Engineered Microbial Cells for Controlled Acyl Amino Acid Synthesis
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Solution Overview
Problem
Chemical manufacturing of acyl amino acids is hampered by the ease of obtaining and storing starting materials, the use of harsh reagents, synthesis difficulties, and the environmental cost of disposing chemical by-products.
Innovation Solution
Engineered microbial cells, such as Bacillus cells, are modified to control hydroxylation and methylation of fatty acid portions of acyl amino acids through genetic modifications, including inactivation or over-expression of fatty acid hydroxylase genes, to enhance the yield of desired surfactants and fatty acids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If chemical manufacturing methods are used to produce acyl amino acids, then the production process can be established, but harsh reagents and difficult synthesis conditions are required
Solution Approach 1:
The patent replaces chemical synthesis methods with biological synthesis using engineered microbial cells. The microbial cells utilize enzymatic pathways to produce acyl amino acids under mild conditions, eliminating the need for harsh chemical reagents and complex synthesis procedures while maintaining production capability
Solution Approach 2:
The patent modifies the biological parameters of microbial cells through genetic engineering to optimize acyl amino acid production. By altering gene expression, metabolic pathways, and cellular functions, the system achieves high yield production under gentle conditions, avoiding harsh reagents while maintaining manufacturing efficiency
2Productivity
If chemical manufacturing methods are used to produce acyl amino acids, then the production process can be established, but chemical by-products require disposal and environmental cost increases
Solution Approach 1:
The patent converts the harmful chemical by-products of traditional synthesis into beneficial biological processes. By using microbial cells with engineered metabolic pathways, the system produces acyl amino acids through controlled biological transformations, eliminating harmful chemical waste while maintaining high productivity through efficient cellular metabolism
Solution Approach 2:
The engineered microbial cells perform self-service by utilizing their own metabolic pathways to produce acyl amino acids. The cells autonomously convert substrates into desired products through enzymatic reactions, eliminating the need for external chemical reagents and by-product disposal systems while maintaining continuous production capability
3Adaptability or versatility
If fatty acid hydroxylase is active in acyl amino acid-producing cells, then hydroxylation of fatty acid portion occurs, but yield of desired surfactants decreases due to unwanted hydroxylated by-products
Solution Approach 1:
The patent extracts and removes the unwanted hydroxylation function by inactivating the fatty acid hydroxylase gene (cypB). This selective removal of the harmful enzymatic activity eliminates the formation of hydroxylated by-products while preserving the main acyl amino acid production pathway, thereby increasing yield
Solution Approach 2:
The patent applies inversion by inactivating the hydroxylase enzyme that causes unwanted side reactions. Instead of enhancing hydroxylation to improve product versatility, the system removes this activity to prevent by-product formation, thereby optimizing yield. The alternative approach would be to selectively activate only the desired hydroxylation pathway if needed
4Adaptability or versatility
If fatty acid hydroxylase is over-expressed in acyl amino acid-producing cells, then hydroxylated products are generated, but synthesis efficiency decreases due to by-product formation
Solution Approach 1:
The patent extracts the problematic hydroxylation function by removing or inactivating the fatty acid hydroxylase gene. This eliminates the source of unwanted hydroxylated by-products that reduce synthesis efficiency, while the system can still achieve product modification through alternative means such as substrate selection or other enzymatic pathways
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 cells increase the yield of acyl amino acids with controlled hydroxylation and methylation, reducing unwanted by-products and improving the efficiency of acyl amino acid production.
Implementation Method 1
acyl amino acids produced in microbial cells such as Bacillus cells, can be modified, for example, by hydroxylation and/or methylation
Implementation Method 2
acyl amino acids produced in microbial cells such as Bacillus cells, can be modified, for example, by hydroxylation and/or methylation
Data Source
AI summary
Engineered polypeptides or engineered microbial cells useful in synthesizing acyl amino acids are provided. In some embodiments, engineered polypeptides or engineered microbial cells are useful in synthesizing acyl amino acids with one or more hydroxyl and/or methyl groups at one or more positions of the fatty acid portion of the acyl amino acid (e.g., at ω-1, ω-2, and/or ω-3 positions of the fatty acid portion of the acyl amino acid). Also provided are methods of making acyl amino acids using engineered polypeptides and/or engineered microbial cells.