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Phosphopantetheine adenylyltransferase (PPAT) is an essential enzyme that catalyses a rate-limiting step in coenzyme A (CoA) biosynthesis in all organisms. This study was conducted to obtain a high amount of pure, soluble, and stable PPAT from the hyperthermophilic archaeon Pyrococcus abyssi with the aim of investigating its structural characterization by NMR. Production of this enzyme from its natural...