Engineered Yeast Metabolism for Higher Fatty Acid Fermentation Yield
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Solution Overview
Problem
Current methods for producing fatty acids and fatty acid-derived products from plant or animal sources are unsustainable and inefficient, and microbial fermentation technologies need enhancement for industrial-scale production.
Innovation Solution
Genetically engineered yeast cells with specific modifications, including overexpression of acetyl-CoA carboxylase and pyruvate carboxylase, to enhance fatty acid production and metabolic pathways for improved yield and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If plant or animal sources are used for fatty acid production, then production capacity is sufficient, but sustainability is poor and environmental impact is high
Solution Approach 1:
The patent replaces traditional mechanical/extraction-based fatty acid production from plant or animal sources with a biological production system using genetically engineered yeast cells. The yeast cells metabolically convert glucose into fatty acids through engineered pathways, substituting the need for agricultural cultivation and animal farming, thereby eliminating the associated environmental harm while maintaining high production capacity.
2Object-affected harmful factors
If conventional microbial fermentation is used for fatty acid production, then environmental friendliness is improved, but production titer and yield are insufficient for industrial application
Solution Approach 1:
The patent applies parameter changes by genetically modifying the yeast cell's metabolic parameters through overexpression of key enzymes (acetyl-CoA carboxylase, pyruvate carboxylase, citrate synthase) and disruption of competing pathways. This reconfigures the metabolic flux to favor fatty acid synthesis, transforming the production titer from insufficient levels to industrially viable concentrations while preserving the environmentally friendly fermentation process.
Solution Approach 2:
The patent implements local quality by specifically targeting and modifying particular metabolic pathways within the yeast cell rather than attempting to change the entire organism. Through precise genetic engineering of specific enzymes and pathways involved in fatty acid biosynthesis, the patent enhances fatty acid production locally within the metabolic network while maintaining overall cellular function and environmental compatibility.
3Ease of operation
If existing yeast strains are used for fatty acid production, then ease of operation is maintained, but production efficiency is insufficient for industrial scale
Solution Approach 1:
The patent creates a universal yeast platform strain that can produce not only fatty acids but also various fatty acid-derived products. The genetically engineered yeast cell serves multiple functions: it maintains ease of operation through standard fermentation processes while simultaneously achieving high production efficiency for fatty acids and can be adapted for producing different fatty acid derivatives, making it a versatile industrial platform.
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 engineered yeast cells achieve significant increases in fatty acid production, enabling scalable and sustainable industrial applications.
Implementation Method 1
The fungal cell is genetically modified for overexpression of an acetyl-CoA carboxylase
Implementation Method 2
The fungal cell is genetically modified for overexpression of a pyruvate carboxylase
Implementation Method 3
Research efforts have focused on production of fatty acids via microbial fermentation
Data Source
AI summary
A yeast cell for the production of fatty acids and/or fatty acid-derived products is genetically modified for overexpression of one or more endogenous yeast genes selected from the group consisting of ADP-ribosylation factor-binding protein, phosphatidylinositol 4,5-bisphosphate 5-phosphatase INP54, NADP-dependent isocitrate dehydrogenase IDP3, mitochondrial phosphatidylglycerophosphatase GEP4, triglyceride lipase TGL1, long chain fatty acyl-CoA synthetase FAA3, lipid phosphate phosphatase LPP1, and variants of such endogenous yeast genes. The yeast cell produces higher amount of fatty acids and/or fatty acid-derived products compared to a yeast cell not overexpressing the one or more endogenous yeast genes.