FEBS Lett. 2006 Feb 20;580(5):1411-6. Epub 2006 Jan 30.

Artemisia annua L. (Asteraceae) trichome-specific cDNAs reveal CYP71AV1, a cytochrome P450 with a key role in the biosynthesis of the antimalarial sesquiterpene lactone artemisinin.

Teoh KH, Polichuk DR, Reed DW, Nowak G, Covello PS.

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Plant Biotechnology Institute, 110 Gymnasium Place, Saskatoon, Sask., Canada S7N OW9.

Abstract

Artemisinin, a sesquiterpene lactone endoperoxide derived from the plant Artemisia annua, forms the basis of the most important treatments of malaria in use today. In an effort to elucidate the biosynthesis of artemisinin, an expressed sequence tag approach to identifying the relevant biosynthetic genes was undertaken using isolated glandular trichomes as a source of mRNA. A cDNA clone encoding a cytochrome P450 designated CYP71AV1 was characterized by expression in Saccharomyces cerevisiae and shown to catalyze the oxidation of the proposed biosynthetic intermediates amorpha-4,11-diene, artemisinic alcohol and artemisinic aldehyde. The identification of the CYP71AV1 gene should allow for the engineering of semi-synthetic production of artemisinin in appropriate plant or microbial hosts.

PMID:: 16458889; [PubMed - indexed for MEDLINE]

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Artemisia annua L. (Asteraceae) trichome-specific cDNAs reveal CYP71AV1, a cytochrome P450 with a key role in the biosynthesis of the antimalarial sesquiterpene lactone artemisinin.

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