YbjL Gene Expression for Fermentation Yield
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing L-glutamic acid and succinic acid through fermentation are inefficient, requiring high amounts of organic nitrogen sources, leading to increased costs and complexity, and there is a need for improved production rates and simplified processes.
Innovation Solution
Enhancing the expression of the ybjL gene in specific bacterial strains, such as those belonging to the Enterobacteriaceae family, to improve the production efficiency of L-glutamic acid and succinic acid by increasing the gene copy number, modifying expression control sequences, or combining these methods, which results in improved fermentation yields and production rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional fermentation methods are used to produce L-glutamic acid and succinic acid, then production can be achieved, but high amounts of organic nitrogen sources are required leading to increased costs and process complexity
Solution Approach 1:
The invention changes the genetic parameters of the microorganism by enhancing the expression of specific genes (gltA, ppc, gdhA, and/or ybjL) to alter the metabolic parameters of the fermentation process. This genetic modification enables the microorganism to achieve higher production rates of L-glutamic acid and/or succinic acid while reducing the quantity of organic nitrogen sources required in the culture medium.
2Productivity
If conventional fermentation methods are used to produce L-glutamic acid and succinic acid, then production can be achieved, but production costs increase due to high nitrogen source requirements
Solution Approach 1:
The invention changes the genetic parameters of the microorganism by enhancing the expression of specific genes (gltA, ppc, gdhA, and/or ybjL) to alter the metabolic parameters of the fermentation process. This genetic modification enables the microorganism to achieve higher production rates of L-glutamic acid and/or succinic acid while reducing the quantity of organic nitrogen sources required in the culture medium, thereby lowering production costs.
3Productivity
If conventional fermentation methods are used to produce L-glutamic acid and succinic acid, then production can be achieved, but the fermentation process becomes more complex
Solution Approach 1:
The invention changes the genetic parameters of the microorganism by enhancing the expression of specific genes (gltA, ppc, gdhA, and/or ybjL) to alter the metabolic parameters of the fermentation process. This genetic modification enables the microorganism to achieve higher production rates of L-glutamic acid and/or succinic acid while reducing the quantity of organic nitrogen sources required in the culture medium, thereby simplifying the fermentation process.
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 enhanced expression of the ybjL gene leads to increased yields and improved production rates of L-glutamic acid and succinic acid, reducing production costs and simplifying the fermentation process.
Implementation Method 1
Methods for producing L-glutamic acid by fermentation using other bacterial strains
Implementation Method 2
Enhancing the expression of the ybjL gene in specific bacterial strains, such as those belonging to the Enterobacteriaceae family, to improve the production efficiency of L-glutamic acid and succinic acid
Data Source
AI summary
An acidic substance having a carboxyl group is produced by culturing in a medium a microorganism which has been modified to enhance expression of the ybjL gene, and collecting the acidic substance having a carboxyl group from the medium.