Spore-display platform for enzymatic conversion of FAME to alpha olefins
Innovative spore-display technology enhances enzyme stability and efficiency for converting FAME to alpha olefins, addressing enzyme reuse and kinetic challenges. Scalable from benchtop to 5-liter continuous reactor systems, this solution offers cost-effective alpha olefin production.
Overview
Caravel Bio presents a groundbreaking solution utilizing spore-display technology to facilitate the enzymatic conversion of fatty acid methyl esters (FAME) into valuable linear alpha olefins. This one-pot, continuous flow-through reactor system leverages a two-step enzymatic reaction: first, converting FAME into saturated free fatty acids using lipases, followed by enzymatic decarboxylation using peroxidase with hydrogen peroxide. The innovative spore-display platform enhances enzyme stability, lifetime, and kinetics, overcoming common challenges such as hydrophobic substrate solubility and enzyme inactivation by high H2O2 concentrations.
Technical specifications
- Spore-display technology: Immobilizes and evolves enzymes, enhancing stability and efficiency.
- Two-step enzymatic process: Utilizes lipases for FAME hydrolysis and P450 decarboxylases for decarboxylation.
- Scalability: Proven from 200 µL to 5-liter bioreactor volumes, supporting industrial-scale production.
- Enzyme library: Includes 80 spore-displayed lipases and a P450 decarboxylase library with up to 30% amino acid variation.
- Machine-learning guided evolution: Optimizes enzyme homologs for improved performance in desired conditions.
Technology readiness level
Currently at Technology Readiness Level 3, this solution has demonstrated feasibility in a lab environment with recent advancements in enzyme stability and scaling in a 5-liter bioreactor. Future work involves further validation and optimization to transition towards commercial readiness.
About Caravel Bio
Caravel Bio is a biotechnology company that has developed a synthetic biology platform designed to streamline the protein discovery and delivery process. By combining cell-free protein synthesis with bacterial spore display technology, the company accelerates directed evolution, a key process in biomolecular engineering. This approach allows for the rapid creation, testing, and optimization of millions of protein variants in parallel. By integrating these lab-based methods with machine learning, Caravel engineers robust, stable enzymes that can function as biocatalysts in demanding industrial environments where traditional enzymes might fail and living cell-based systems may not be feasible.
The company focuses on providing scalable protein solutions for critical industrial sectors, including carbon capture, non-pollutive chemical manufacturing, DNA synthesis, and animal health. For example, Caravel has applied its technology to develop efficient biocatalysts for potassium bicarbonate-based carbon capture, offering a cost-effective and energy-efficient alternative to conventional amine solvents. Supported by funding from the National Science Foundation and various venture partners, Caravel aims to transform the utility of biology in industrial settings by reducing the time, cost, and complexity of engineering enzymes for real-world applications.
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