2,4-Dihydroxy-1,4-benzoxazin-3-one-glucoside dioxygenase

2,4-dihydroxy-1,4-benzoxazin-3-one-glucoside dioxygenase
Identifiers
EC number	1.14.20.2
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

2,4-dihydroxy-1,4-benzoxazin-3-one-glucoside dioxygenase (EC 1.14.20.2, BX6 (gene), DIBOA-Glc dioxygenase) is an enzyme with systematic name (2R)-4-hydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside:oxygen oxidoreductase (7-hydroxylating).^[1] This enzyme catalyses the following chemical reaction

(2R)-4-hydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside + 2-oxoglutarate + O₂ $\rightleftharpoons$ (2R)-4,7-dihydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside + succinate + CO₂ + H₂O

The enzyme is involved in the biosynthesis of protective and allelophatic benzoxazinoids in some plants.

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. (2008). "Elucidation of the final reactions of DIMBOA-glucoside biosynthesis in maize: characterization of Bx6 and Bx7". Plant Physiol. 146 (3): 1053–1063. doi:10.1104/pp.107.111237. PMC 2259038. PMID 18192444.

External links

• 2,4-dihydroxy-1,4-benzoxazin-3-one-glucoside dioxygenase at the US National Library of Medicine Medical Subject Headings (MeSH)