IUBMB Enzyme Nomenclature


Accepted name: methanethiol S-methyltransferase

Reaction: S-adenosyl-L-methionine + methanethiol = S-adenosyl-L-homocysteine + dimethyl sulfide

Other name(s): mddA (gene name)

Systematic name: S-adenosyl-L-methionine:methanethiol S-methyltransferase

Comments: The enzyme, found in many bacterial taxa, is involved in a pathway that converts L-methionine to dimethyl sulfide.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:


1. Carrion, O., Curson, A.R., Kumaresan, D., Fu, Y., Lang, A.S., Mercade, E. and Todd, J.D. A novel pathway producing dimethylsulphide in bacteria is widespread in soil environments. Nat Commun 6 (2015) 6579. [PMID: 25807229]

[EC created 2016]

Return to EC 2.1.1 home page
Return to EC 2.1 home page
Return to EC 2 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page