Publish date: December 23, 2025
Applications
- Production of medium-chain alcohols, alkane/alkene biofuels, carboxylic acids, and amines
Advantages/Benefits
- First bio-based production of some molecules
- 1,3-butanediol titer is already 7 g/L and rate is 0.05 g/L/h, with little optimization
Background
Medium-chain alcohols have a wide range of applications in various industries, including biofuels, biochemicals, and pharmaceuticals. However, their production is a challenging task in the field of metabolic engineering. Current biological production methods often rely on complex and inefficient pathways, resulting in low yields and productivity. Additionally, the production of these chemicals often requires multiple steps, which can lead to increased costs and reduced efficiency. As a result, there is a need for a more efficient and cost-effective method for producing medium-chain alcohols.
Technology Overview
Scientists at Berkeley Lab have developed engineered polyketide synthases (PKSs) incorporating terminal reductase (TR) domains to biosynthesize medium-chain alcohols, such as 1,3-butanediol, 1,3-pentanediol, and 1,3-hexanediol, and aldehyde-derived compounds. This system utilized engineered rimocidin PKS integrated into a Streptomyces albus J1074 host cell, allowing product profile modulation by manipulating coenzyme A substrate pools and enabling amino alcohol production.
This novel terminal reductase-based PKS biosynthetic platform lays the foundation for expanding PKS design and biosynthesizing previously inaccessible alcohols and other aldehyde-derived molecules.
Development Stage
TRL 4 – validation in laboratory environment
Investigator(s)
Qingyun Dan
Namil Lee
Yan Chiu
Jay Keasling
Status
Patent pending
Opportunities
Available for licensing or collaborative research
