Any feedback?
Please rate this page
(literature.php)
(0/150)

BRENDA support

Literature summary for 2.1.1.82 extracted from

  • De Luca, V.; Ibrahim, R.K.
    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 (1985), Arch. Biochem. Biophys., 238, 596-605.
    View publication on PubMed

General Stability

General Stability Organism
loss of activity during chromatofocusing Chrysosplenium americanum

Inhibitors

Inhibitors Comment Organism Structure
N-ethylmaleimide
-
Chrysosplenium americanum
p-chloromercuribenzoate
-
Chrysosplenium americanum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
57000
-
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',4',5,7-tetrahydroxy-3-methoxyflavone Chrysosplenium americanum involved with EC 2.1.1.76 and 2.1.1.83 in the methylation of quercetin S-adenosyl-L-homocysteine + 3',4',5-trihydroxy-3,7-dimethoxyflavone trivial name 3,7-dimethylquercetin ?

Organism

Organism UniProt Comment Textmining
Chrysosplenium americanum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
loss of activity during chromatofocusing possibly due to instability of the enzyme in the purified form or to the loss of some factors required for activity Chrysosplenium americanum

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Chrysosplenium americanum
-

Storage Stability

Storage Stability Organism
-15°C, 200 mM potassium phosphate buffer, pH 8, 20% v/v glycerol, 5 mM dithiothreitol, several months, no loss of activity Chrysosplenium americanum
4°C, 4-6 weeks, 80% loss of activity Chrysosplenium americanum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
S-adenosyl-L-methionine + 3',4',5,7-tetrahydroxy-3-methoxyflavone trivial name 3-methylquercetin, specific for 3-methylquercetin Chrysosplenium americanum S-adenosyl-L-homocysteine + 3',4',5-trihydroxy-3,7-dimethoxyflavone trivial name 3,7-dimethylquercetin ?
S-adenosyl-L-methionine + 3',4',5,7-tetrahydroxy-3-methoxyflavone involved with EC 2.1.1.76 and 2.1.1.83 in the methylation of quercetin Chrysosplenium americanum S-adenosyl-L-homocysteine + 3',4',5-trihydroxy-3,7-dimethoxyflavone trivial name 3,7-dimethylquercetin ?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.8 8.2
-
Chrysosplenium americanum

pH Range

pH Minimum pH Maximum Comment Organism
7.2 9.5 approx. 50% of maximal activity at pH 7.2 and 9.5 Chrysosplenium americanum