Methyl halide transferase

{{Infobox enzyme

| Name = Methyl halide transferase

| EC_number = 2.1.1.165

| CAS_number =

| GO_code =

| image =

| width =

| caption =

}}

Methyl halide transferase ({{EC number|2.1.1.165}}, MCT, methyl chloride transferase, S-adenosyl-L-methionine:halide/bisulfide methyltransferase, AtHOL1, AtHOL2, AtHOL3, HMT, S-adenosyl-L-methionine: halide ion methyltransferase, SAM:halide ion methyltransferase) is an enzyme with systematic name S-adenosylmethionine:iodide methyltransferase.{{cite journal | title = Expression of Batis maritima methyl chloride transferase in Escherichia coli |author1 = Ni, X. |author2 =Hager, L.P. |journal = Proc. Natl. Acad. Sci. USA |date = 1999 |volume = 96 |pages = 3611–3615 |pmid = 10097085 | doi = 10.1073/pnas.96.7.3611 | issue = 7 | pmc = 22342|bibcode = 1999PNAS...96.3611N |doi-access = free }}{{cite journal | title = Biochemical characterization of chloromethane emission from the wood-rotting fungus Phellinus pomaceus |author1 = Saxena, D. |author2 =Aouad, S. |author3 =Attieh, J. |author4 =Saini, H.S. |journal = Appl. Environ. Microbiol. |date = 1998 |volume = 64 |pages = 2831–2835 |pmid = 9687437 | issue = 8 |doi = 10.1128/AEM.64.8.2831-2835.1998 | pmc = 106779|bibcode = 1998ApEnM..64.2831S }}{{cite journal | title = Purification and characterization of a novel methyltransferase responsible for biosynthesis of halomethanes and methanethiol in Brassica oleracea |author1 = Attieh, J.M. |author2 =Hanson, A.D. |author3 =Saini, H.S. |journal = J. Biol. Chem. |date = 1995 |volume = 270 |pages = 9250–9257 |pmid = 7721844 | doi = 10.1074/jbc.270.16.9250 | issue = 16|doi-access = free }}{{cite journal | title = Involvement of S-adenosylmethionine-dependent halide/thiol methyltransferase (HTMT) in methyl halide emissions from agricultural plants: isolation and characterization of an HTMT-coding gene from Raphanus sativus (daikon radish) |author1 = Itoh, N. |author2 =Toda, H. |author3 =Matsuda, M. |author4 =Negishi, T. |author5 =Taniguchi, T. |author6 =Ohsawa, N. | journal = BMC Plant Biol. |date = 2009 |volume = 9 |pages = 116 |pmid = 19723322 | doi = 10.1186/1471-2229-9-116 | pmc = 2752461 |doi-access = free }}{{cite journal | title = Purification and characterization of a monohalomethane-producing enzyme S-adenosyl-L-methionine: halide ion methyltransferase from a marine microalga, Pavlova pinguis |author1 = Ohsawa, N. |author2 =Tsujita, M. |author3 =Morikawa, S. |author4 =Itoh, N. |journal = Biosci. Biotechnol. Biochem. |date = 2001 |volume = 65 |pages = 2397–2404 |pmid = 11791711 | doi = 10.1271/bbb.65.2397 | issue = 11|doi-access = free }}{{cite journal | title = Characterization of three halide methyltransferases in Arabidopsis thaliana |author1 = Nagatoshi, Y. |author2 = Nakamura, T. |journal = Plant Biotechnol. |date = 2007 |volume = 24 |issue = 5 |pages = 503–506 |doi=10.5511/plantbiotechnology.24.503|doi-access = free }} This enzyme catalyses the following chemical reaction

: S-adenosyl-L-methionine + iodide $\backslash rightleftharpoons$ S-adenosyl-L-homocysteine + methyl iodide

This enzyme contributes to the methyl halide emissions from Arabidopsis thaliana.