| m(5)C rRNA methyltransferase | <enzyme> 16s rrna-specific methyltransferase; forms m(5)c967; uses free rrna but not 30s subunits as substrate Registry number: EC 2.1.1.- Synonym: m5c methyltransferase, m(5)c methyltransferase (26 Jun 1999) |
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| gamma-tocopherol methyltransferase | <enzyme> Forms alpha-tocopherol; enzyme nomenclature name of tocopherol o-methyltransferase is incorrect, since there are no -och3 groups in the product Registry number: EC 2.1.1.95 Synonym: gtc methyltransferase (26 Jun 1999) |
| magnesium-protoporphyrin methyltransferase | <enzyme> From photosynthetic tissue; catalyses the methylation of magnesium protoporphyrin in the presence of s-adenosyl-l-methionine to yield magnesium protoporphyrin monomethyl ester and s-adenosyl-l-homocysteine Registry number: EC 2.1.1.11 Synonym: s-adenosyl-l-methionine-magnesium protoporphyrin methyltransferase, mg-pp-methyltransferase, s-adenosyl-l-methionine-mg-protoporphyrin ix methyltransferase, bchm gene product (26 Jun 1999) |
| catechol o-methyltransferase | <enzyme> An enzyme of the transferase class that catalyses the transfer of a methyl group from s-adenosylmethionine to a catechol or catecholamine such as dopa, dopamine, norepinephrine, or epinephrine. (converting to normetanephrine and metanephrine, respectively), the methyl group coming from S-adenosyl-l-methionine. An important step in the catabolism of the catecholamines. The enzyme occurs in the cytoplasm, particularly in the kidney, liver, and central nervous system. Chemical name: S-Adenosyl-L-methionine:catechol O-methyltransferase Registry number: EC 2.1.1.6 (05 May 2002) |
| glycine methyltransferase | <enzyme> Liver protein sediments in the 4-s region of sucrose gradients; binds to benzo(a)pyrene and to folate Registry number: EC 2.1.1.20 Synonym: glycine n-methyltransferase, carcinogen-binding protein, 4s carcinogen-binding protein, 4-s carcinogen-binding protein, 4s polycylic aromatic hydrocarbon-binding protein, 4s pah-binding protein, pah-binding protein (26 Jun 1999) |
| chemotaxis methyltransferase | <enzyme> Methylates methyl-accepting chemotaxis proteins when added to permeability cells; see also record for methyl-accepting chemotaxis proteins Registry number: EC 2.1.1.- Synonym: chemotaxis methyltransferase II, cher protein, frzf gene product (26 Jun 1999) |
| ribulose-1,5-bisphosphate carboxylase-oxygenase large subunit epsilonN-methyltransferase | <enzyme> An aspect of EC 2.1.1.43; trimethylates lys-14 of rubisco Registry number: EC 2.1.1.- Synonym: rubisco lsmt, rubisco large subunit lysine n-methyltransferase (26 Jun 1999) |
| RNA 2'-O-methyltransferase | <enzyme> Methylates 2'-hydroxyl group of ribose moieties of ribosomal RNA; highest activity poly (c) is a synthetic substrate Registry number: EC 2.1.1.- Synonym: nucleolar 2'-o-methyltransferase (26 Jun 1999) |
| PET56 methyltransferase | <enzyme> Catalyses the site-specific formation of 2'-o-methylguanosine on in vitro transcripts of both mitochondrial 21s rrna and e. Coli 23s rrna Registry number: EC 2.1.1.- Synonym: pet56 protein, pet56 methylase, pet56 nuclear gene product (26 Jun 1999) |
| guanidinoacetate methyltransferase | The enzyme catalyzing the transfer of a methyl group from S-adenosyl-l-methionine ("active methionine") to guanidinoacetate (glycocyamine), forming creatine and S-adenosyl-l-homocysteine. (05 Mar 2000) |
| methanol-2-mercaptoethanesulfonic acid methyltransferase | <enzyme> Catalyses first reaction in conversion of methanol to methane by methanosarcina barkeri; 24-kD subunit mtac and 49-kD subunit mtab of mt1 corrinoid protein have been sequenced; genbank y08310 Registry number: EC 2.1.1.- Synonym: methanol-coenzyme m methyltransferase, methanol-com methyltransferase, corrinoid protein mt1, mtab gene product, mtac gene product (26 Jun 1999) |
| methionine S-methyltransferase | <enzyme> Catalyses synthesis of s-methylmethionine from l-methionine and s-adenosylmethionine Registry number: EC 2.1.1.12 Synonym: s-adenosyl-l-methionine - l-methionine s-methyltransferase (26 Jun 1999) |
| methylcobamide-coenzyme M methyltransferase | <enzyme> Catalyses transfer of methyl group from methylcob(iii)amide to coenzyme m Registry number: EC 2.1.1.- Synonym: mt2-m enzyme, mt2-a enzyme (26 Jun 1999) |
| methylphosphotriester methyltransferase | <enzyme> Acts as DNA repair mechanism to remove methyl groups introduced into the DNA molecule by alkylating agents Registry number: EC 2.1.1.- Synonym: mpester methyltransferase, methylphosphotriester DNA methyltransferase, alkylphosphotriester DNA alkyl transferase (26 Jun 1999) |
| methyltransferase | <enzyme> That transfers a methyl group from S adenosyl methionine to a substrate. most commonly encountered in bacterial chemotaxis where the methyl accepting chemotaxis proteins (MCPs) become methylated in the course of adaptation. (18 Nov 1997) |