variants also adenosylmethionine
(ˌes-)ə-ˌden-ə-ˌsil-mə-ˈthī-ə-ˌnēn, (ˌes-)ˌad-ᵊn-ə-ˌsil-
: the active sulfonium form of methionine C15H22N6O5S that acts as a methyl group donor in various biochemical transmethylation reactions (as the formation of epinephrine or creatine), that is formed when methionine reacts with ATP, and that is an intermediate in the formation of homocysteine see same

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Cite this Entry

“S-adenosylmethionine.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/S-adenosylmethionine. Accessed 19 Jun. 2024.

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