Manool Production via Copalyl Diphosphate Synthase Pathway
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Solution Overview
Problem
Current methods for producing (+)-manool are inefficient, as they often result in small amounts as a by-product during sclareol production, and there is a need for a more effective biochemical pathway to isolate and produce this terpene.
Innovation Solution
The method involves contacting geranylgeranyl diphosphate with a copalyl diphosphate synthase to form (9S, 10S)-copalyl diphosphate, followed by conversion with a sclareol synthase to produce (+)-manool, using enzymes with specific amino acid sequences that have high identity to SEQ ID NO: 1 and SEQ ID NO: 2, and optionally isolating the (+)-manool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If sclareol production is performed using labdenyl diphosphate synthase and sclareol synthase, then sclareol is produced, but only small amounts of (+)-manool are obtained as a by-product
Solution Approach 1:
The patent extracts and isolates the specific enzymatic pathway for (+)-manool production by using copalyl diphosphate synthase to selectively produce copalyl diphosphate as a separate step, which is then converted to (+)-manool by sclareol synthase. This separates the (+)-manool production pathway from the sclareol production pathway, allowing focused optimization of (+)-manool yields without being limited to trace by-product formation.
Solution Approach 2:
The patent changes the substrate parameters by using geranylgeranyl diphosphate (GGPP) as the starting material and copalyl diphosphate synthase to produce copalyl diphosphate with specific stereochemistry ((9S,10S)-configuration). This parameter change in substrate structure and enzyme specificity enables high-yield (+)-manool production rather than trace by-product formation.
2Quantity of substance
If copalyl diphosphate synthase from Salvia miltiorrhiza is used, then copalyl diphosphate is formed, but the production of (+)-manool requires additional optimization
Solution Approach 1:
The patent performs preliminary action by first using copalyl diphosphate synthase to produce copalyl diphosphate, which is then used as the substrate for sclareol synthase to produce (+)-manool. This two-step preliminary enzymatic preparation simplifies the overall process by breaking down the complex transformation into manageable stages with optimized intermediates.
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
This approach allows for the efficient production of (+)-manool with high purity, achieving yields of at least 98% and enabling the derivation of various manool derivatives, such as manool acetate and copalol, through enzymatic or chemical processes.
Implementation Method 1
contacting geranylgeranyl diphosphate with a copalyl diphosphate synthase to form a (9S, 10S)-copalyl diphosphate
Implementation Method 2
contacting the (9S, 10S)-copalyl diphosphate CPP with a sclareol synthase to form (+)-manool
Data Source
Figure 1
Figure 2A~2C
Figure 3A~3D
AI summary
Provided herein are methods of producing (+)-manool comprising: contacting geranylgeranyl diphosphate with an copalyl diphosphate (CPP) synthase to form a (9S, 10S)-copalyl diphosphate wherein the CPP synthase comprises an amino acid sequence having at least 90%, 95%, 98%), 99% and 100% sequence identity to a polypeptide selected from the group consisting of SEQ ID NO: 1 and SEQ ID NO:2; and contacting the CPP with a sclareol synthase enzyme to form (+)-manool.