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. 1990 Apr;110(1):31-5.
doi: 10.1007/BF00442767.

Conversion of versiconal acetate to versiconal and versicolorin C in extracts from Aspergillus parasiticus

J A Anderson  1 , C H Chung
Affiliations

Conversion of versiconal acetate to versiconal and versicolorin C in extracts from Aspergillus parasiticus

J A Anderson et al. Mycopathologia. 1990 Apr.

Abstract

The primary product of hydrolysis of versiconal acetate catalyzed by porcine liver esterase and the 35-70% ammonium sulfate fraction from a soluble extract from mycelia of Aspergillus parasiticus was versiconal. Versiconal was stable at neutral pH for several hours and was rapidly converted to versicolorin C by treatment with 0.4 M HCl. The addition of NADPH to the 35-70% ammonium sulfate fraction resulted in conversion of versiconal acetate to both versiconal and versicolorin C. The conversion of versiconal acetate to versicolorin C in the cell-free system is proposed to involve an esterase and an NADPH-dependent cyclase.

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