Beta-D-glucosidase active on scopolin > esculin >> 4-MU-glucoside >> DIMBOA-glucoside. No activity with pNP-glucoside, oNP-glucoside and sinigrin as substrates. May possess beta-D-fucosidase activity. Required for the beneficial interaction with the endophytic fungus P.indica. May participate in the control of root colonization by P.indica by repressing defense responses and modulating other responses required for a mutualistic interaction. Hydrolysis of terminal, non-reducing beta-D-glucosyl residues with release of beta-D-glucose. Activated by tissue damage and upon binding to PBP1 or PBP2. Optimum pH is 5.5. Optimum temperature is 35 degrees Celsius. Homodimers. Binds to the deubiquitinating enzyme AMSH3. The inactive form interacts with PBP1/JAL30 to form the PYK10 complex, at least composed of PYK10/BGLU23, BGLU21, BGLU22, JAL22, JAL23, PBP1/JAL30, PBP2/JAL31, JAL32, JAL33, JAL34, JAL35, GLL22 and GLL23. Located in ER bodies. Expressed exclusively in roots. Up-regulated by wounding, 2,4-D and methyl jasmonate (MeJA). Down-regulated by salt and mannitol. Forms interchain disulfide bonds. Belongs to the glycosyl hydrolase 1 family. Truncated N-terminus.