indexed: 12/26/2022] Open
Abstract
Cyanogenic glycosides are defense compounds found in a wide range of plant species, including many crops. We demonstrate that the cyanogenic glucoside dhurrin, naturally found in sorghum, can be produced at high titers in Saccharomyces cerevisiae, constituting the first report of cyanogenic glycoside production in a microbe. Genetic modifications to increase the supply of the dhurrin precursor tyrosine enabled dhurrin production in excess of 80 mg/L. The dhurrin-producing yeast strain was used as a chassis to investigate previously uncharacterized enzymes identified close to the biosynthetic gene cluster containing the dhurrin pathway enzymes. This work shows the potential of heterologous expression in yeast to facilitate investigations of plant cyanogenic glycoside pathways.
First production of cyanogenic glycosides in a microbe.
Strategies for optimizing production of cyanogenic glycosides.
Platform for rapidly characterizing the enzymes which constitute cyanogenic glycoside biosynthetic pathways.
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