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Alliinase EGF-like domain Allicin is a thiosulphinate that gives rise to dithiines, allyl sulphides and ajoenes, the three groups of active compounds in Allium species. Allicin is synthesized from sulfoxide cysteine derivatives by alliinase (EC:4.4.1.4), whose C-S lyase activity cleaves C(beta)-S(gamma) bonds. It is thought that this enzyme forms part of a primitive plant defense system. This family represents the N-terminal EGF-like domain.
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