Chooi, Yit-Heng; Wang, Peng; Fang, Jinxu; Li, Yanran; Wu, Katherine; Wang, Pin; Tang, Yi
The prenyltransferase (PTase) gene vrtC was proposed to be involved in viridicatumtoxin (1) biosynthesis in Penicillium aethiopicum. Targeted gene deletion and reconstitution of recombinant VrtC activity in vitro established that VrtC is a geranyl transferase that catalyzes a regiospecific Friedel-Crafts alkylation of the naphthacenedione carboxamide intermediate 2 at carbon 6 with geranyl diphosphate. VrtC can function in the absence of divalent ions and can utilize similar naphthacenedione...[Show more]
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