Beta-1,3-Glucan Phosphorylase Enzyme Synthesis
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Solution Overview
Problem
Current methods for producing beta-1,3-glucan are limited in efficiency and depend on beta-1,3-glucan synthase enzymes, and there is a need for alternative enzymatic processes that can produce beta-1,3-glucan with high purity and yield.
Innovation Solution
A reaction composition comprising water, alpha-G1P, an acceptor molecule, and a beta-1,3-glucan phosphorylase enzyme with an amino acid sequence at least 90% identical to specific SEQ IDs, which synthesizes beta-1,3-glucan, and a method involving heating and filtration to increase the concentration of dissolved beta-1,3-glucan, allowing for its precipitation and isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beta-1,3-glucan synthase enzymes are used to produce beta-1,3-glucan, then the production can occur in vivo, but the efficiency and purity are limited
Solution Approach 1:
The patent uses phosphorylase enzymes as intermediary catalysts to convert alpha-glucose-1-phosphate and acceptor molecules into beta-1,3-glucan through a controlled in vitro phosphorolytic process. This intermediary enzymatic system bypasses the limitations of direct synthase-based production, enabling high efficiency and purity through optimized reaction conditions and enzyme specificity.
Solution Approach 2:
The patent replaces the biological in vivo synthesis system (beta-1,3-glucan synthase) with an in vitro biochemical system using phosphorylase enzymes. This substitution allows for better control over reaction parameters, substrate availability, and product purification, thereby improving both productivity and manufacturing precision.
2Manufacturing precision
If alternative enzymatic processes are used to produce beta-1,3-glucan, then purity and yield can be improved, but the process complexity increases
Solution Approach 1:
The patent segments the beta-1,3-glucan production process into distinct stages: (1) enzyme preparation and activation, (2) controlled phosphorolytic synthesis using alpha-glucose-1-phosphate and acceptor molecules, (3) reaction condition optimization, and (4) product isolation. This segmentation allows each step to be independently optimized and controlled, improving purity without overwhelming complexity.
Solution Approach 2:
The patent employs systematic parameter changes including pH adjustment, temperature control, substrate concentration optimization, and enzyme dosage control to maximize purity and yield. By carefully tuning these parameters, the process achieves high manufacturing precision while maintaining manageable complexity through standardized protocol development.
3Quantity of substance
If beta-1,3-glucan is produced with high concentration, then yield is improved, but isolation and purification become more difficult
Solution Approach 1:
The patent performs preliminary actions during the synthesis phase by controlling molecular weight distribution, avoiding excessive branching, and maintaining soluble intermediate forms. These preliminary controls facilitate easier isolation and purification later, as the glucan maintains favorable physical properties for separation while achieving high yield.
Solution Approach 2:
The patent produces beta-1,3-glucan with controlled structural characteristics that replicate the desirable properties of natural glucans while simplifying isolation. By controlling the degree of polymerization and linkage patterns, the synthesized glucan mimics natural forms that are easier to purify, achieving high yield without compromising ease of manufacture.
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 approach enables the efficient production of beta-1,3-glucan with high purity and yield, independent of beta-1,3-glucan synthase, and allows for the processing of beta-1,3-glucan to enhance its concentration in solutions, facilitating its isolation and use in various applications.
Implementation Method 1
a beta-1,3-glucan phosphorylase enzyme comprising an amino acid sequence that is at least 90% identical to SEQ ID NO:2, SEQ ID NO:4, SEQ ID NO:6, SEQ ID NO:8, SEQ ID NO:10, or SEQ ID NO:12, wherein the enzyme synthesizes beta-1,3-glucan
Implementation Method 2
heating the aqueous composition to at least about 75° C., thereby dissolving the beta-1,3-glucan in the aqueous composition
Implementation Method 3
cooling the solution to a temperature at which the beta-1,3-glucan precipitates back to an insoluble state
Data Source
AI summary
Reaction compositions are disclosed herein comprising at least water, alpha-glucose-1-phosphate (alpha-G1P), an acceptor molecule, and a beta-1,3-glucan phosphorylase enzyme. These reactions can synthesize oligosaccharides and polysaccharides with beta-1,3 glycosidic linkages. Further disclosed are methods of isolating beta-1,3-glucan.