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Literature summary for 2.1.1.68 extracted from

  • Bhuiya, M.W.; Liu, C.J.
    A cost-effective colorimetric assay for phenolic O-methyltransferases and characterization of caffeate 3-O-methyltransferases from Populus trichocarpa (2009), Anal. Biochem., 384, 151-158.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed in Escherichia coli BL21(DE3) cells Populus trichocarpa

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.01013
-
3,4-dihydroxy-trans-cinnamate isoform COMT2, in 50 mM Tris-HCl, pH 7.5, at 30°C Populus trichocarpa
0.02874
-
3,4-dihydroxy-trans-cinnamate isoform COMT1, in 50 mM Tris-HCl, pH 7.5, at 30°C Populus trichocarpa

Organism

Organism UniProt Comment Textmining
Populus trichocarpa A9P830 black cottonwood
-
Populus trichocarpa C6FFB6 black cottonwood
-

Purification (Commentary)

Purification (Comment) Organism
Ni2+-agarose affinity column chromatography, gel filtration Populus trichocarpa

Source Tissue

Source Tissue Comment Organism Textmining
stem
-
Populus trichocarpa
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
S-adenosyl-L-methionine + 3,4-dihydroxy-trans-cinnamate
-
Populus trichocarpa S-adenosyl-L-homocysteine + 3-methoxy-4-hydroxy-trans-cinnamate
-
?
S-adenosyl-L-methionine + 5-hydroxyferulic acid
-
Populus trichocarpa S-adenosyl-L-homocysteine + sinapic acid
-
?

Synonyms

Synonyms Comment Organism
caffeate 3-O-methyltransferase
-
Populus trichocarpa
caffeate/5-hydroxyferulate 3/5-O-methyltransferase
-
Populus trichocarpa
COMT1 isoform Populus trichocarpa
COMT2 isoform Populus trichocarpa