S-adenosyl-l-methionine

S-adenosyl-l-methionine
Condensation product of adenosine and l-methionine involving replacement of the —OPO3H2 of adenylic acid by —S+(CH3)CH2CH2CH(NH3+)CO2 of methionine; a sulfonium compound bearing a methyl group that is transferred in transmethylation reactions. SEE ALSO: methionine adenosyltransferase. SYN: active methionine.

Medical dictionary. 2011.

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