Glutaric Acid Transporter Gene Enhances Microbial Yield
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Solution Overview
Problem
Current methods for producing glutaric acid using recombinant microorganisms are limited by the lack of an efficient glutaric acid transporter, resulting in low yields and inefficient accumulation of the compound within cells.
Innovation Solution
Introduction of the ynfM gene, which encodes a polypeptide with glutaric acid transporter activity, into a microorganism capable of producing glutaric acid, enhancing its ability to transport and produce the compound.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a microorganism is engineered to produce glutaric acid through metabolic pathways, then glutaric acid production capability is improved, but the accumulation efficiency and yield are limited due to lack of efficient transporter
Solution Approach 1:
The patent introduces a glutaric acid transporter protein as an intermediary component that mediates the transport of glutaric acid across the cell membrane. This transporter acts as a bridge between the intracellular production pathway and extracellular accumulation, enabling efficient export of the produced glutaric acid and thereby resolving the contradiction between production capability and accumulation yield.
Solution Approach 2:
The patent modifies the transport parameter by introducing a specific transporter protein that changes the membrane permeability characteristics for glutaric acid. This parameter change enables efficient glutaric acid efflux, transforming the system from one with limited accumulation to one with high yield capability, thus resolving the contradiction between production and accumulation.
2Reliability
If glutaric acid is produced intracellularly through metabolic engineering, then production pathway functionality is improved, but cellular accumulation becomes inefficient without dedicated transport mechanism
Solution Approach 1:
The patent segments the glutaric acid production system into two distinct functional modules: (1) the intracellular production pathway responsible for synthesizing glutaric acid, and (2) the membrane transporter responsible for exporting it. This segmentation allows each component to be optimized independently, with the production pathway maintaining its reliability while the transporter ensures high accumulation efficiency.
Solution Approach 2:
The glutaric acid transporter serves as an intermediary component that connects the reliable intracellular production pathway with the extracellular environment. By introducing this mediator, the system achieves both reliable production and efficient accumulation, as the transporter handles the specific function of glutaric acid export without interfering with the production pathway's functionality.
Data Source
AI summary
The present invention relates to a recombinant microorganism imparted with increased ability to produce glutaric acid by further introducing a gene encoding a polypeptide having glutaric acid transporter activity into a microorganism having ability to produce glutaric acid, and to a method of preparing glutaric acid using the recombinant microorganism. According to the present invention, glutaric acid used for the preparation of various compounds such as polyamide, polyurethane, 1,5-pentanediol, and 5-hydroxyvaleric acid can be biosynthesized at high yield.