2.1.1.155: kaempferol 4'-O-methyltransferase

This is an abbreviated version!
For detailed information about kaempferol 4'-O-methyltransferase, go to the full flat file.

Reaction

Synonyms

4'OMT, CrOMT6, F 4�-OMT, flavonoid methyltransferase, flavonoid O-methyltransferase, methyltransferase, flavonoid, S-adenosyl-L-methionine:flavonoid 4�-O-methyltransferase

ECTree

2 Transferases

2.1 Transferring one-carbon groups

2.1.1 Methyltransferases

2.1.1.155 kaempferol 4'-O-methyltransferase

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Results	in table
1	Activating Compound
1	CAS Registry Number
1	Cloned(Commentary)
6	Inhibitors
1	Ki Value [mM]
5	KM Value [mM]
1	Localization
1	Metals/Ions
1	Molecular Weight [Da]
1	Natural Substrates/ Products (Substrates)
2	Organism
3	Pathway
2	pH Optimum
1	pH Range
1	pH Stability
1	pI Value
2	Purification (Commentary)
2	Reaction
1	Reaction Type
2	Reference
3	Source Tissue
1	Specific Activity [micromol/min/mg]
1	Storage Stability
16	Substrates and Products (Substrate)
1	Subunits
7	Synonyms
1	Systematic Name
1	Temperature Optimum [°C]

Systematic Name

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Systematic Name on EC 2.1.1.155 - kaempferol 4'-O-methyltransferase

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S-adenosyl-L-methionine:kaempferol 4'-O-methyltransferase

The enzyme acts on the hydroxy group in the 4'-position of some flavones, flavanones and isoflavones. Kaempferol, apigenin and kaempferol triglucoside are substrates, as is genistein, which reacts more slowly. Compounds with an hydroxy group in the 3' and 4' positions, such as quercetin and eriodictyol, do not act as substrates. Similar to EC 2.1.1.75, apigenin 4'-O-methyltransferase and EC 2.1.1.83, 3,7-dimethylquercetin 4'-O-methyltransferase.