Reaction: S-adenosyl-L-methionine + emodin = S-adenosyl-L-homocysteine + questin
Glossary: emodin = 1,3,8-trihydroxy-6-methyl-9,10-anthraquinone
questin = 1,6-dihydroxy-8-methoxy-3-methyl-9,10-anthraquinone
Other name(s): EOMT
Systematic name: S-adenosyl-L-methionine:emodin 8-O-methyltransferase
Comments: The enzyme is involved in biosynthesis of the seco-anthraquinone (+)-geodin.
Links to other databases: BRENDA, EXPASY, KEGG Metacyc, CAS registry number:
1. Chen, Z.G., Fujii, I., Ebizuka, Y. and Sankawa, U. Emodin O-methyltransferase from Aspergillus terreus. Arch. Microbiol. 158 (1992) 29-34. [PMID: 1444712]