Multidomain enzymes involved in peptide synthesis

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Abstract
Biosynthesis of peptides in non-ribosomal systems is catalyzed by multifunctional enzymes that employ the thio-template mechanism. Recent studies on the analysis of the primary structure of several peptide synthetases have revealed that they are organized in highly conserved and repeated functional domains. The aligned domains provide the template for peptide synthesis, and their order determines the sequence of the peptide product.