Translations:Pyridoxal phosphate/13/en

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The pyridoxal-5′-phosphate-dependent enzymes (PLP enzymes) catalyze myriad reactions. Although the scope of PLP-catalyzed reactions appears to be immense, the unifying principle is the formation of an internal lysine-derived aldimine. Once the amino substrate interacts with the active site, a new Schiff base is generated, commonly referred to as the external aldimine. After this step, the pathway for each PLP-catalyzed reactions diverge.

Mechanistic examples: racemization of alanine and elimination of cysteine.