Cyclopropane Fuel Synthesis via Genetically Modified Host Cells
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Solution Overview
Problem
Current synthetic methods for cyclopropane compounds, used as high-energy fuels, are complex and involve hazardous chemicals, with no suitable alternative for carbon-based rocket fuels, and existing fuels like kerosene and RP1 have limitations in terms of energy density and stability.
Innovation Solution
A genetically modified host cell system capable of producing cyclopropane compounds using biosynthetic gene clusters and enzymes such as thioesterase, reductase, and O-methyltransferase, which synthesizes polyketides with cyclopropane groups, allowing for the production of high-energy fuels with improved properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If chemical synthesis methods are used to produce cyclopropane compounds, then high energy density fuels can be obtained, but the synthesis process becomes complex and involves hazardous chemicals
Solution Approach 1:
The patent replaces chemical synthesis methods with biological synthesis using genetically modified host cells. The biosynthetic pathway uses enzymatic reactions (thioesterase, reductase, O-methyltransferase) to produce cyclopropane compounds, substituting complex chemical processes with controlled biological systems that are inherently safer and more selective
Solution Approach 2:
The patent introduces polyketide intermediates as biosynthetic precursors. The genetically modified host cells produce polyketides that are then converted to cyclopropane compounds through enzymatic reactions, providing a controlled intermediate stage that simplifies the overall synthesis pathway while maintaining high energy density
2Reliability
If conventional fuels like kerosene and RP1 are used, then current aviation and rocket applications can be maintained, but energy density and stability are limited
Solution Approach 1:
The patent changes the molecular structure parameters by introducing cyclopropane groups into the fuel molecules. The strained three-membered rings create high potential energy states that translate to superior combustion energy and stability, fundamentally altering the fuel's energy characteristics while maintaining compatibility with existing fuel systems
3Productivity
If biosynthetic gene clusters are used to produce cyclopropane compounds, then sustainable production with improved properties is achieved, but the system complexity increases
Solution Approach 1:
The patent uses a multi-functional biosynthetic system where a single genetically modified host cell performs multiple functions: producing polyketide intermediates, converting them to cyclopropane compounds, and enabling sustainable production. This integrated approach consolidates complex biosynthetic pathways into a unified system that is both productive and manageable
Solution Approach 2:
The patent segments the biosynthetic pathway into distinct functional modules encoded by separate biosynthetic gene clusters. Each cluster contains specific genes for enzymes like thioesterase, reductase, and O-methyltransferase, allowing independent optimization and control of each biosynthetic step while maintaining overall system functionality
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
The system enables the sustainable production of high-energy fuels with enhanced combustion energy and stability, suitable for aviation, rocketry, and other applications, while also providing a potential route for drug development.
Implementation Method 1
one or more genes encoding a thioesterase and/or a reductase, and optionally one or more genes encoding an O-methyltransferase, ethyl transferases, a decarboxylase, and/or a decarbonylase
Implementation Method 2
The present invention provides for a method of producing a cyclopropane compound comprising: (a) providing a genetically modified host cell of the present invention, (b) culturing or growing the genetically modified host cell in a suitable culture or medium such that the cyclopropane compound, or a mixture thereof, is produced
Implementation Method 3
Combustion energy increases with total C. However, the C number decreases the ring strain angle. Cyclopropane has the highest per C combustion energy.
Data Source
AI summary
The present invention provides for a cyclopropane compound having the following chemical formula:wherein α is —H or —COOR, wherein R is —H or an alkyl group, such as —CH3, —CH2CH3, —(CH2)2—CH3, —(CH2)3—CH3, or —C(CH3)3; β is each independentlywherein at least one β isand, n is an integer from 3 to 11. A fuel composition comprising the cyclopropane compound thereof and a fuel additive. The present invention also provides for a system or genetically modified host cell capable of producing the cyclopropane compound, and a method for producing the cyclopropane compound.