Abstract Background The biosynthesis of aflatoxin (AF) involves over 20 enzymatic reactions in a complex polyketide pathway that converts acetate and malonate to the intermediates sterigmatocystin (ST) and O-methylsterigmatocystin (OMST). the respective penultimate and ultimate precursors of AF. Although these precursors are chemically and structurally very similar. their accumulation... https://www.markbroyard.com/