Abstract
We isolated a cDNA encoding a novel cytochrome P450 (CYP93A1) from soybean suspension-cultured cells that had been treated with methyl jasmonate (MeJA). The amino acid sequence of the gene product had 30–40% identity with those of other plant P450s. The protein contained the heme-binding domain which is highly conserved among plant P450s. Transcription of the cytochrome P450 gene in soybean cells was induced by 30 μM MeJA even in the presence of cycloheximide, and reached maximum level 6 h after MeJA treatment. This is the first report of a plant cytochrome P450 gene whose transcription is induced by MeJA even without protein synthesis.
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