EC Number   |
Substrates |
Organism |
Products  |
Reversibility |
|---|
   2.1.1.42 | luteolin + S-adenosyl-L-methionine |
high 3'-O-methyltransferase activity |
Glycine max |
3'-O-methyl luteolin + S-adenosyl-L-homocysteine |
i.e. chrysoeriol |
? |
| 2.1.1.42 | taxifolin + S-adenosyl-L-methionine |
3'-O-methyltransferase activity |
Glycine max |
3'-O-methyl taxifolin + S-adenosyl-L-homocysteine |
- |
? |
| 2.1.1.42 | luteolin + S-adenosyl-L-methionine |
OMT-15 shows 92% activity and OMT-17 shows 84% activity compared to myricetin |
Oryza sativa |
3'-O-methylluteolin + S-adenosyl-L-homocysteine |
- |
? |
| 2.1.1.42 | quercetin + S-adenosyl-L-methionine |
SOMT-9 is involved in the biosynthesis of isorhamnetin |
Glycine max |
3'-O-methylquercetin + S-adenosyl-L-homocysteine |
- |
? |
| 2.1.1.42 | quercetin + S-adenosyl-L-methionine |
a flavone, 3'-O-methyltransferase activity, best substrate |
Glycine max |
3'-O-methylquercetin + S-adenosyl-L-homocysteine |
i.e. isorhamnetin |
? |
| 2.1.1.42 | 4 S-adenosyl-L-methionine + quercetin |
- |
Citrus depressa |
4 S-adenosyl-L-homocysteine + 3,3',5,7-tetra-O-methyl-quercetin |
- |
? |
| 2.1.1.42 | more |
- |
Petroselinum crispum |
? |
- |
? |
| 2.1.1.42 | more |
isomeric substances isoferulic acid and diosmetin, chrysoeriol, apigenin p-cumaric acid and ferulic acid are not substrates |
Petroselinum crispum |
? |
- |
? |
| 2.1.1.42 | more |
only ortho-dihydric phenols can function as substrates and only the meta-hydroxyl group is methylated, no reaction takes place if one of the two phenolic hydroxyls is methylated or if only one hydroxyl group is present |
Petroselinum crispum |
? |
- |
? |
| 2.1.1.42 | more |
rutin is no substrate |
Nicotiana tabacum |
? |
- |
? |
