Codon-Optimized Xylanase Gene for Thermostable Enzyme Production
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Solution Overview
Problem
Current xylanase enzymes face challenges in industrial applications due to issues such as sticky doughs in baking, haze formation in brewing, and reduced digestibility of animal feed, primarily caused by the presence of arabinoxylans, which affect processing efficiency and product quality.
Innovation Solution
A novel polynucleotide sequence encoding a thermostable and thermotolerant xylanase enzyme is developed, featuring silent mutations that enhance protein expression levels, allowing for improved stability and activity across a wide temperature and pH range, thereby addressing the limitations of existing xylanase enzymes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional xylanase enzymes are used, then basic xylan degradation function is provided, but protein expression levels are insufficient and stability across temperature and pH ranges is limited
Solution Approach 1:
The patent applies parameter changes by modifying nucleotide sequences (codon optimization) to alter gene expression parameters without changing the amino acid sequence. This increases protein expression levels while maintaining enzyme stability through silent mutations that improve translational efficiency and mRNA stability.
Solution Approach 2:
The patent creates multiple copies of the xylanase gene with optimized nucleotide sequences. By synthesizing redundant gene copies with improved codon usage, the invention achieves higher expression levels while the encoded protein maintains its original stable structure and function.
2Productivity
If xylanase activity is increased to degrade arabinoxylans, then processing efficiency improves, but the enzyme must maintain stability across wider temperature and pH ranges
Solution Approach 1:
The patent uses parameter changes by optimizing nucleotide sequences to enhance protein expression and stability. The optimized genes produce enzymes that maintain structural integrity at higher temperatures and varied pH levels, enabling effective xylan degradation across broader industrial processing conditions.
3Productivity
If silent mutations are introduced to enhance protein expression, then codon optimization improves translation efficiency, but the nucleotide sequence complexity increases
Solution Approach 1:
The patent creates simplified copies of the original gene with optimized codon usage. By synthesizing new nucleotide sequences that use preferred codons for the host organism, the invention achieves higher expression efficiency while the resulting protein sequence remains identical to the original, maintaining functional simplicity.
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 xylanase enzyme demonstrates increased expression levels and stability, effectively degrading arabinoxylans, improving processing efficiency in industries like baking, brewing, and animal feed production, leading to better product quality and reduced viscosity issues.
Implementation Method 1
Xylanases (e.g., endo-1,4-beta-xylanase, EC 32.1.8) hydrolyze internal β-1,4-xylosidic linkages in xylan to produce smaller molecular weight xylose and xylo-oligomers
Implementation Method 2
A novel polynucleotide sequence encoding a thermostable and thermotolerant xylanase enzyme is developed, featuring silent mutations that enhance protein expression levels
Data Source
AI summary
The present disclosure provides for a polynucleotide sequences encoding a xylanase. More specifically, the present disclosure provides for polynucleotide sequences with codon mutations encoding a xylanase.