Title Engineering Cupriavidus necator H16 for the autotrophic production of (R)-1,3-butanediol /
Authors Gascoyne, Joshua Luke ; Bommareddy, Rajesh Reddy ; Heeb, Stephan ; Malys, Naglis
DOI 10.1016/j.ymben.2021.06.010
Full Text Download
Is Part of Metabolic engineering.. San Diego, CA : Elsevier. 2021, vol. 67, p. 262-276.. ISSN 1096-7176. eISSN 1096-7184
Keywords [eng] 1,3-butanediol ; 4-hydroxy-2-butanone ; metabolic engineering ; carbon dioxide ; autotrophic fermentation ; Cupriavidus necator H16
Abstract [eng] Butanediols are widely used in the synthesis of polymers, specialty chemicals and important chemical intermediates. Optically pure R-form of 1,3-butanediol (1,3-BDO) is required for the synthesis of several industrial compounds and as a key intermediate of β-lactam antibiotic production. The (R)-1,3-BDO can only be produced by application of a biocatalytic process. Cupriavidus necator H16 is an established production host for biosynthesis of biodegradable polymer poly-3-hydroxybutryate (PHB) via acetyl-CoA intermediate. Therefore, the utilisation of acetyl-CoA or its upstream precursors offers a promising strategy for engineering biosynthesis of value-added products such as (R)-1,3-BDO in this bacterium. Notably, C. necator H16 is known for its natural capacity to fix carbon dioxide (CO2) using hydrogen as an electron donor. Here, we report engineering of this facultative lithoautotrophic bacterium for heterotrophic and autotrophic production of (R)-1,3-BDO. Implementation of (R)-3-hydroxybutyraldehyde-CoA- and pyruvate-dependent biosynthetic pathways in combination with abolishing PHB biosynthesis and reducing flux through the tricarboxylic acid cycle enabled to engineer strain, which produced 2.97 g/L of (R)-1,3-BDO and achieved production rate of nearly 0.4 Cmol Cmol−1 h−1 autotrophically. This is first report of (R)-1,3-BDO production from CO2.
Published San Diego, CA : Elsevier
Type Journal article
Language English
Publication date 2021
CC license CC license description