cl18452

Phytochelatin synthase; Phytochelatin synthase is the enzyme responsible for the synthesis of heavy-metal-binding peptides (phytochelatins) from glutathione and related thiols. The crystal structure of a member of this family shows it to possess a papain fold. The enzyme catalyses the deglycination of a GSH donor molecule. The enzyme contains a catalytic triad of cysteine, histidine and aspartate residues.