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S-Adenosyl methionine (SAM), also known under the commercial names of SAMe, SAM-e, or AdoMet, is a common cosubstrate involved in methyl group transfers, transsulfuration, and aminopropylation. Although these anabolic reactions occur throughout the body, most SAM is produced and consumed in the liver. [ 1 ]
S-Adenosylmethionine synthetase (EC 2.5.1.6), also known as methionine adenosyltransferase (MAT), is an enzyme that creates S-adenosylmethionine (also known as AdoMet, SAM or SAMe) by reacting methionine (a non-polar amino acid) and ATP (the basic currency of energy). [1]
The systematic name of this enzyme class is S-adenosyl-L-methionine:1D-myo-inositol 4-methyltransferase. Other names in common use include myo-inositol 4-O-methyltransferase , S-adenosyl-L-methionine:myo-inositol 4-O-methyltransferase , and myo-inositol 6-O-methyltransferase .
The systematic name of this enzyme class is S-adenosyl-L-methionine:tRNA (5-methylaminomethyl-2-thio-uridylate)-methyltransferase. Other names in common use include transfer ribonucleate 5-methylaminomethyl-2-thiouridylate, 5-methyltransferase, and tRNA 5-methylaminomethyl-2-thiouridylate 5'-methyltransferase.
Radical S-adenosylmethionine enzymes, otherwise known as radical SAM enzymes, are metalloproteins that cleave S-adenosyl-L-methionine into L-methionine and a 5'-deoxyadenosyl 5'-radical (5'-dA). [ 3 ] 5'-dA is an intermediate in the reactions catalyzed by radical SAMs. 5'-dA removes a hydrogen from the substrate and allows for the addition of ...
S-adenosylmethionine-dependent methyltransferase (SAM-MTase or AdoMet-MTase) is a conserved protein domain and protein superfamily. [1] SAM-MTase proteins are methyltransferases. [2] There are five protein families within SAM-MTase, SAM-MTases use S-adenosyl-L-methionine as a substrate for methylation, creating the product S-adenosyl-L ...
S-adenosyl methionine (SAM) is the precursor to 5′-methylthioadenosine. The pervasive cofactor S-adenosyl methionine (SAM) is the precursor to 5′-methylthioadenosine. The sulfonium group in SAM can cleave in three ways, one involves loss of CH 2 CH 2 CH(NH 3 +)CO 2 −, generating the title compound.
In enzymology, a fatty-acid O-methyltransferase (EC 2.1.1.15) is an enzyme that catalyzes the chemical reaction. S-adenosyl-L-methionine + a fatty acid S-adenosyl-L-homocysteine + a fatty acid methyl ester
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