KEGG   ENZYME: 3.2.1.175Help
Entry
EC 3.2.1.175                Enzyme                                 

Name
beta-D-glucopyranosyl abscisate beta-glucosidase;
AtBG1;
ABA-beta-D-glucosidase;
ABA-specific beta-glucosidase;
ABA-GE hydrolase;
beta-D-glucopyranosyl abscisate hydrolase
Class
Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
BRITE hierarchy
Sysname
beta-D-glucopyranosyl abscisate glucohydrolase
Reaction(IUBMB)
D-glucopyranosyl abscisate + H2O = D-glucose + abscisate [RN:R09723]
Reaction(KEGG)
Substrate
D-glucopyranosyl abscisate;
H2O [CPD:C00001]
Product
D-glucose [CPD:C00031];
abscisate [CPD:C06082]
Comment
The enzyme hydrolzes the biologically inactive beta-D-glucopyranosyl ester of abscisic acid to produce active abscisate. Abscisate is a phytohormone critical for plant growth, development and adaption to various stress conditions. The enzyme does not hydrolyse beta-D-glucopyranosyl zeatin [1].
History
EC 3.2.1.175 created 2011
Pathway
Carotenoid biosynthesis
Orthology
K15748  
beta-D-glucopyranosyl abscisate beta-glucosidase
Genes
ATH: 
AT1G52400(BGLU18)
ALY: 
CRB: 
EUS: 
BRP: 
Taxonomy
Reference
1  [PMID:16990135]
  Authors
Lee KH, Piao HL, Kim HY, Choi SM, Jiang F, Hartung W, Hwang I, Kwak JM, Lee IJ, Hwang I
  Title
Activation of glucosidase via stress-induced polymerization rapidly increases active pools of abscisic acid.
  Journal
Cell. 126 (2006) 1109-20.
  Sequence
[ath:AT1G52400]
Reference
2  [PMID:17923167]
  Authors
Kato-Noguchi H, Tanaka Y
  Title
Effect of ABA-beta-D-glucopyranosyl ester and activity of ABA-beta-D-glucosidase  in Arabidopsis thaliana.
  Journal
J. Plant. Physiol. 165 (2008) 788-90.
  Sequence
[ath:AT1G52400]
Reference
3  [PMID:10948220]
  Authors
Dietz KJ, Sauter A, Wichert K, Messdaghi D, Hartung W
  Title
Extracellular beta-glucosidase activity in barley involved in the hydrolysis of ABA glucose conjugate in leaves.
  Journal
J. Exp. Bot. 51 (2000) 937-44.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 

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