BG1 (Beta-glucosidase 1) hydrolyzes abscisic acid glucose ester (ABA-GE) which represents the predominant form of conjugated ABA (biologically inactive). No activity with beta-D-glucopyranosyl zeatin. The hydrolysis of ABA-GE in the endoplasmic reticulum (ER) forms free ABA and contributes to increase its cellular levels under dehydration conditions. ABA-GE hydrolyzing activity is enhanced by dehydration stress-induced polymerization into higher molecular weight forms. The ABA produced by BGLU18 contributes to the initiation of intracellular signaling as well as the increase in the extracellular ABA level. Localised to ER lumen.Alternative names: AtBG1, Beta-glucosidase 18, Beta-glucosidase homolog 1.
应用类型
Immunolocalisation (IL) using electron microscopy, Western blot (WB)
免疫原
Purified recombinant BG1 of Arabidopsis thaliana, residues 27-528 with a His6-thioredoxin tagged, UniProt: Q9SE50, TAIR: At1g52400
