KEGG   ENZYME: 2.1.1.241Help
Entry
EC 2.1.1.241                Enzyme                                 

Name
2,4,7-trihydroxy-1,4-benzoxazin-3-one-glucoside 7-O-methyltransferase;
BX7 (gene name);
OMT BX7
Class
Transferases;
Transferring one-carbon groups;
Methyltransferases
BRITE hierarchy
Sysname
S-adenosyl-L-methionine:(2R)-4,7-dihydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside 7-O-methyltransferase
Reaction(IUBMB)
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 [RN:R08973]
Reaction(KEGG)
Substrate
S-adenosyl-L-methionine [CPD:C00019];
(2R)-4,7-dihydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside [CPD:C18062]
Product
S-adenosyl-L-homocysteine [CPD:C00021];
(2R)-4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside [CPD:C04831]
Comment
The enzyme is involved in the biosynthesis of the protective and allelophatic benzoxazinoid DIMBOA [(2R)-4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin] in some plants, most commonly from the family of Poaceae (grasses).
History
EC 2.1.1.241 created 2012
Pathway
ec00402  Benzoxazinoid biosynthesis
Orthology
K13230  2,4,7-trihydroxy-1,4-benzoxazin-3-one-glucoside 7-O-methyltransferase
Genes
ZMA: 100147731(Bx7)
Taxonomy
Reference
1  [PMID:18192444]
  Authors
Jonczyk R, Schmidt H, Osterrieder A, Fiesselmann A, Schullehner K, Haslbeck M, Sicker D, Hofmann D, Yalpani N, Simmons C, Frey M, Gierl A.
  Title
Elucidation of the final reactions of DIMBOA-glucoside biosynthesis in maize: characterization of Bx6 and Bx7.
  Journal
Plant Physiol 146:1053-63 (2008)
DOI:10.1104/pp.107.111237
  Sequence
[zma:100147731]
Other DBs
ExplorEnz - The Enzyme Database: 2.1.1.241
IUBMB Enzyme Nomenclature: 2.1.1.241
ExPASy - ENZYME nomenclature database: 2.1.1.241
BRENDA, the Enzyme Database: 2.1.1.241

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