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Literature summary extracted from

  • Huang, T.S.; Anzellotti, D.; Dedaldechamp, F.; Ibrahim, R.K.
    Partial purification, kinetic analysis, and amino acid sequence information of a flavonol 3-O-methyltransferase from Serratula tinctoria (2004), Plant Physiol., 134, 1366-1376.
    View publication on PubMedView publication on EuropePMC

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.1.1.76 p-chloromercuribenzoate 1 mM, complete inhibition Serratula tinctoria

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.1.1.76 0.007
-
myricetin 30°C Serratula tinctoria
2.1.1.76 0.012
-
quercetin 30°C Serratula tinctoria
2.1.1.76 0.013
-
kaempferol 30°C Serratula tinctoria
2.1.1.76 0.045
-
S-adenosyl-L-methionine 30°C Serratula tinctoria

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
2.1.1.76 31000
-
1 * 31000, SDS-PAGE Serratula tinctoria
2.1.1.76 35000
-
gel filtration Serratula tinctoria

Organism

EC Number Organism UniProt Comment Textmining
2.1.1.76 Serratula tinctoria
-
-
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.1.1.76 partial Serratula tinctoria

Reaction

EC Number Reaction Comment Organism Reaction ID
2.1.1.76 S-adenosyl-L-methionine + 3,5,7,3',4'-pentahydroxyflavone = S-adenosyl-L-homocysteine + 3-methoxy-5,7,3',4'-tetrahydroxyflavone ordered sequential bi-bi mechanism Serratula tinctoria

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.1.1.76 leaf
-
Serratula tinctoria
-
2.1.1.76 root
-
Serratula tinctoria
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.1.1.76 13.8
-
-
Serratula tinctoria

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.1.1.76 S-adenosyl-L-methionine + galangin 60% of the activity with quercetin Serratula tinctoria S-adenosyl-L-homocysteine + ?
-
?
2.1.1.76 S-adenosyl-L-methionine + isorhamnetin 88% of the activity with quercetin Serratula tinctoria S-adenosyl-L-homocysteine + ?
-
?
2.1.1.76 S-adenosyl-L-methionine + kaempferol 93% of the activity with quercetin Serratula tinctoria S-adenosyl-L-homocysteine + 3-O-methyl-kaempferol
-
?
2.1.1.76 S-adenosyl-L-methionine + myricetin 46% of the activity with quercetin Serratula tinctoria S-adenosyl-L-homocysteine + 3-O-methyl-myricetin
-
?
2.1.1.76 S-adenosyl-L-methionine + quercetin
-
Serratula tinctoria S-adenosyl-L-homocysteine + 3-O-methyl-quercetin
-
?
2.1.1.76 S-adenosyl-L-methionine + tamarixetin 85% of the activity with quercetin Serratula tinctoria S-adenosyl-L-homocysteine + ?
-
?

Subunits

EC Number Subunits Comment Organism
2.1.1.76 monomer 1 * 31000, SDS-PAGE Serratula tinctoria

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.1.1.76 7.6
-
-
Serratula tinctoria

pI Value

EC Number Organism Comment pI Value Maximum pI Value
2.1.1.76 Serratula tinctoria chromatofocusing
-
6