Noun
English Wikipedia has an article on:methyltransferaseWikipedia
methyltransferase (plural methyltransferases)
(biochemistry) Any enzyme that catalyzes transmethylation
Homocysteine can also be remethylated using glycine betaine (NNN-trimethyl glycine, TMG) to methionine via the enzyme betaine-homocysteine methyltransferase (E. Source: Internet
These reactions are important because a defect in homocysteine methyltransferase or a deficiency of B 12 may lead to a so-called "methyl-trap" of THF, in which THF converts to a reservoir of methyl-THF. Source: Internet
HaeIII methyltransferase convalently complexed to DNA HaeIII methyltransferase (right) binds to DNA where it methylates (adds a methy group to) it. Source: Internet
It has been shown that the histone lysine methyltransferase (KMT) is responsible for this methylation activity in the pattern of histones H3 & H4. Source: Internet
SAM serves as a methyl-donor in many (2) methyltransferase reactions, and is converted to S-adenosylhomocysteine (SAH). Source: Internet
The Mod subunit recognises the DNA sequence specific for the system and is a modification methyltransferase ; as such, it is functionally equivalent to the M and S subunits of type I restriction endonuclease. Source: Internet