3-methylquercetin 7-O-methyltransferase

In enzymology, a 3-methylquercetin 7-O-methyltransferase (EC 2.1.1.82) is an enzyme that catalyzes the chemical reaction

Thus, the two substrates of this enzyme are S-adenosyl methionine and 5,7,3',4'-tetrahydroxy-3-methoxyflavone (isorhamnetin), whereas its two products are S-adenosylhomocysteine and 5,3',4'-trihydroxy-3,7-dimethoxyflavone (rhamnazin).

This enzyme belongs to the family of transferases, specifically those transferring one-carbon group methyltransferases. The systematic name of this enzyme class is S-adenosyl-L-methionine:5,7,3',4'-tetrahydroxy-3-methoxyflavone 7-O-methyltransferase. Other names in common use include flavonol 7-O-methyltransferase, flavonol 7-methyltransferase, 7-OMT, S-adenosyl-L-methionine:3',4',5,7-tetrahydroxy-3-methoxyflavone, 7-O-methyltransferase, and 3-methylquercitin 7-O-methyltransferase [mis-spelt].

The enzyme can be found in Chrysosplenium americanum (American Golden Saxifrage).

References

  • De Luca V, Ibrahim RK (1985). "Enzymatic synthesis of polymethylated flavonols in Chrysosplenium americanum. I. Partial purification and some properties of S-adenosyl-L-methionine:flavonol 3-, 6-, 7-, and 4'-O-methyltransferases". Arch. Biochem. Biophys. 238 (2): 596605. doi:10.1016/0003-9861(85)90205-X. PMID 3994393. 
  • OMT

    OMT may refer to:

    In economics:

  • Outright Monetary Transactions, which denotes the European Central Bank's purchases of bonds issued by Eurozone member-states
  • In science:

  • O-methyltransferase, type of methyltransferase enzyme transferring a methyl group on a molecule
  • Osteopathic manipulative treatment, hands-on application of manipulative techniques on the patient by a Doctor of Osteopathic Medicine
  • Ocular tremor, also ocular microtremor, type of eye tremor
  • In technology:

  • OMT-G, configuration in object-based spatial databases
  • Object-modeling technique, language for software modeling and designing
  • Object model template, architecture for distributed computer simulation systems
  • Open microchip technology, the technology of implanting microchips in animals for research or tracking
  • Orthomode transducer, also polarisation duplexer, microwave duct component of the class of microwave circulators
  • Podcasts:

    PLAYLIST TIME:

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    I?ll never, no, no
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    All around my body




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