[Application of molecular biology for the discovery of biosynthetic genes of polyketide and peptide antibiotics produced by actinomycetes]
- PMID:16381179
[Application of molecular biology for the discovery of biosynthetic genes of polyketide and peptide antibiotics produced by actinomycetes]
Abstract
Actinomycetes are currently the main source of antibiotics. Genome sequencing reveals the presence in these organisms of multiple gene clusters for the synthesis of yet unidentified secondary metabolites. Technological advances in DNA isolation, cloning and sequencing, as well as development of bioinformatics, facilitate large scale search for new gene clusters in organisms with unknown genome sequence and in environmental DNA. Methods used for detection of polyketide synthase (PKS) and non-ribosomal peptide synthetase (NRPS) genes are described in this article. New PKS and NRPS genes give access to new biologically active natural products which can become drugs or substrates for chemical modifications. Even more inspiring is their use in combinatorial biosynthesis to produce a variety of compounds with rationally designed structures.
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