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BioMed Central, BMC Genomics, 1(11), p. 10

DOI: 10.1186/1471-2164-11-10

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The dynamic architecture of the metabolic switch in Streptomyces coelicolor

Journal article published in 2010 by A. {Rodriguez-Garcia}, {Juarez-Hermosillo, A. {Rodr??guez-Garc??a}, Kay Nieselt, Florian Battke, Alexander Herbig, Per Bruheim, Alexander Wentzel, Øyvind M. Jakobsen, Mohammad T. Alam, Håvard Sletta, Maria E. Merlo, T. M. Jakobsen, Jonathan Moore, Walid Am M. Omara and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Background: During the lifetime of a fermenter culture, the soil bacterium S. coelicolor undergoes a major metabolic switch from exponential growth to antibiotic production. We have studied gene expression patterns during this switch, using a specifically designed Affymetrix genechip and a high-resolution time-series of fermenter-grown samples.Results: Surprisingly, we find that the metabolic switch actually consists of multiple finely orchestrated switching events. Strongly coherent clusters of genes show drastic changes in gene expression already many hours before the classically defined transition phase where the switch from primary to secondary metabolism was expected. The main switch in gene expression takes only 2 hours, and changes in antibiotic biosynthesis genes are delayed relative to the metabolic rearrangements. Furthermore, global variation in morphogenesis genes indicates an involvement of cell differentiation pathways in the decision phase leading up to the commitment to antibiotic biosynthesis.Conclusions: Our study provides the first detailed insights into the complex sequence of early regulatory events during and preceding the major metabolic switch in S. coelicolor, which will form the starting point for future attempts at engineering antibiotic production in a biotechnological setting. ?? 2010 Nieselt et al; licensee BioMed Central Ltd.