Methyl Butenol Synthase Enzymatic Pathway for Biofuel Production
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Solution Overview
Problem
Current methods for producing alternative fuels face challenges in efficiently converting biomass into fuels with high energy density and low environmental impact, particularly in addressing the limitations of ethanol and methanol production.
Innovation Solution
The development of genes encoding methyl butenol synthase and their use in producing methyl butenol (MBO) through fermentation by transformed host cells, such as bacteria and yeast, which can convert carbohydrates into MBO as a biofuel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If ethanol and methanol are produced as alternative fuels, then production feasibility is improved, but energy density remains low
Solution Approach 1:
The patent changes the chemical structure parameter of the produced alcohol from C1-C2 (methanol/ethanol) to C5 (isopentanol) by introducing specific enzymatic pathways. This parameter change in carbon chain length directly increases energy density while maintaining fermentative production feasibility.
Solution Approach 2:
The patent uses engineered enzymes (such as threonine deaminase and isopentyl pyrophosphate synthase) as intermediaries to convert carbohydrates into isopentanol through a novel metabolic pathway. These enzymatic intermediaries enable the transformation from simple sugars to higher-alcohol fuels with improved energy characteristics.
2Use of energy by moving object
If biobutanol production is pursued for high energy density, then energy density is improved, but production complexity increases
Solution Approach 1:
The patent extracts and utilizes specific enzymatic functions from natural metabolism (threonine degradation pathway) and reconfigures them for fuel production. By taking out the essential catalytic steps and simplifying the pathway to four main enzymatic steps, the patent reduces production complexity compared to traditional biobutanol methods.
Solution Approach 2:
The patent changes the target product parameter from butanol (C4) to isopentanol (C5), which has superior energy density and combustion properties. This parameter change in molecular structure achieves higher energy density while using a simpler, more direct enzymatic pathway.
3Use of energy by moving object
If fossil fuels are used for energy production, then energy density is maintained, but environmental harm increases
Solution Approach 1:
The patent converts agricultural waste and carbohydrates (which would otherwise be low-value materials) into high-energy-density isopentanol fuel. This transforms potentially harmful waste products into beneficial renewable energy sources, reducing environmental impact while maintaining energy density comparable to or exceeding fossil fuels.
Solution Approach 2:
The patent enables microorganisms to perform self-service by engineering their metabolic pathways to directly produce isopentanol from carbohydrates through endogenous enzymatic pathways. The organisms serve themselves as both production vessels and catalytic factories, eliminating the need for complex external processing infrastructure.
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
Methyl butenol offers a high-energy-density biofuel alternative to traditional alcohols, with improved octane rating and reduced toxicity, providing a more environmentally and economically viable option compared to fossil fuels.
Implementation Method 1
Biosynthesis of MBO occurs in the chloroplast through the action of the enzyme MBO synthase, which uses DMADP derived from the MEP pathway as a substrate.
Implementation Method 2
the transformed host cells express the exogenous MBO synthase (mRNA or protein). In one embodiment, the host cells express MBO synthase and yield MBO. In one embodiment the transformed host cell is used in fermentation with a carbohydrate to yield MBO
Data Source
AI summary
The present invention provides novels genes encoding methyl butenol (MBO) synthase, methyl butenol synthases and their use in methyl butenol production.