Engineered Pyocyanin Demethylases for Stable Phenazine Breakdown
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Solution Overview
Problem
Existing methods are inadequate for effectively inhibiting the viability and antibiotic resistance of phenazine-producing bacteria, particularly in therapeutic and diagnostic applications.
Innovation Solution
Development of engineered pyocyanin demethylases with specific amino acid replacements, combined with antibiotics, to demethylate phenazines and synergistically inhibit bacterial viability and resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional phenazine degradation methods are used, then some bacterial viability reduction is achieved, but the inhibition efficacy is insufficient and antibiotic resistance remains high
Solution Approach 1:
The patent applies parameter changes by modifying specific amino acid residues (A53, I73, A87, T91, M99, A129, K141) in the pyocyanin demethylase enzyme sequence. These mutations alter the enzyme's catalytic parameters to enhance its demethylase activity toward phenazines, thereby improving bacterial viability inhibition efficacy while reducing antibiotic resistance
Solution Approach 2:
The patent employs composite materials by combining engineered pyocyanin demethylase enzyme with antibiotic agents. This combination creates a synergistic system where the enzyme degrades phenazines and the antibiotic provides additional bacterial killing activity, achieving superior inhibition efficacy compared to either agent alone
2Productivity
If pyocyanin demethylase activity is increased, then phenazine degradation efficiency improves, but enzyme stability and yield become compromised
Solution Approach 1:
The patent applies parameter changes by introducing specific amino acid mutations (A53L/N/V, I73I/E/K/L/Q/R/T/V, A87C/I/T/V, T91V, M99M/C/F/I/K/R/V/Y, A129A/C/S/T/V, K141K/S/T) that simultaneously enhance catalytic activity and improve enzyme stability. These mutations optimize the enzyme's structural and functional parameters to achieve both high phenazine degradation efficiency and enhanced stability
Solution Approach 2:
The patent employs copying by creating multiple engineered variants of the pyocyanin demethylase enzyme through systematic amino acid replacements at specific positions. These variants are designed to replicate and improve upon the wild-type enzyme's functionality, achieving enhanced stability and yield while maintaining high catalytic activity
3Ease of operation
If single agent therapy is used, then treatment simplicity is maintained, but synergistic inhibition of bacterial viability and resistance is insufficient
Solution Approach 1:
The patent applies merging by combining engineered pyocyanin demethylase enzyme therapy with antibiotic agents into a unified treatment system. This combination merges the phenazine degradation capability of the enzyme with the bactericidal activity of the antibiotic, achieving synergistic inhibition of bacterial viability and resistance while maintaining treatment feasibility
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 engineered pyocyanin demethylases enhance stability and activity, effectively reducing bacterial survivability and antibiotic resistance, offering a potent solution for bacterial infections and infections by phenazine-producing bacteria.
Implementation Method 1
engineered pyocyanin demethylases which are based on the surprising identification of replacement in in positions A53, I73, A87, T91, M99, A129 and K141 of pyocyanin demethylase PodA... configured to be capable of the engineered pyocyanin demethylase... to demethylate pyocyanin and/or a pyocyanin-like phenazines
Data Source
AI summary
Provided herein are engineered pyocyanin demethylases having replacements in in positions A53, I73, A87, T91, M99, A129 and K141 of pyocyanin demethylase PodA of SEQ ID NO: 1 or a derivative thereof and related phenazine degrading agents, compositions, methods and systems, as well as a combined administration of one or more pyocyanin demethylases and antibiotics and/or antibiotics resulting in a synergic inhibition of viability of phenazine producing bacteria, and related phenazine degrading agents, compositions, methods and systems.