O-methyltransferase
Encyclopedia
An O-methylated flavonoid (OMT) is a type of methyltransferase
Methyltransferase
A methyltransferase is a type of transferase enzyme that transfers a methyl group from a donor to an acceptor.Methylation often occurs on nucleic bases in DNA or amino acids in protein structures...

 enzyme transferring a methyl group on a molecule.

Examples are :
  • Acetylserotonin O-methyltransferase
    Acetylserotonin O-methyltransferase
    N-Acetylserotonin O-methyltransferase also known as ASMT is an enzyme that catalyzes the final reaction in melatonin biosynthesis, converting Normelatonin to melatonin. This reaction is embedded in the more general tryptophan metabolism pathway...

  • Apigenin 4'-O-methyltransferase
    Apigenin 4'-O-methyltransferase
    In enzymology, an apigenin 4'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 5,7,4'-trihydroxyflavone , whereas its two products are S-adenosylhomocysteine and 4'-methoxy-5,7-dihydroxyflavone .This enzyme...

  • Caffeate O-methyltransferase
    Caffeate O-methyltransferase
    In enzymology, a caffeate O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 3,4-dihydroxy-trans-cinnamate, whereas its two products are S-adenosylhomocysteine and 3-methoxy-4-hydroxy-trans-cinnamate.This...

  • Caffeoyl-CoA O-methyltransferase
    Caffeoyl-CoA O-methyltransferase
    In enzymology, a caffeoyl-CoA O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and caffeoyl-CoA, whereas its two products are S-adenosylhomocysteine and feruloyl-CoA....

  • Catechol O-methyltransferase
  • Chlorophenol O-methyltransferase
    Chlorophenol O-methyltransferase
    In enzymology, a chlorophenol O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and trichlorophenol, whereas its two products are S-adenosylhomocysteine and trichloroanisole.This enzyme belongs to the family of...

  • Columbamine O-methyltransferase
    Columbamine O-methyltransferase
    In enzymology, a columbamine O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and columbamine, whereas its two products are S-adenosylhomocysteine and palmatine....

  • Demethylmacrocin O-methyltransferase
    Demethylmacrocin O-methyltransferase
    In enzymology, a demethylmacrocin O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and demethylmacrocin, whereas its two products are S-adenosylhomocysteine and macrocin....

  • 3'-demethylstaurosporine O-methyltransferase
    3'-demethylstaurosporine O-methyltransferase
    In enzymology, a 3'-demethylstaurosporine O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 3'-demethylstaurosporine, whereas its two products are S-adenosylhomocysteine and staurosporine.This enzyme belongs...

  • Demethylsterigmatocystin 6-O-methyltransferase
    Demethylsterigmatocystin 6-O-methyltransferase
    In enzymology, a demethylsterigmatocystin 6-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 6-demethylsterigmatocystin, whereas its two products are S-adenosylhomocysteine and sterigmatocystin.This enzyme...

  • 3-demethylubiquinone-9 3-O-methyltransferase
    3-demethylubiquinone-9 3-O-methyltransferase
    In enzymology, a 3-demethylubiquinone-9 3-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 3-demethylubiquinone-9, whereas its two products are S-adenosylhomocysteine and ubiquinone-9.This enzyme belongs to...

  • 3,7-dimethylquercetin 4'-O-methyltransferase
    3,7-dimethylquercetin 4'-O-methyltransferase
    In enzymology, a 3,7-dimethylquercetin 4'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 5,3',4'-trihydroxy-3,7-dimethoxyflavone , whereas its two products are S-adenosylhomocysteine and...

  • Fatty-acid O-methyltransferase
    Fatty-acid O-methyltransferase
    In enzymology, a fatty-acid O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and fatty acid, whereas its two products are S-adenosylhomocysteine and fatty acid methyl ester.This enzyme belongs to the family of...

  • Glucuronoxylan 4-O-methyltransferase
    Glucuronoxylan 4-O-methyltransferase
    In enzymology, a glucuronoxylan 4-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and glucuronoxylan D-glucuronate, whereas its two products are S-adenosylhomocysteine and glucuronoxylan...

  • 10-hydroxydihydrosanguinarine 10-O-methyltransferase
    10-hydroxydihydrosanguinarine 10-O-methyltransferase
    In enzymology, a 10-hydroxydihydrosanguinarine 10-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 10-hydroxydihydrosanguinarine, whereas its two products are S-adenosylhomocysteine and...

  • 12-hydroxydihydrochelirubine 12-O-methyltransferase
    12-hydroxydihydrochelirubine 12-O-methyltransferase
    In enzymology, a 12-hydroxydihydrochelirubine 12-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 12-hydroxydihydrochelirubine, whereas its two products are S-adenosylhomocysteine and dihydromacarpine.This...

  • 6-hydroxymellein O-methyltransferase
    6-hydroxymellein O-methyltransferase
    In enzymology, a 6-hydroxymellein O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 6-hydroxymellein, whereas its two products are S-adenosylhomocysteine and 6-methoxymellein.This enzyme belongs to the family...

