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The enzyme amygdalin β-glucosidase (EC 3.2.1.117) catalyzes the following chemical reaction:

(R)-amygdalin + H₂O ${\displaystyle \rightleftharpoons }$ (R)-prunasin + D-glucose

Thus, the two substrates of this enzyme are (R)-amygdalin and H₂O, whereas its two products are (R)-prunasin and D-glucose.

This enzyme belongs to the family of hydrolases, specifically those glycosidases that hydrolyse O- and S-glycosyl compounds. The systematic name of this enzyme class is amygdalin beta-D-glucohydrolase. Other names in common use include amygdalase, amygdalinase, amygdalin hydrolase, and amygdalin glucosidase.

It can be completely inhibited by the action of Glucono-δ-lactone at 1 mM concentration.

References

1. Petruccioli, M.; Brimer, L.; Cicalini, A. R.; et al. (1999). "Production and Properties of the Linamarase and Amygdalase Activities of Penicillium aurantiogriseum P35". Bioscience, Biotechnology, and Biochemistry. 63 (5): 805–812. doi:10.1271/bbb.63.805. PMID 10380623.

• Kuroki G, Lizotte PA, Poulton JE (1984). "Catabolism of (R)-Amygdalin and (R)-Vicianin by Partially Purified β-Glycosidases from Prunus serotina Ehrh. and Davallia trichomanoides". Z. Naturforsch. C. 39: 232–239.

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