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. Author manuscript; available in PMC: 2011 Jul 14.
Published in final edited form as: Chembiochem. 2009 Jan 26;10(2):304–314. doi: 10.1002/cbic.200800527

Scheme 2.

Scheme 2

Proposed biosynthetic pathway to cetoniacytone A. Dashed-box indicates putative pathways that may involve the oxidoreductases CetF1, CetF2, CetG, and CetI, as well as the hypothetical proteins related to the cupin superfamily, CetC, CetJ1, CetK1 and CetK2.