Modified Microbial Promoter for Higher Amino Acid Expression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing target materials like amino acids in microorganisms, such as Corynebacterium, are limited in efficiency and require development of a universal promoter to enhance production yield.
Innovation Solution
A polynucleotide with specific nucleotide substitutions at positions 218, 219, 220, 221, 222, 225, and 227 is introduced to enhance promoter activity, increasing the expression of target genes and enhancing the production of materials like lysine, threonine, isoleucine, tryptophan, tyrosine, and phenylalanine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing promoter methods are used in microorganisms, then production of target materials can be achieved, but production efficiency and yield are limited
Solution Approach 1:
The patent applies parameter changes by modifying the promoter sequence at specific positions (218, 219, 220, 221, 222, 225, and 227) to alter its activity. This nucleotide substitution changes the promoter's parameters to enhance its ability to drive gene expression, thereby increasing both production efficiency and yield of target materials in microorganisms.
Solution Approach 2:
The patent implements local quality by making specific localized modifications to the promoter sequence at defined positions rather than changing the entire promoter. This targeted approach at specific nucleotide positions optimizes the promoter's function locally, resulting in enhanced gene expression and improved production outcomes.
2Productivity
If promoter activity is enhanced through nucleotide substitution, then gene expression increases, but complexity of genetic modification increases
Solution Approach 1:
The patent uses parameter changes by substituting nucleotides at specific positions in the promoter sequence. This approach changes the promoter's parameters in a controlled manner to achieve desired gene expression levels while maintaining a relatively simple modification strategy compared to more complex genetic engineering approaches.
Solution Approach 2:
The patent achieves universality by developing a promoter modification strategy that can be applied to enhance expression of various target genes in microorganisms. The modified promoter serves multiple functions and can be used across different genetic contexts, reducing the need for gene-specific optimization and simplifying overall genetic modification processes.
Data Source
AI summary
The present application relates to a novel promoter and a method for producing target materials using the same. More specifically, the present application relates to a novel polynucleotide having promoter activity, a gene expression cassette, and a host cell comprising the same, and a method for producing target materials using the microorganism.