  • 3'-hydroxy-N-methyl-(S)-coclaurine 4'-O-methyltransferase
    3'-hydroxy-N-methyl-(S)-coclaurine 4'-O-methyltransferase
    In enzymology, a 3'-hydroxy-N-methyl--coclaurine 4'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 3'-hydroxy-N-methyl--coclaurine, whereas its two products are S-adenosylhomocysteine and -reticuline.This...

  • 8-hydroxyquercetin 8-O-methyltransferase
    8-hydroxyquercetin 8-O-methyltransferase
    In enzymology, a 8-hydroxyquercetin 8-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 3,5,7,8,3',4'-hexahydroxyflavone , whereas its two products are S-adenosylhomocysteine and...

  • Iodophenol O-methyltransferase
    Iodophenol O-methyltransferase
    In enzymology, an iodophenol O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 2-iodophenol, whereas its two products are S-adenosylhomocysteine and 2-iodophenol methyl ether.This enzyme belongs to the family...

  • Isobutyraldoxime O-methyltransferase
    Isobutyraldoxime O-methyltransferase
    In enzymology, an isobutyraldoxime O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 2-methylpropanal oxime, whereas its two products are S-adenosylhomocysteine and 2-methylpropanal O-methyloxime.This enzyme...

  • (iso)eugenol O-methyltransferase
    (iso)eugenol O-methyltransferase
    In enzymology, a eugenol O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and isoeugenol, whereas its two products are S-adenosylhomocysteine and isomethyleugenol....

  • Isoflavone 4'-O-methyltransferase
    Isoflavone 4'-O-methyltransferase
    In enzymology, an isoflavone 4'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and isoflavone, whereas its two products are S-adenosylhomocysteine and 4'-O-methylisoflavone.This enzyme belongs to the family of...

  • Isoflavone 7-O-methyltransferase
    Isoflavone 7-O-methyltransferase
    In enzymology, an isoflavone 7-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 7-hydroxyisoflavone, whereas its two products are S-adenosylhomocysteine and 7-methoxyisoflavone.This enzyme belongs to the...

  • Isoliquiritigenin 2'-O-methyltransferase
    Isoliquiritigenin 2'-O-methyltransferase
    In enzymology, an isoliquiritigenin 2'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and isoliquiritigenin, whereas its two products are S-adenosylhomocysteine and 2'-O-methylisoliquiritigenin.This enzyme...

  • Isoorientin 3'-O-methyltransferase
    Isoorientin 3'-O-methyltransferase
    In enzymology, an isoorientin 3'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and isoorientin, whereas its two products are S-adenosylhomocysteine and isoscoparin....

  • Jasmonate O-methyltransferase
    Jasmonate O-methyltransferase
    In enzymology, a jasmonate O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and jasmonate, whereas its two products are S-adenosylhomocysteine and methyl jasmonate....

  • Protein-L-isoaspartate(D-aspartate) O-methyltransferase
  • Kaempferol 4'-O-methyltransferase
    Kaempferol 4'-O-methyltransferase
    In enzymology, a kaempferol 4'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and kaempferol, whereas its two products are S-adenosylhomocysteine and kaempferide....

  • Licodione 2'-O-methyltransferase
    Licodione 2'-O-methyltransferase
    In enzymology, a licodione 2'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and licodione, whereas its two products are S-adenosylhomocysteine and 2'-O-methyllicodione....

  • Loganate O-methyltransferase
    Loganate O-methyltransferase
    In enzymology, a loganate O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and loganate, whereas its two products are S-adenosylhomocysteine and loganin....

  • Luteolin O-methyltransferase
    Luteolin O-methyltransferase
    In enzymology, a luteolin O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 5,7,3',4'-tetrahydroxyflavone , whereas its two products are S-adenosylhomocysteine and 5,7,4'-trihydroxy-3'-methoxyflavone.This...

  • Macrocin O-methyltransferase
    Macrocin O-methyltransferase
    In enzymology, a macrocin O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and macrocin, whereas its two products are S-adenosylhomocysteine and tylosin....

  • Methylquercetagetin 6-O-methyltransferase
    Methylquercetagetin 6-O-methyltransferase
    In enzymology, a methylquercetagetin 6-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 5,6,3',4'-tetrahydroxy-3,7-dimethoxyflavone, whereas its two products are S-adenosylhomocysteine and...

  • 3-methylquercetin 7-O-methyltransferase
    3-methylquercetin 7-O-methyltransferase
    In enzymology, a 3-methylquercetin 7-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 5,7,3',4'-tetrahydroxy-3-methoxyflavone , whereas its two products are S-adenosylhomocysteine and...

  • mRNA (nucleoside-2'-O-)-methyltransferase
    MRNA (nucleoside-2'-O-)-methyltransferase
    In enzymology, a mRNA -methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and m7GpppR-RNA, whereas its two products are S-adenosylhomocysteine and m7GpppRm-RNA .This enzyme belongs to the family of transferases,...

  • Myricetin O-methyltransferase
    Myricetin O-methyltransferase
    In enzymology, a myricetin O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and myricetin, whereas its two products are S-adenosylhomocysteine and syringetin....

