Acetyl-CoA Pathway Engineering for Higher Methanol Product Yields

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Solution Overview

Problem

Existing chemical production processes rely heavily on petroleum-based feedstocks, necessitating the development of renewable feedstock-based routes for the production of valuable compounds like 1,3-butanediol, 1,4-butanediol, butadiene, crotyl alcohol, 3-buten-2-ol, adipic acid, hexamethylenediamine, caprolactam, and methacrylic acid.

Innovation Solution

Engineering non-naturally occurring microbial organisms with enhanced carbon flux through acetyl-CoA pathways, including methanol metabolic, formaldehyde fixation, and formate assimilation pathways, to produce bioderived compounds such as alcohols, glycols, organic acids, and other chemicals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If petroleum-based feedstocks are used for chemical production, then existing production processes can be maintained, but reliance on non-renewable resources increases and sustainability is compromised

Engineering Contradiction:

Improveproduction of bioderived compoundsVSAvoidreliance on petroleum-based feedstocks

Core Design Contradiction:

ProductivityVSLoss of substance

Solution Approach 1:

The patent changes the fundamental parameter of feedstock type from petroleum-based to renewable biomass-based materials. This involves modifying the carbon source parameter in the production process to use sustainable alternatives like agricultural residues, forestry waste, and dedicated energy crops, thereby resolving the contradiction between maintaining productivity and reducing petroleum dependency

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent substitutes traditional petrochemical conversion mechanisms with biological conversion systems. Instead of relying on petroleum refining and chemical synthesis, the invention employs enzymatic hydrolysis, fermentation, and biocatalysis to convert renewable biomass into target chemicals, achieving sustainable production while maintaining or improving productivity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If traditional chemical routes are used for producing compounds like 1,3-butanediol and butadiene, then established processes can be maintained, but environmental sustainability and renewable resource utilization are compromised

Engineering Contradiction:

Improveproduction process stabilityVSAvoidenvironmental impact of petroleum-based production

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces petrochemical conversion mechanisms with biological conversion systems. Traditional high-temperature cracking and chemical synthesis are substituted with enzymatic hydrolysis, fermentation, and biocatalysis, maintaining process reliability through controlled biological reactions while eliminating harmful environmental factors associated with petroleum processing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent converts potentially harmful waste biomass materials into valuable chemical products. By utilizing agricultural residues, forestry waste, and other lignocellulosic biomass that would otherwise be discarded or burned, the invention transforms these materials into useful chemicals like 1,3-butanediol and butadiene, thereby reducing environmental impact while maintaining production stability

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enhances the yield and production of bioderived compounds by intensifying carbon flux, reducing the reliance on petroleum-based feedstocks and providing sustainable chemical production processes.

Implementation Method 1

methanol metabolic pathways, a formaldehyde fixation pathway, and a formate assimilation pathway in combination with a bioderived compound pathway

Methodology Applied

Scientific EffectMethanol metabolism: Fermentation

Implementation Method 2

non-naturally occurring microbial organisms having an acetyl-CoA pathway... capable of enhancing carbon flux through acetyl-CoA

Methodology Applied

Scientific EffectAcetyl-CoA synthesis: Fermentation

Implementation Method 3

a formaldehyde fixation pathway... capable of producing a bioderived compound

Methodology Applied

Scientific EffectFormaldehyde fixation: Fermentation

Implementation Method 4

a formate assimilation pathway in combination with a bioderived compound pathway

Methodology Applied

Scientific EffectFormate assimilation: Fermentation

Data Source

PatentUS12529078B2Microorganisms and methods for improving product yields on methanol using acetyl-CoA synthesis

Publication Date: 2026.01.20 GENOMATICA INC

AI summary

The invention provides non-naturally occurring microbial organisms containing enzymatic pathways and/or metabolic modifications for enhancing carbon flux through acetyl-CoA. In some embodiments, the microbial organisms of the invention having such pathways also include pathways for generating reducing equivalents, formaldehyde fixation and/or formate assimilation. The enhanced carbon flux through acetyl-CoA, in combination with pathways for generating reducing equivalents, formaldehyde fixation and/or formate assimilation can, in some embodiments, be used for production of a bioderived compound. Accordingly, in some embodiments, the microbial organisms of the invention can include a pathway capable of producing a bioderived compound of the invention. The invention still further provides a bioderived compound produced by a microbial organism of the invention, culture medium having the bioderived compound of the invention, compositions having the bioderived compound of the invention, a biobased product comprising the bioderived compound of the invention, and a process for producing a bioderived compound of the invention.