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Malonyl-CoA pathway: a promising route for 3-hydroxypropionate biosynthesis
Changshui Liu1,2, Yamei Ding2, Mo Xian1
1a CAS Key Lab of Biobased Materials , Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao , China.
Sustainable production of 3-Hydroxypropionate (3HP) is achievable via fermentation. The malonyl-CoA pathway enables high yields of this versatile platform chemical, paving the way for biodegradable plastics and other valuable compounds.
Area of Science:
- Biotechnology
- Metabolic Engineering
- Green Chemistry
Background:
- 3-Hydroxypropionate (3HP) is a key platform chemical for producing commodity chemicals and biodegradable plastics.
- Sustainable production methods are crucial for meeting industrial demand and environmental goals.
Purpose of the Study:
- To investigate and optimize the fermentative production of 3HP using the malonyl-CoA pathway.
- To assess the potential of 3HP as a sustainable precursor for valuable chemicals and materials.
Main Methods:
- Construction and optimization of the malonyl-CoA pathway in microbial hosts like Escherichia coli, yeast, and cyanobacteria.
- Strategies included carbon flux redirection, enzyme engineering, and enhancing cofactor supply.
Main Results:
- Successfully engineered microbial strains for 3HP production.
- Achieved significantly enhanced 3HP titers, reaching up to 40 g/L.
- Demonstrated the broad feedstock compatibility and favorable thermodynamics of the malonyl-CoA pathway.
Conclusions:
- The malonyl-CoA pathway is a viable and advantageous route for fermentative 3HP production.
- High titers achieved indicate the feasibility of commercial-scale manufacturing of 3HP and its derivatives.
- This research supports the development of sustainable chemical and material production processes.
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