A versiconal hemiacetal acetate converting enzyme in aflatoxin biosynthesis
Cite this article as: Hsieh, D.P.H., Wan, C.C. & Billington, J.A. Mycopathologia (1989) 107: 121. doi:10.1007/BF00707548 Abstract
Conversion of the aflatoxin biosynthetic intermediate versiconal hemiacetal acetate (VHA) in a cell free extract of
Aspergillus parasiticus ATCC 15517 is investigated. The enzymatic reaction is monitored by a method using high performance liquid chromatography (HPLC). The major product of the enzymatic reaction is a water soluble compound not chloroform-extractable at pH 7.5. The product becomes chloroform extractable upon acidification of the reaction medium and is separated and quantitated by reversed-phase HPLC. It is tentatively identified as ‘versiconal hemiacetal alcohol,’ which is converted to versicolorin C (VC) upon acid treatment. Key words aflatoxin biosynthesis Aspergillus parasiticus versiconal hemiacetal acetate versicolorin C enzymology References
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© Kluwer Academic Publishers 1989