β-Hexosaminidase Yeast Expression for Reproducible Enzyme Production
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing β-hexosaminidase enzyme from Jack Beans are plagued by irreproducibility, contamination risks, high cost, and lack of structural characterization, with limited availability and microbial expression systems failing to reproduce the enzyme's native structure effectively.
Innovation Solution
The enzyme is expressed in microbial systems like Komagataella phaffii and Klyveromyces lactis, achieving high activity levels and minimal contaminant presence, with the enzyme found to exist as two associated polypeptide chains rather than a single chain, ensuring correct structural association.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If β-hexosaminidase is extracted from Jack Beans using traditional methods, then the enzyme can be obtained, but the process suffers from high contamination risk, irreproducibility, and high costs due to low enzyme abundance
Solution Approach 1:
The patent uses a bacterial expression system (Escherichia coli) as an intermediary to produce the β-hexosaminidase enzyme. The gene encoding the enzyme is cloned into a bacterial host, which then serves as a controlled intermediary to produce large quantities of pure enzyme without the contamination risks associated with plant extraction. This resolves the contradiction by mediating between the need for enzyme production and the avoidance of contamination.
Solution Approach 2:
The patent creates a copy of the β-hexosaminidase gene and introduces it into a bacterial host system. Instead of extracting the enzyme from its natural source (Jack Beans), the invention copies the genetic information and uses a controlled bacterial system to produce the enzyme. This copying approach eliminates the irreproducibility and contamination issues inherent in plant-based extraction while maintaining enzyme functionality.
2Productivity
If traditional extraction from Jack Beans is used, then enzyme production is possible, but the low abundance of the enzyme requires large amounts of plant material, making the process costly and complex
Solution Approach 1:
The patent employs preliminary action by first cloning the β-hexosaminidase gene into an expression vector and transforming it into bacterial hosts before scaling up production. This preliminary genetic engineering step establishes a controlled system that will subsequently produce high yields of enzyme with minimal purification requirements, avoiding the need to process large amounts of plant material.
Solution Approach 2:
The invention changes the production parameters by shifting from plant-based extraction to bacterial expression. This parameter change includes altering the host organism, cultivation conditions, and production scale, resulting in dramatically improved enzyme yield and simplified purification processes compared to traditional Jack Bean extraction.
3Reliability
If recombinant expression in yeast is used, then high levels of biologically active enzyme are produced with minimal contaminants, but requires development of expression systems and cultivation protocols
Solution Approach 1:
The patent uses yeast cells as an intermediary expression system to produce β-hexosaminidase. The yeast serves as a eukaryotic host that can properly fold and modify the enzyme, producing high-purity product with minimal contaminants. This intermediary system resolves the contradiction by providing a controlled environment that balances product purity with manufacturability.
Solution Approach 2:
The invention utilizes the universal capabilities of yeast expression systems, which can handle eukaryotic protein expression with proper post-translational modifications. This multi-functional platform can produce high-purity enzyme while incorporating built-in selection markers and induction systems that simplify the overall manufacturing process despite the initial development requirements.
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
This method yields active β-hexosaminidase with over 100 U/mL culture supernatant, facilitating straightforward purification and reducing production costs while maintaining enzyme integrity.
Implementation Method 1
a yeast cell comprising a polynucleotide encoding a polypeptide having β-hexosaminidase activity... cultivating said yeast cell under conditions which allow for the production of the polypeptide
Implementation Method 2
β-hexosaminidase (EC 3.2.1.52, abbreviated 'b-Hex' herein) is an enzyme that catalyzes the hydrolysis of terminal nonreducing N-acetylhexosamine residues in N-acetyl-beta-hexosaminides
Data Source
AI summary
The present invention relates to a method of producing a polypeptide having β-hexosaminidase activity, comprising the steps of a) providing a yeast cell comprising a polynucleotide encoding a polypeptide having β-hexosaminidase activity and having an amino acid sequence being at least 95% identical to the amino acid sequence shown in SEQ ID NO: 1, b) cultivating said yeast cell under conditions which allow for the production of the polypeptide, and c) obtaining the polypeptide produced in step b). The present invention further concerns a polynucleotide encoding a polypeptide having β-hexosaminidase activity and having an amino acid sequence being at least 95% identical to the amino acid sequence shown in SEQ ID NO: 1, as well as polypeptide encoded by said polynucleotide. Moreover, the present invention concerns a yeast cell comprising the polynucleotide of the present invention.