A biosynthetic gene cluster similar to that for andrastin A (1) was discovered in Emericella variecolor NBRC 32302. Ctr-P450, a cytochrome P450 uniquely present in the cluster, was coexpressed with the andrastin A biosynthetic genes, leading to the production of the antifeedant agent citreohybridonol (4), along with four new andrastin derivatives. The results revealed the unusual multifunctionality of Ctr-P450 and indicated that this approach can be applied for further natural product diversification.
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Matsuda et al. (2016) studied this question.
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