 The prominence of salt bridges, disulfide bridges, hydrogen bonding, and glycosylation are thought to contribute to the enzyme’s stability, especially when the plant is under attack and experiences severe tissue damage.A feature of many ß-glucosidases are catalytic glutamate residues at their active sites, but two of these have been replaced by a single glutamine residue in myrosinase.Ascorbate has been shown to substitute for the activity of the glutamate residues.