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2. S-Adenosyl methionine - Wikipedia

   en.wikipedia.org/wiki/S-Adenosyl_methionine

   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 ]

3. Radical SAM enzymes - Wikipedia

   en.wikipedia.org/wiki/Radical_SAM_enzymes

   Radical SAM enzymes belong to a superfamily of enzymes that use an iron-sulfur cluster to reductively cleave S-adenosyl-L-methionine (SAM) to generate a radical, usually a 5′-deoxyadenosyl radical (5'-dAdo), as a critical intermediate.

4. Methionine - Wikipedia

   en.wikipedia.org/wiki/Methionine

   Methionine ball and stick model spinning. Methionine (symbol Met or M) [3] (/ m ɪ ˈ θ aɪ ə n iː n /) [4] is an essential amino acid in humans.. As the precursor of other non-essential amino acids such as cysteine and taurine, versatile compounds such as SAM-e, and the important antioxidant glutathione, methionine plays a critical role in the metabolism and health of many species ...

5. Histamine N-methyltransferase - Wikipedia

   en.wikipedia.org/wiki/Histamine_N-methyltransferase

   The conversion of SAM-e to SAH is shown by the curved arrow. [28] [17] The function of the HNMT enzyme is histamine metabolism by ways of N τ-methylation using S-adenosyl-L-methionine (SAM-e) as the methyl donor, producing N τ-methylhistamine, which, unless excreted, can be further processed by monoamine oxidase B (MAOB) or by diamine oxidase ...

6. S-Adenosylmethionine synthetase enzyme - Wikipedia

   en.wikipedia.org/wiki/S-adenosylmethionine_syn...

   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]

7. DNA methyltransferase - Wikipedia

   en.wikipedia.org/wiki/DNA_methyltransferase

   In the presence of the R subunit, the complex can also act as an endonuclease, binding to the same target sequence but cutting the DNA some distance from this site. Whether the DNA is cut or modified depends on the methylation state of the target sequence. When the target site is unmodified, the DNA is cut.