Coupled incremental precursor and co-factor supply improves 3-hydroxypropionic acid production in Saccharomyces cerevisiae
Artikel i vetenskaplig tidskrift, 2014

3-Hydroxypropionic acid (3-HP) is an attractive platform chemical, which can be used to produce a variety of commodity chemicals, such as acrylic acid and acrylamide. For enabling a sustainable alternative to petrochemicals as the feedstock for these commercially important chemicals, fermentative production of 3-HP is widely investigated and is centered on bacterial systems in most cases. However, bacteria present certain drawbacks for large-scale organic acid production. In this study, we have evaluated the production of 3-HP in the budding yeast Saccharomyces cerevisiae through a route from malonyl-CoA, because this allows performing the fermentation at low pH thus making the overall process cheaper. We have further engineered the host strain by increasing availability of the precursor malonyl-CoA and by coupling the production with increased NADPH supply we were able to substantially improve 3-HP production by five-fold, up to a final titer of 463 mg l(-1). Our work thus led to a demonstration of 3-HP production in yeast via the malonyl-CoA pathway, and this opens for the use of yeast as a cell factory for production of bio-based 3-HP and derived acrylates in the future. (C) 2014 International Metabolic Engineering Society.

Författare

Yun Chen

Chalmers, Kemi- och bioteknik, Livsvetenskaper, Systembiologi

Jichen Bao

Chalmers, Kemi- och bioteknik, Livsvetenskaper, Systembiologi

Il-Kwon Kim

Chalmers, Kemi- och bioteknik, Livsvetenskaper, Systembiologi

Verena Siewers

Chalmers, Kemi- och bioteknik, Livsvetenskaper, Systembiologi

Jens B Nielsen

Chalmers, Kemi- och bioteknik, Livsvetenskaper, Systembiologi

Metabolic Engineering

1096-7176 (ISSN) 1096-7184 (eISSN)

Vol. 22 104-109

Industrial Systems Biology of Yeast and A. oryzae (INSYSBIO)

Europeiska kommissionen (FP7), 2010-01-01 -- 2014-12-31.

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Styrkeområden

Livsvetenskaper och teknik

Ämneskategorier

Kemi

DOI

10.1016/j.ymben.2014.01.005