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Literature summary for 2.1.1.68 extracted from

  • Ma, Q.; Xu, Y.
    Characterization of a caffeic acid 3-O-methyltransferase from wheat and its function in lignin biosynthesis (2008), Biochimie, 90, 515-524.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed in Escherichia coli BL21 cells and in Nicotiana tabacum cultivar Wisconsin 38 Triticum aestivum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.01731
-
5-hydroxyconiferaldehyde
-
Triticum aestivum
0.04372
-
caffeoyl aldehyde
-
Triticum aestivum
0.06875
-
3,4-dihydroxy-trans-cinnamate
-
Triticum aestivum
0.08403
-
caffeoyl alcohol
-
Triticum aestivum
0.1002
-
5-hydroxyconiferyl alcohol
-
Triticum aestivum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
40000
-
SDS-PAGE Triticum aestivum

Organism

Organism UniProt Comment Textmining
Triticum aestivum Q38J50 cultivar H4564
-

Purification (Commentary)

Purification (Comment) Organism
Ni-NTA column chromatography Triticum aestivum

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Triticum aestivum
-
root
-
Triticum aestivum
-
stem
-
Triticum aestivum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information the enzyme exhibits also a strong activity towards ester precursors including caffeoyl-CoA and 5-hydroxyferuloyl-CoA Triticum aestivum ?
-
?
S-adenosyl-L-methionine + 3,4-dihydroxy-trans-cinnamate
-
Triticum aestivum S-adenosyl-L-homocysteine + 3-methoxy-4-hydroxy-trans-cinnamate
-
?
S-adenosyl-L-methionine + 5-hydroxyconiferaldehyde exhibits the highest catalyzing efficiency towards 5-hydroxyconiferaldehyde Triticum aestivum S-adenosyl-L-homocysteine + 5-methoxyconiferaldehyde
-
?
S-adenosyl-L-methionine + 5-hydroxyconiferyl alcohol
-
Triticum aestivum S-adenosyl-L-homocysteine + 5-hydroxy-3-methoxyconiferyl alcohol
-
?
S-adenosyl-L-methionine + caffeoyl alcohol
-
Triticum aestivum S-adenosyl-L-homocysteine + 4-[(1E)-3-hydroxyprop-1-en-1-yl]-2-methoxyphenol
-
?
S-adenosyl-L-methionine + caffeoyl aldehyde exhibits the highest catalyzing efficiency towards caffeoyl aldehyde Triticum aestivum S-adenosyl-L-homocysteine + coniferyl aldehyde
-
?

Synonyms

Synonyms Comment Organism
caffeic acid 3-O-methyltransferase
-
Triticum aestivum
COMT
-
Triticum aestivum

kcat/KM [mM/s]

kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
0.0011
-
5-hydroxyconiferyl alcohol
-
Triticum aestivum
0.0014
-
3,4-dihydroxy-trans-cinnamate
-
Triticum aestivum
0.0017
-
caffeoyl alcohol
-
Triticum aestivum
0.0024
-
caffeoyl aldehyde
-
Triticum aestivum
0.0037
-
5-hydroxyconiferaldehyde
-
Triticum aestivum