Arabidopsis cytochrome P450s that catalyze the first step of tryptophan-dependent indole-3-acetic acid biosynthesis.
basic_science · Level V
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- Record sourced from PubMed, PMID 10681464.
- Also identified by PMC identifier 15809.
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Abstract
Plants synthesize numerous secondary metabolites that are used as developmental signals or as defense against pathogens. Tryptophan (Trp)-derived secondary metabolites include camalexin, indole glucosinolates, and indole-3-acetic acid (IAA); however, the steps in their synthesis from Trp or its precursors remain unclear. We have identified two Arabidopsis cytochrome P450s (CYP79B2 and CYP79B3) that can convert Trp to indole-3-acetaldoxime (IAOx), a precursor to IAA and indole glucosinolates.
Medical subject headings
- Arabidopsis Proteins
- Cytochrome P-450 Enzyme System
- Indoleacetic Acids
- Tryptophan