Thetin—homocysteine S-methyltransferase

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thetin-homocysteine S-methyltransferase
Identifiers
EC no. 2.1.1.3
CAS no. 9029-76-9
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In enzymology, a thetin-homocysteine S-methyltransferase (EC 2.1.1.3) is an enzyme that catalyzes the chemical reaction

dimethylsulfonioacetate + L-homocysteine S-methylthioglycolate + L-methionine

Thus, the two substrates of this enzyme are dimethylsulfonioacetic acid and L-homocysteine, whereas its two products are S-methylthioglycolic acid and L-methionine.

This enzyme belongs to the family of transferases, specifically those transferring one-carbon group methyltransferases. The systematic name of this enzyme class is dimethylsulfonioacetic acid:L-homocysteine S-methyltransferase. Other names in common use include dimethylthetin-homocysteine methyltransferase, and thetin-homocysteine methylpherase.

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References


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