1.14.14.116 malfunction disruption of the avnA gene in the wild type aflatoxigenic Aspergillus parasiticus strain SU1-N3 results in a nonaflatoxigenic mutant which accumulates a bright yellow pigment. Norsolorinic acid and averantin are not converted to aflatoxin by the mutant whereas 5'-hydroxyaverantin, averufanin, averufin, versicolorin A, sterigmatocystin, and O-methylsterigmatocystin are converted to aflatoxins -, 721321 1.14.14.116 metabolism the enzyme is involved in the conversion of averantin to averufin in the aflatoxin biosynthetic pathway -, 721321