Biosynthetic Sclareol Production Using Enzymatic Segmentation

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Solution Overview

Problem

Current methods for producing sclareol are inefficient, reliant on fossil fuels, and subject to fluctuations in availability and quality due to dependence on plant extracts, with no economic synthetic process available for this valuable fragrance molecule.

Innovation Solution

A method involving the use of specific polypeptides, such as LPP synthase and sclareol synthase, to biosynthetically produce sclareol from geranylgeranyl pyrophosphate (GGPP) through a two-step mechanism, either in vitro or in vivo, using transformed host organisms or cells expressing these enzymes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If plant extracts are used as source of sclareol, then sclareol can be obtained from natural sources, but availability and quality fluctuate due to dependence on plant extracts

Engineering Contradiction:
Improveavailability and quality of sclareolVSAvoiddependence on plant extracts
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention segments the sclareol production process into two distinct enzymatic steps: first, copalyl diphosphate synthase converts geranylgeranyl pyrophosphate to copalyl diphosphate; second, sclareol synthase converts copalyl diphosphate to sclareol. This segmentation allows each enzyme to be independently optimized and expressed in host organisms, eliminating dependence on variable plant extracts while ensuring consistent availability and quality of sclareol.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If chemical synthesis is used to produce sclareol, then an alternative to plant extracts is provided, but the process is not economic due to complex structure

Engineering Contradiction:
Improvealternative to plant extractsVSAvoideconomic feasibility
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The invention replaces complex chemical synthesis mechanisms with biological enzymatic mechanisms. Two specific enzymes (copalyl diphosphate synthase and sclareol synthase) catalyze the formation of sclareol from geranylgeranyl pyrophosphate through sequential biochemical reactions. This substitution of chemical synthesis with enzymatic catalysis dramatically simplifies the manufacturing process, improves economic feasibility, and provides a scalable alternative to both plant extraction and chemical synthesis.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If conventional production methods are used, then sclareol can be produced, but energy consumption and waste are high

Engineering Contradiction:
Improvesclareol productionVSAvoidenergy consumption and waste
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The invention employs self-service principles by using host organisms (such as bacteria, yeast, or plant cells) that naturally possess or can be engineered to express the required enzymatic pathways. The host organism's cellular machinery automatically provides the necessary cofactors, energy carriers, and metabolic environment for the enzymes to function, eliminating the need for external energy input and complex process support systems. This results in highly efficient sclareol production with minimal energy consumption and waste generation.

Inventive Principle:
Principle #25Self-service

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 enables an economic, reliable, and reproducible production of sclareol with reduced waste and energy consumption, independent of fossil fuels, providing a stable source for perfumery and aroma applications.

Implementation Method 1

the cyclization mechanism is initiated by the ionization of the diphosphate ester function of GGPP, followed by the reaction of the resulting carbocation with an internal double bond

Methodology Applied
Scientific EffectIonization-dependent cyclization:

Implementation Method 2

The second mode of cyclization in the biosynthesis of diterpenes, catalyzed by class II diterpene synthases, is initiated by the protonation of the terminal double bond of GGPP

Methodology Applied
Scientific EffectProtonation-dependent cyclization:

Data Source

PatentUS8586328B2Method for producing sclareol
Publication Date: 2013.11.19 FIRMENICH SA
  • US8586328B2 patent drawing
  • US8586328B2 patent drawing
  • US8586328B2 patent drawing

AI summary

The present invention provides a method of producing sclareol, said method comprising contacting a particular polypeptide having a sclareol synthase activity with labdenediol diphosphate (LPP). In particular, said method may be carried out in vitro or in vivo to produce sclareol, a very useful compound in the fields of perfumery and flavoring. The present invention also provides the amino acid sequence of the polypeptide used in the method. A nucleic acid derived from Salvia sclarea and encoding the polypeptide of the invention, an expression vector containing said nucleic acid, as well as a non-human host organism or a cell transformed to harbor the same nucleic acid, are also part of the present invention.