Biology:2,4-Dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one 2 -D-glucosyltransferase
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Short description: Class of enzymes
| 2,4-Dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one 2-D-glucosyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 2.4.1.202 | ||||||||
| CAS number | 122544-56-3 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
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2,4-Dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one 2-D-glucosyltransferase (EC 2.4.1.202, uridine diphosphoglucose-2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one 2-glucosyltransferase, BX8, BX9, benzoxazinoid glucosyltransferase, DIMBOA glucosyltransferase) is an enzyme with systematic name UDP-alpha-D-glucose:2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one 2-beta-D-glucosyltransferase.[1][2] This enzyme catalyses the following chemical reaction
- (1) UDP-alpha-D-glucose + 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one [math]\displaystyle{ \rightleftharpoons }[/math] UDP + (2R)-4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside
- (2) UDP-alpha-D-glucose + 2,4-dihydroxy-2H-1,4-benzoxazin-3(4H)-one [math]\displaystyle{ \rightleftharpoons }[/math] UDP + (2R)-4-hydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside
The enzyme is involved in the detoxification of the benzoxazinoids, DIBOA (2,4-dihydroxy-2H-1,4-benzoxazin-3(4H)-one) and DIMBOA (2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one).
References
- ↑ "Hydroxamic Acid glucosyltransferases from maize seedlings". Plant Physiology 90 (3): 1071–6. July 1989. doi:10.1104/pp.90.3.1071. PMID 16666853.
- ↑ "Two glucosyltransferases are involved in detoxification of benzoxazinoids in maize". The Plant Journal 28 (6): 633–42. December 2001. doi:10.1046/j.1365-313x.2001.01161.x. PMID 11851909.
External links
- 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one+2-D-glucosyltransferase at the US National Library of Medicine Medical Subject Headings (MeSH)
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