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Updated: Feb 28, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
A heme-dependent enzyme forms the nitrogen-nitrogen bond in piperazate
Yi-Ling Du1,2, Hai-Yan He2, Melanie A Higgins2
1Institute of Pharmaceutical Biotechnology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China.
Researchers discovered a novel enzyme, KtzT, that catalyzes nitrogen-nitrogen (N-N) bond formation. This enzyme is crucial for synthesizing piperazate, a key component in nonribosomal peptides.
Area of Science:
- Biochemistry
- Enzymology
- Organic Chemistry
Background:
- Nitrogen-nitrogen (N-N) linkages are present in diverse biologically active molecules.
- The enzymatic catalysis of N-N bond formation in organic molecules remained uncharacterized until now.
Purpose of the Study:
- To identify and characterize an enzyme responsible for catalyzing N-N bond formation.
- To elucidate the role of this enzyme in the biosynthesis of piperazate.
Main Methods:
- Enzyme isolation and characterization from Kutzneria sp. 744.
- Biochemical assays to demonstrate catalytic activity.
- Analysis of piperazate biosynthesis pathway.
Main Results:
- The heme-dependent enzyme KtzT was identified.
- KtzT was shown to catalyze N-N bond formation.
- Piperazate, a building block for nonribosomal peptides, is synthesized via KtzT activity.
Conclusions:
- KtzT is the first demonstrated enzyme catalyzing N-N bond formation in organic molecule biosynthesis.
- This discovery opens new avenues for understanding and engineering N-N bond-containing natural products.
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