Engineered Microbial Pathways for Renewable 1,4-Butanediol Production
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Solution Overview
Problem
Current methods for producing 1,4-butanediol and its chemical precursors rely on petroleum-based feedstocks and energy-intensive processes, necessitating the development of alternative, renewable, and less capital-intensive production methods.
Innovation Solution
Engineering non-naturally occurring microbial organisms with genetic modifications to produce 4-hydroxybutyrate and 1,4-butanediol through the expression of specific polypeptides and nucleic acid molecules, utilizing biochemical pathways and vectors to enhance production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If petroleum-based feedstocks and traditional chemical processes are used to produce 1,4-butanediol, then production capability is achieved, but energy consumption and capital intensity increase
Solution Approach 1:
The patent replaces traditional petroleum-based chemical processes with a biological system (microbial fermentation). The microbial organism uses enzymatic catalysis to convert renewable feedstocks into 1,4-butanediol, substituting the mechanical/chemical industrial process with a biological one that operates under milder conditions and consumes less energy.
Solution Approach 2:
The patent changes the fundamental parameters of the production process by using renewable feedstocks instead of petroleum-based materials, operating at lower temperatures and pressures, and using biological catalysts instead of chemical catalysts. These parameter changes result in reduced energy consumption and capital intensity while maintaining production capability.
2Productivity
If petroleum-based feedstocks are used for 1,4-butanediol production, then industrial output is achieved, but sustainability decreases
Solution Approach 1:
The patent changes the feedstock parameter from non-renewable petroleum-based materials to renewable resources such as sugars, starches, or other carbon sources that can be sustainably produced. This parameter change enables the process to be environmentally sustainable while maintaining industrial output levels through controlled microbial fermentation.
Solution Approach 2:
The microbial organism serves itself by utilizing renewable feedstocks and converting them into the desired product through its metabolic pathways. The system is self-sustaining and can continue producing 1,4-butanediol as long as renewable feedstocks are available, eliminating the need for depleting petroleum resources.
3Productivity
If traditional chemical processes are used to produce 4-hydroxybutyrate and 1,4-butanediol, then product synthesis is achieved, but process complexity and capital intensity increase
Solution Approach 1:
The patent replaces complex multi-step chemical processes with a single integrated biological process. The microbial organism performs multiple chemical transformations through its metabolic pathways in a single fermentation vessel, simplifying the overall process architecture and reducing the need for separate reaction chambers, purification units, and processing equipment.
Solution Approach 2:
The microbial organism serves as a universal biocatalyst that can perform multiple functions: converting various renewable feedstocks into 4-hydroxybutyrate, producing 1,4-butanediol, and handling different carbon sources. This multi-functionality eliminates the need for separate specialized equipment for each transformation step, reducing process complexity and capital requirements.
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
Achieves the production of 1,4-butanediol and related compounds using renewable resources with reduced energy and capital inputs, providing a sustainable alternative to petroleum-based processes.
Implementation Method 1
The invention provides non-naturally occurring microbial organisms having a 4-hydroxybutyrate, 1,4-butanediol, or other product pathway and being capable of producing 4-hydroxybutyrate, 1,4-butanediol, or other product
Implementation Method 2
The present invention also provides polypeptides and encoding isolated nucleic acid molecules. The polypeptides and nucleic acid molecules can be used in the production of 4-HB, GBL, 4-HBal, 4-HBCoA, BDO and/or putrescine
Data Source
AI summary
The invention provides non-naturally occurring microbial organisms having a 4-hydroxybutyrate, gamma-butyrolactone, 1,4-butanediol, 4-hydroxybutanal, 4-hydroxybutyryl-CoA and/or putrescine pathway and being capable of producing 4-hydroxybutyrate, wherein the microbial organism comprises one or more genetic modifications. The invention additionally provides methods of producing 4-hydroxybutyrate, gamma-butyrolactone, 1,4-butanediol, 4-hydroxybutanal, 4-hydroxybutyryl-CoA and/or putrescine or related products using the microbial organisms.