Variant α-Amylase Composition for Robust Starch Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for more robust and better performing α-amylases for use in detergent compositions, particularly those that produce significant amounts of maltopentaose and maltohexaose for effective cleaning and starch hydrolysis.
Innovation Solution
A recombinant, non-naturally-occurring variant of α-amylase with specific amino acid substitutions, such as T51V and S125R, is developed to enhance cleaning performance and starch hydrolysis in home care compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional α-amylases are used in detergent compositions, then basic starch hydrolysis is achieved, but cleaning performance is insufficient and robustness is inadequate
Solution Approach 1:
The patent applies parameter changes by introducing specific amino acid substitutions (T51V and S125R) at defined positions in the α-amylase protein sequence. These molecular parameter changes optimize the enzyme's structure and function, resulting in enhanced robustness and cleaning performance while maintaining high sequence identity (≥80%) to the parent enzyme.
Solution Approach 2:
The patent applies local quality by making targeted modifications at specific locations (positions 51 and 125) within the α-amylase protein structure. These localized amino acid changes specifically improve catalytic efficiency and starch binding characteristics without compromising the overall enzyme structure or requiring changes to other regions.
2Productivity
If α-amylases producing maltopentaose and maltohexaose are used, then cleaning performance improves, but the need for ever-more robust engineered variants persists
Solution Approach 1:
The patent continues the trajectory of parameter changes by introducing additional amino acid substitutions (T51V and S125R) that specifically enhance the production of maltopentaose and maltohexaose. These changes optimize the enzyme's catalytic parameters to achieve both improved cleaning performance and increased robustness in engineered variants.
Solution Approach 2:
The patent applies composite materials by creating an engineered α-amylase variant that combines multiple optimized features: the parent enzyme's basic functionality, the maltopentaose/maltohexaose production capability, and the new T51V/S125R substitutions for enhanced robustness. This composite enzyme structure integrates multiple functional elements into a single superior molecule.
3Productivity
If amino acid substitutions are introduced to enhance catalytic efficiency, then starch hydrolysis improves, but non-productive starch binding may increase
Solution Approach 1:
The patent applies local quality by making precise amino acid changes at positions 51 and 125 that specifically address non-productive binding. The T51V and S125R substitutions locally modify the enzyme's interaction interface with starch, improving catalytic efficiency while preventing non-productive binding through targeted structural optimization.
Solution Approach 2:
The patent applies the blessing in disguise principle by converting the potential harmful effect of increased starch binding (which could lead to non-productive binding) into a beneficial effect. The amino acid substitutions are designed to enhance productive catalytic binding while eliminating non-productive interactions, turning a potential disadvantage into an advantage for overall catalytic efficiency.
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 variant α-amylase demonstrates improved cleaning performance and starch hydrolysis, particularly in dishwashing applications, by reducing non-productive starch binding and enhancing catalytic efficiency.
Implementation Method 1
α-amylases hydrolyze starch, glycogen, and related polysaccharides by cleaving internal α-1,4-glucosidic bonds at random
Implementation Method 2
The variant α-amylase demonstrates improved cleaning performance and starch hydrolysis, particularly in dishwashing applications, by reducing non-productive starch binding and enhancing catalytic efficiency
Data Source
Figure 1
Figure 1
Figure 2
AI summary
The present invention relates to home care compositions comprising a surfactant and an amylase.