ID 2.1.1.109 DE demethylsterigmatocystin 6-O-methyltransferase. CA 6-demethylsterigmatocystin + S-adenosyl-L-methionine = H(+) + S-adenosyl- CA L-homocysteine + sterigmatocystin. CC -!- Dihydrodemethylsterigmatocystin can also act as acceptor. CC -!- Involved in the biosynthesis of aflatoxins in fungi. DR Q9UQY0, AFLO_ASPPU ; Q9P900, OMTB_ASPFN ; P9WEP8, STCP_EMENI ; //