Application of a lignin monomer transporter

A novel lignin transporter, LAT, was screened using the deep learning model EACR, which solved the problem of low lignin utilization efficiency in microorganisms, realized the efficient transport and simultaneous biosynthesis of aromatic compounds, and improved the economics and industrial application prospects of lignin utilization.

CN121674449BActive Publication Date: 2026-06-30TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
Filing Date
2026-02-11
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, the transmembrane transport system for lignin-derived aromatic compounds by microorganisms is inefficient. Traditional methods rely on sequence homology prediction, which makes it difficult to discover novel transport proteins, resulting in low lignin utilization efficiency.

Method used

By using the deep learning-driven protein-ligand affinity prediction model EACR, a novel lignin-derived aromatic transporter (LAT) was screened and heterologously expressed in Pichia pastoris to construct an engineered strain that efficiently utilizes lignin, thereby achieving the synchronous biosynthesis of aromatic compounds.

Benefits of technology

This method enables microorganisms to directly utilize lignin-derived aromatic compounds as a carbon source and simultaneously produce high-value products, overcoming carbon flow conflicts in traditional pathways and improving the economic feasibility and industrial application potential of lignin utilization.

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Abstract

This invention belongs to the field of biotechnology and discloses the application of a lignin monomer transporter protein. The amino acid sequence of the lignin monomer transporter protein is shown in SEQ ID No: 1. The application is for constructing recombinant strains grown in a culture medium containing lignin-derived aromatic compounds, or for constructing recombinant strains producing microbial proteins and / or lipids. This invention, through the discovery of a novel lignin monomer transporter protein driven by deep learning, breaks through the metabolic bottleneck of lignin utilization, uncovers a key protein for lignin monomer transport, which can endow microbial chassis with lignin monomer transport capabilities, providing a multifunctional microbial platform for sustainable biorefining.
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