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2.1.1.241: 2,4,7-trihydroxy-1,4-benzoxazin-3-one-glucoside 7-O-methyltransferase

This is an abbreviated version!
For detailed information about 2,4,7-trihydroxy-1,4-benzoxazin-3-one-glucoside 7-O-methyltransferase, go to the full flat file.

Reaction

S-adenosyl-L-methionine
+
(2R)-4,7-dihydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside
=
S-adenosyl-L-homocysteine
+
(2R)-4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside

Synonyms

BENZOXAZINLESS7, BX7, O-methyltransferase BX7, OMT BX7, TRIBOA-glucoside O-methyltransferase, TRIBOA-OMT

ECTree

     2 Transferases
         2.1 Transferring one-carbon groups
             2.1.1 Methyltransferases
                2.1.1.241 2,4,7-trihydroxy-1,4-benzoxazin-3-one-glucoside 7-O-methyltransferase

Substrates Products

Substrates Products on EC 2.1.1.241 - 2,4,7-trihydroxy-1,4-benzoxazin-3-one-glucoside 7-O-methyltransferase

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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
S-adenosyl-L-methionine + (2R)-4,7-dihydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside
S-adenosyl-L-homocysteine + (2R)-4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside
show the reaction diagram
S-adenosyl-L-methionine + 2-(2,4,7-trihydroxy-8-methoxy-1,4-benzoxazin-3-one)-beta-D-glucopyranose
S-adenosyl-L-homocysteine + 2-(2,4-dihydroxy-7,8-dimethoxy-1,4-benzoxazin-3-one)-beta-D-glucopyranose
show the reaction diagram
additional information
?
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-
the only substance that serves as a substrate for the recombinant Bx7 is TRIBOA-Glc, neither the aglucone TRIBOA nor well-known substrates of plant O-methyltransferases are efficiently converted by the enzyme. In case of quercetin, a minor activity is detected. BX7 has no catalytic activity toward phenylpropanoids and flavonoids, e.g. apigenin is no substrate
-
-
?