The Enzyme Database

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EC 1.14.20.2     
Accepted name: 2,4-dihydroxy-1,4-benzoxazin-3-one-glucoside dioxygenase
Reaction: (2R)-4-hydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl β-D-glucopyranoside + 2-oxoglutarate + O2 = (2R)-4,7-dihydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl β-D-glucopyranoside + succinate + CO2 + H2O
For diagram of benzoxazinone biosynthesis, click here
Glossary: (2R)-4-hydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl β-D-glucopyranoside = DIBOA β-D-glucoside
(2R)-4,7-dihydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl β-D-glucopyranoside = TRIBOA β-D-glucoside
Other name(s): BX6 (gene name); DIBOA-Glc dioxygenase
Systematic name: (2R)-4-hydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl β-D-glucopyranoside:oxygen oxidoreductase (7-hydroxylating)
Comments: The enzyme is involved in the biosynthesis of protective and allelophatic benzoxazinoids in some plants, most commonly from the family of Poaceae (grasses).
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Jonczyk, R., Schmidt, H., Osterrieder, A., Fiesselmann, A., Schullehner, K., Haslbeck, M., Sicker, D., Hofmann, D., Yalpani, N., Simmons, C., Frey, M. and Gierl, A. Elucidation of the final reactions of DIMBOA-glucoside biosynthesis in maize: characterization of Bx6 and Bx7. Plant Physiol. 146 (2008) 1053–1063. [PMID: 18192444]
[EC 1.14.20.2 created 2012]
 
 


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