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Literature summary for 2.1.1.76 extracted from
- Polymethylated flavonol synthesis is catalysed by distinct O-methyltranferases (1982), Naturwissenschaften, 69, 41-42.
No PubMed abstract available
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.0014 | - |
quercetin | - |
Chrysosplenium americanum |  |
| 0.07 | - |
S-adenosyl-L-methionine | - |
Chrysosplenium americanum | |
Metals/Ions
| Metals/Ions | Comment | Organism | Structure |
|---|---|---|---|
| Mg2+ | required for activity | Chrysosplenium americanum | |
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 65000 | - |
gel filtration | Chrysosplenium americanum |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| S-adenosyl-L-methionine + 3,5,7,3',4'-pentahydroxyflavone | Chrysosplenium americanum | involved in metabolism of secondary plant products, especially formation of lignin and detoxification of flavonoids | S-adenosyl-L-homocysteine + 3-methoxy-5,7,3',4'-tetrahydroxyflavone | 3-O-methylquercetin | ? | |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Chrysosplenium americanum | - |
- |
- |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| partially | Chrysosplenium americanum |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| S-adenosyl-L-methionine + 3,5,7,3',4'-pentahydroxyflavone | - |
Chrysosplenium americanum | S-adenosyl-L-homocysteine + 3-methoxy-5,7,3',4'-tetrahydroxyflavone | - |
? | |
| S-adenosyl-L-methionine + 3,5,7,3',4'-pentahydroxyflavone | involved in metabolism of secondary plant products, especially formation of lignin and detoxification of flavonoids | Chrysosplenium americanum | S-adenosyl-L-homocysteine + 3-methoxy-5,7,3',4'-tetrahydroxyflavone | 3-O-methylquercetin | ? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| S-adenosyl-L-methionine:quercetin 3-O-methyltransferase | - |
Chrysosplenium americanum |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 7.5 | 8.5 | - |
Chrysosplenium americanum |
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Release 2023.1 (January 2023)
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