BG1 At1g52400 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. BGL18_ARATH 528 BGLU18 Beta-D-glucopyranosyl abscisate beta-glucosidase F19K6.15 BGL1 Beta-glucosidase 18 MVRFEKVHLVLGLALVLTLVGAPTKAQGPVCGAGLPDKFSRLNFPEGFIWGTATAAFQVEGAVNEGCRGPSMWDTFTKKFPHRCENHNADVAVDFYHRYKEDIQLMKDLNTDAFRLSIAWPRIFPHGRMSKGISKVGVQFYHDLIDELLKNNIIPLVTVFHWDTPQDLEDEYGGFLSGRIVQDFTEYANFTFHEYGHKVKHWITFNEPWVFSRAGYDNGKKAPGRCSPYIPGYGQHCQDGRSGYEAYQVSHNLLLSHAYAVDAFRNCKQCAGGKIGIAHSPAWFEPQDLEHVGGSIERVLDFILGWHLAPTTYGDYPQSMKDRVGHRLPKFTEAEKKLLKGSTDYVGMNYYTSVFAKEISPDPKSPSWTTDSLVDWDSKSVDGYKIGSKPFNGKLDVYSKGLRYLLKYIKDNYGDPEVIIAENGYGEDLGEKHNDVNFGTQDHNRKYYIQRHLLSMHDAICKDKVNVTGYFVWSLMDNFEWQDGYKARFGLYYIDFQNNLTRHQKVSGKWYSEFLKPQFPTSKLREEL Beta-glucosidase homolog 1 Beta-glucosidase 1