Recombinant Patchoulol Synthase for Stable Sesquiterpene Production
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Solution Overview
Problem
Current methods for producing patchoulol, such as steam-distillation of patchouli plants, are inefficient and subject to fluctuations in supply due to climate change, trade speculation, and plant diseases, and existing patchoulol synthases have drawbacks like low expression and specificity in industrial production processes.
Innovation Solution
A novel patchoulol synthase with improved expression and specificity, capable of producing patchoulol, elemol, and pogostol, is identified, allowing for efficient conversion of FPP into these sesquiterpenes, particularly at neutral or alkaline pH, and in intracellular conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steam-distillation of patchouli plants is used to produce patchoulol, then patchoulol can be obtained from natural sources, but the supply is subject to fluctuations due to climate change, trade speculation, and plant diseases
Solution Approach 1:
The patent creates a recombinant host cell that copies the patchoulol synthase gene from natural sources and expresses it artificially. This allows production of patchoulol without relying on natural patchouli plants, eliminating supply fluctuations caused by climate, trade, and disease while maintaining the ability to produce the desired terpenes
Solution Approach 2:
The patent replaces the mechanical/biological process of steam-distillation with a biochemical enzymatic process using recombinant patchoulol synthase. This substitution enables controlled production in host cells, providing reliable supply independent of agricultural conditions while improving production efficiency through optimized enzymatic activity
2Manufacturing precision
If existing patchoulol synthases are used in industrial production processes, then patchoulol can be produced, but the expression levels are low and specificity is poor
Solution Approach 1:
The patent identifies and characterizes a specific patchoulol synthase variant with optimized parameters for industrial production. The enzyme exhibits improved expression levels and specificity through natural variation or selection, producing patchoulol as the major product with minimal side products. The enzyme's activity is further optimized by controlling pH conditions (neutral or alkaline) and substrate availability in the host cell
Solution Approach 2:
The patent achieves high product specificity by optimizing local conditions within the host cell, including pH control (neutral or alkaline environments), substrate concentration (FPP availability), and enzyme localization. These localized optimizations ensure the synthase produces patchoulol with high specificity while maintaining high production rates
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 novel patchoulol synthase achieves high specificity and production rates for patchoulol and elemol, with favorable product ratios, enhancing industrial patchoulol production processes and providing a stable alternative to traditional methods.
Implementation Method 1
A patchoulol synthase, to a nucleic acid encoding said patchoulol synthase, to an expression vector comprising said nucleic acid, to a host cell comprising said expression vector, to a method of preparing patchoulol and elemol, and preferably also pogostol
Data Source
AI summary
The invention is directed to a patchoulol synthase, to a nucleic acid encoding said patchoulol synthase, to an expression vector comprising said nucleic acid, to a host cell comprising said expression vector, to a method of preparing patchoulol and elemol, and preferably also pogostol, and to a method of preparing a patchoulol synthase.