May degrade glucosinolates (glucose residue linked by a thioglucoside bound to an amino acid derivative) to glucose, sulfate and any of the products: thiocyanates, isothiocyanates, nitriles, epithionitriles or oxazolidine-2-thiones. These toxic degradation products can deter insect herbivores. Seems to function in abscisic acid (ABA) and methyl jasmonate (MeJA) signaling in guard cells. Functionally redundant with TGG1. a thioglucoside + H2O = a sugar + a thiol. Interacts with MVP1. Expressed in phloem-associated cells. It seems that the absence of a catalytic proton donor in plant myrosinases is not impairing the hydrolysis of glucosinolates. Belongs to the glycosyl hydrolase 1 family. Truncated N-terminus. Truncated N-terminus. Truncated N-terminus. Truncated N-terminus.