CATH Classification
| Level | CATH Code | Description |
|---|---|---|
|
3 | Alpha Beta |
|
3.20 | Alpha-Beta Barrel |
|
3.20.20 | TIM Barrel |
|
3.20.20.80 | Glycosidases |
Domain Context
CATH Clusters
| Superfamily | Glycosidases |
| Functional Family | Beta-glucosidase 7 |
Enzyme Information
| 3.2.1.182 |
4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl glucoside beta-D-glucosidase.
based on mapping to UniProt P49235
(1) (2R)-4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D-glucopyranoside + H(2)O = 2,4-dihydroxy-7-methoxy-2H-1,4- benzoxazin-3(4H)-one + D-glucose. (2) (2R)-4-hydroxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl beta-D- glucopyranoside + H(2)O = 2,4-dihydroxy-2H-1,4-benzoxazin-3(4H)-one + D-glucose.
-!- The enzyme from Triticum aestivum (wheat) has a higher affinity for DIMBOA glucoside than DIBOA glucoside. -!- With Secale cereale (rye) the preference is reversed.
|
| 3.2.1.21 |
Beta-glucosidase.
based on mapping to UniProt P49235
Hydrolysis of terminal, non-reducing beta-D-glucosyl residues with release of beta-D-glucose.
-!- Wide specificity for beta-D-glucosides. -!- Some examples also hydrolyze one or more of the following: beta-D- galactosides, alpha-L-arabinosides, beta-D-xylosides and beta-D- fucosides.
|
UniProtKB Entries (1)
| P49235 |
HGGL1_MAIZE
Zea mays
4-hydroxy-7-methoxy-3-oxo-3,4-dihydro-2H-1,4-benzoxazin-2-yl glucoside beta-D-glucosidase 1, chloroplastic
|
PDB Structure
| PDB | 1E55 |
| External Links | |
| Method | X-RAY DIFFRACTION |
| Organism | |
| Primary Citation |
The mechanism of substrate (aglycone) specificity in beta-glucosidases is revealed by crystal structures of mutant maize beta-glucosidase-DIMBOA, -DIMBOAGlc, and -dhurrin complexes.
Proc. Natl. Acad. Sci. U.S.A.
|
