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

Class of enzymes

Class of enzymes

FieldValue
Name2,4,7-trihydroxy-1,4-benzoxazin-3-one-glucoside 7-O-methyltransferase
EC_number2.1.1.241

2,4,7-trihydroxy-1,4-benzoxazin-3-one-glucoside 7-O-methyltransferase (, BX7 (gene), OMT BX7) is an enzyme with systematic name S*-adenosyl-L-methionine:(2R)-4,7-dihydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl β-D-glucopyranoside 7-O-methyltransferase*. This enzyme catalyses the following chemical reaction

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

The enzyme is involved in the biosynthesis of the protective and allelopathic benzoxazinoid DIMBOA, e.g. from the family Poaceae (grasses).

References

References

  1. (March 2008). "Elucidation of the final reactions of DIMBOA-glucoside biosynthesis in maize: characterization of Bx6 and Bx7". Plant Physiology.
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ec-2.1.1
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