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Nat Chem Biol. 2007 Jul;3(7):379-86.

Mining and engineering natural-product biosynthetic pathways.

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  • 1Biotica, Chesterford Research Park, Little Chesterford, Essex CB10 1XL, UK.


Natural products continue to fulfill an important role in the development of therapeutic agents. In addition, with the advent of chemical genetics and high-throughput screening platforms, these molecules have become increasingly valuable as tools for interrogating fundamental aspects of biological systems. To access the vast portion of natural-product structural diversity that remains unexploited for these and other applications, genome mining and microbial metagenomic approaches are proving particularly powerful. When these are coupled with recombineering and related genetic tools, large biosynthetic gene clusters that remain intractable or cryptic in the native host can be more efficiently cloned and expressed in a suitable heterologous system. For lead optimization and the further structural diversification of natural-product libraries, combinatorial biosynthetic engineering has also become indispensable. However, our ability to rationally redesign biosynthetic pathways is often limited by our lack of understanding of the structure, dynamics and interplay between the many enzymes involved in complex biosynthetic pathways. Despite this, recent structures of fatty acid synthases should allow a more accurate prediction of the likely architecture of related polyketide synthase and nonribosomal peptide synthetase multienzymes.

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