  • N-benzoyl-4-hydroxyanthranilate 4-O-methyltransferase
    N-benzoyl-4-hydroxyanthranilate 4-O-methyltransferase
    In enzymology, a N-benzoyl-4-hydroxyanthranilate 4-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and N-benzoyl-4-hydroxyanthranilate, whereas its two products are S-adenosylhomocysteine and...

  • O-demethylpuromycin O-methyltransferase
    O-demethylpuromycin O-methyltransferase
    In enzymology, an O-demethylpuromycin O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and O-demethylpuromycin, whereas its two products are S-adenosylhomocysteine and puromycin.This enzyme belongs to the family...

  • 6-O-methylnorlaudanosoline 5'-O-methyltransferase
    6-O-methylnorlaudanosoline 5'-O-methyltransferase
    In enzymology, a 6-O-methylnorlaudanosoline 5'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 6-O-methylnorlaudanosoline, whereas its two products are S-adenosylhomocysteine and nororientaline.This enzyme...

  • Phenol O-methyltransferase
    Phenol O-methyltransferase
    In enzymology, a phenol O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and phenol, whereas its two products are S-adenosylhomocysteine and anisole....

  • Polysaccharide O-methyltransferase
    Polysaccharide O-methyltransferase
    In enzymology, a polysaccharide O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 1,4-alpha-D-glucooligosaccharide, whereas its two products are S-adenosylhomocysteine and oligosaccharide containing...

  • Protein-glutamate O-methyltransferase
    Protein-glutamate O-methyltransferase
    In enzymology, a protein-glutamate O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and protein L-glutamic acid, whereas its two products are S-adenosylhomocysteine and protein L-glutamate methyl ester.This...

  • Protein-S-isoprenylcysteine O-methyltransferase
    Protein-S-isoprenylcysteine O-methyltransferase
    In enzymology, a protein-S-isoprenylcysteine O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and protein C-terminal S-farnesyl-L-cysteine, whereas its two products are S-adenosylhomocysteine and protein...

  • Quercetin 3-O-methyltransferase
    Quercetin 3-O-methyltransferase
    In enzymology, a quercetin 3-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 3,5,7,3',4'-pentahydroxyflavone, whereas its two products are S-adenosylhomocysteine and...

  • rRNA (adenosine-2'-O-)-methyltransferase
    RRNA (adenosine-2'-O-)-methyltransferase
    In enzymology, a rRNA -methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and rRNA, whereas its two products are S-adenosylhomocysteine and rRNA containing a single residue of 2'-O-methyladenosine.This enzyme belongs...

  • (RS)-norcoclaurine 6-O-methyltransferase
    (RS)-norcoclaurine 6-O-methyltransferase
    In enzymology, a -norcoclaurine 6-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and -norcoclaurine, whereas its two products are S-adenosylhomocysteine and -coclaurine.This enzyme belongs to the family of...

  • (S)-scoulerine 9-O-methyltransferase
    (S)-scoulerine 9-O-methyltransferase
    In enzymology, a -scoulerine 9-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and -scoulerine, whereas its two products are S-adenosylhomocysteine and -tetrahydrocolumbamine.This enzyme belongs to the family of...

  • Sterigmatocystin 8-O-methyltransferase
    Sterigmatocystin 8-O-methyltransferase
    In enzymology, a sterigmatocystin 8-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and sterigmatocystin, whereas its two products are S-adenosylhomocysteine and 8-O-methylsterigmatocystin.This enzyme belongs to...

  • Tabersonine 16-O-methyltransferase
    Tabersonine 16-O-methyltransferase
    In enzymology, a tabersonine 16-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 16-hydroxytabersonine, whereas its two products are S-adenosylhomocysteine and 16-methoxytabersonine.This enzyme belongs to the...

  • Tetrahydrocolumbamine 2-O-methyltransferase
    Tetrahydrocolumbamine 2-O-methyltransferase
    In enzymology, a tetrahydrocolumbamine 2-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and 5,8,13,13a-tetrahydrocolumbamine, whereas its two products are S-adenosylhomocysteine and tetrahydropalmatine.This...

  • Tocopherol O-methyltransferase
    Tocopherol O-methyltransferase
    In enzymology, a tocopherol O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and gamma-tocopherol, whereas its two products are S-adenosylhomocysteine and alpha-tocopherol....

  • tRNA guanosine-2'-O-methyltransferase
    TRNA guanosine-2'-O-methyltransferase
    In enzymology, a tRNA guanosine-2'-O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and tRNA, whereas its two products are S-adenosylhomocysteine and tRNA containing 2'-O-methylguanosine.This enzyme belongs to...

  • Vitexin 2"-O-rhamnoside 7-O-methyltransferase
  • Xanthotoxol O-methyltransferase
    Xanthotoxol O-methyltransferase
    In enzymology, a xanthotoxol O-methyltransferase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are S-adenosyl methionine and xanthotoxol, whereas its two products are S-adenosylhomocysteine and O-methylxanthotoxol....

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