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Original Articles

Intracellular ATP Levels Affect Secondary Metabolite Production in Streptomyces spp.

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Pages 1576-1581 | Received 07 Apr 2011, Accepted 06 May 2011, Published online: 22 May 2014
 

Abstract

The addition of extracellular ATP (exATP) to four Streptomyces strains had similar effects: low exATP levels stimulated antibiotic production and high levels reduced it. Compared with antibiotic production, the concentrations of intracellular ATP (inATP) in the tested strains were opposite, which suggests a role of inATP in regulating secondary metabolite production. Under inactivation of the polyphosphate kinase gene (ppk) in Streptomyces lividans, we observed the same results: when the inATP level in the mutant strain was lower than in the parent strain, more antibiotic was produced. Combining all the results, a strong inverse relationship between [inATP] and the secondary metabolite production is suggested by this study.

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