Gramicidin S synthetase. Temperature dependence and thermodynamic parameters of substrate amino acid activation reactions

In the biosynthesis of the cyclic decapeptide antibiotic gramicidin S, the constituent amino acids are activated by a two-step mechanism involving aminoacyl adenylate and thio ester formation which are both reversible processes. The dissociation constants (KD) for the gramicidin S synthetase-substra...

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