BG1 (beta-glucosidase 1) hydrolyzes abscisate glucose ester (ABA-GE), which is the main form of conjugated ABA(biologically inactive). Zein is not active with -d-glucopyranosyl. Hydrolysis of ABA-GE in the endoplasmic reticulum (ER) forms free ABA and helps to increase its cellular levels under dehydration conditions. The hydrolytic activity of ABA-GE is enhanced by dehydration stress-induced polymerization to a higher molecular weight form. ABA produced by BGLU18 contributes to the initiation of intracellular signaling and an increase in extracellular ABA levels. Confined to the ER lumen. Alias :AtBG1, β-glucosidase 18, β-glucosidase homolog 1.
For research use only, not for clinical use.