Manool Biosynthesis via Copalyl Diphosphate Synthase and Sclareol Synthase
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Solution Overview
Problem
Current methods for producing (+)-manool are inefficient and lack specificity, as they rely on complex enzyme combinations and require optimization of enzyme sequences for effective diterpene synthesis.
Innovation Solution
A biochemical method involving copalyl diphosphate synthase and sclareol synthase enzymes, where specific amino acid sequences with high identity to SEQ ID NO: 14 or 15 and SEQ ID NO: 4 or 5 are used to convert geranylgeranyl diphosphate into (+)-manool, with optional isolation and further processing of the derivative.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If complex enzyme combinations are used for producing (+)-manool, then the production capability is achieved, but the manufacturing complexity and optimization requirements increase
Solution Approach 1:
The patent combines multiple enzyme functions (copalyl diphosphate synthase and sclareol synthase) into a coordinated biosynthetic system within host cells, where the enzymes work together in a unified pathway to convert GGPP to (+)-manool, reducing the need for separate production steps and optimization processes
Solution Approach 2:
The engineered host cells serve multiple functions: they produce the precursor GGPP, express the required synthase enzymes, and perform the complete biosynthetic conversion to (+)-manool, eliminating the need for separate enzyme preparation and reaction systems
2Productivity
If existing diterpene synthases are used, then the general diterpene production is achieved, but the specificity for (+)-manool production is insufficient
Solution Approach 1:
The patent introduces specific sequence variations in the copalyl diphosphate synthase and sclareol synthase enzymes that are localized to critical regions responsible for substrate binding and catalysis, thereby enhancing the specificity for (+)-manool production while maintaining overall enzyme functionality
Solution Approach 2:
The patent modifies amino acid sequences of the synthase enzymes to change their catalytic parameters, specifically optimizing them for producing (+)-manool over other diterpene products, thereby achieving high manufacturing precision for the target compound
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 method achieves high purity and yield of (+)-manool, with the ability to produce it in various derivatives, demonstrating improved efficiency and specificity in diterpene synthesis compared to existing approaches.
Implementation Method 1
contacting geranylgeranyl diphosphate (GGPP) with a copalyl diphosphate (CPP) synthase to form a copalyl diphosphate
Implementation Method 2
contacting the CPP with a sclareol synthase to form (+)-manool
Data Source
Figure 1
Figure 2
Figure 3A~3C
AI summary
Provided herein are methods of producing (+)-manool comprising: contacting geranylgeranyl diphosphate with a copalyl diphosphate (CPP) synthase to form a (9S, 10S)-copalyl diphosphate and contacting the CPP with a sclareol synthase enzyme to form (+)-manool and derivatives thereof. Also provided are nucleic acids encoding CPP synthases and sclareol synthases for use in the methods. Further provided are expression vectors and non-human host organisms and cells comprising nucleic acids encoding a CPP synthase and a sclareol synthase as described herein.