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Updated: May 6, 2026

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

Structure-guided engineering of CYP82D213 for enhanced triptonide biosynthesis.

Shijun Yuan¹, Lingfang Feng², Yao Xu²

¹School of Pharmacy, Hubei University of Chinese Medicine, Wuhan, China; State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China.

Enzyme and Microbial Technology

|February 19, 2026

Summary

Protein engineering enhanced the activity of CYP82D213, improving the production of triptonide (TN), a bioactive diterpenoid. This study reveals a dynamic catalytic mechanism for complex enzyme catalysis.

Keywords:

Enzyme engineering Semi-rational design Substrate repositioning Tri-epoxidation Triptonide

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Last Updated: May 6, 2026

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

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Published on: October 4, 2019

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Published on: September 28, 2022

Construction of Cyclic Cell-Penetrating Peptides for Enhanced Penetration of Biological Barriers

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Published on: September 19, 2022

Area of Science:

Biochemistry
Enzymology
Natural Product Biosynthesis

Background:

Triptonide (TN) is a bioactive diterpenoid triepoxide from Tripterygium wilfordii with pharmaceutical potential.
The terminal tri-epoxidation step in TN biosynthesis, catalyzed by CYP82D213, is crucial but poorly understood due to low enzyme activity.

Purpose of the Study:

To elucidate the catalytic mechanism of CYP82D213 and enhance its activity through protein engineering.
To develop a rational design strategy for improving complex multi-step enzyme catalysis.

Main Methods:

Employed a comprehensive protein engineering strategy including structure-guided mutagenesis and motif-driven engineering.
Identified key residues (G128, W129, L396) for substrate recognition and dynamic conformation.
Generated synergistic double and triple mutants (H425Q/L459M, H425Q/L459M/T365R) to enhance enzyme activity.

Main Results:

Structure-guided mutagenesis identified critical residues for substrate recognition and enzyme dynamics.
A double mutant (H425Q/L459M) showed a 2.30-fold increase in activity.
A triple mutant (H425Q/L459M/T365R) achieved a 2.63-fold increase in TN production compared to wild-type, suggesting a dynamic catalytic mechanism involving substrate repositioning.

Conclusions:

Protein engineering strategies can effectively enhance the activity of complex enzymes like CYP82D213.
The study provides insights into the dynamic catalytic mechanism of tri-epoxidation.
This work offers a rational design approach for optimizing multi-step enzymatic processes in natural product biosynthesis.