Abstract
There is much interest in understanding the pathways that trigger biosynthesis of the plant hormone auxin. In this issue, Stepanova et al. (2008) and Tao et al. (2008) reveal that a small family of tryptophan aminotransferases catalyze formation of indole-3-pyruvic acid (IPA) from L-tryptophan (L-Trp), the first step in a pathway for auxin biosynthesis.
MeSH terms
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Arabidopsis / enzymology*
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Arabidopsis / genetics*
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Arabidopsis / physiology
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Arabidopsis Proteins / genetics
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Arabidopsis Proteins / metabolism*
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Biosynthetic Pathways
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Gene Expression Regulation, Plant
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Indoleacetic Acids / metabolism*
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Indoles
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Tryptophan Transaminase / genetics
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Tryptophan Transaminase / metabolism*
Substances
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Arabidopsis Proteins
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Indoleacetic Acids
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Indoles
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indol-3-yl pyruvic acid
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Tryptophan Transaminase