Applied Microbiology and Biotechnology

, Volume 95, Issue 1, pp 61–75 | Cite as

Transcriptomic studies of phosphate control of primary and secondary metabolism in Streptomyces coelicolor

  • Juan F. MartínEmail author
  • Fernando Santos-Beneit
  • Antonio Rodríguez-García
  • Alberto Sola-Landa
  • Margaret C. M. Smith
  • Trond E. Ellingsen
  • Kay Nieselt
  • Nigel J. Burroughs
  • Ellizabeth M. H. Wellington


Phosphate controls the biosynthesis of many classes of secondary metabolites that belong to different biosynthetic groups, indicating that phosphate control is a general mechanism governing secondary metabolism. We refer in this article to the molecular mechanisms of regulation, mediated by the two-component system PhoR–PhoP, of the primary metabolism and the biosynthesis of antibiotics. The two-component PhoR–PhoP system is conserved in all Streptomyces and related actinobacteria sequenced so far, and involves a third component PhoU that modulates the signal transduction cascade. The PhoP DNA-binding sequence is well characterized in Streptomyces coelicolor. It comprises at least two direct repeat units of 11 nt, the first seven of which are highly conserved. Other less conserved direct repeats located adjacent to the core ones can also be bound by PhoP through cooperative protein–protein interactions. The phoRphoP operon is self-activated and requires phosphorylated PhoP to mediate the full response. About 50 up-regulated PhoP-dependent genes have been identified by comparative transcriptomic studies between the parental S. coelicolor M145 and the ΔphoP mutant strains. The PhoP regulation of several of these genes has been studied in detail using EMSA and DNase I footprinting studies as well as in vivo expression studies with reporter genes and RT-PCR transcriptomic analyses.


Streptomyces genetics Secondary metabolite biosynthesis PhoP-mediated regulation Transcriptomic studies Expression profiles Phosphate control 



This work was supported by the ERA-NET SysMO STREAM grant (GEN2006-27745-E/SYS) of the EU and by the CICYT grants BIO2010-16094 and ERA-IB-2 (PIM2010EEI-00667) of the Ministry of Economy and Competitiveness of Spain.


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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Juan F. Martín
    • 1
    Email author
  • Fernando Santos-Beneit
    • 2
  • Antonio Rodríguez-García
    • 1
    • 2
  • Alberto Sola-Landa
    • 2
  • Margaret C. M. Smith
    • 3
  • Trond E. Ellingsen
    • 4
  • Kay Nieselt
    • 5
  • Nigel J. Burroughs
    • 6
  • Ellizabeth M. H. Wellington
    • 7
  1. 1.Área de Microbiología. Fac. CC. Biológicas y AmbientalesUniversidad de LeónLeonSpain
  2. 2.Instituto de Biotecnología de León (INBIOTEC)LeonSpain
  3. 3.Institute of Medical SciencesUniversity of AberdeenAberdeenUK
  4. 4.Department of BiotechnologySINTEF Materials and ChemistryTrondheimNorway
  5. 5.Center for Bioinformatics Tübingen, Department of Information and Cognitive SciencesUniversity of TübingenTübingenGermany
  6. 6.Warwick Systems Biology CentreUniversity of WarwickCoventryUK
  7. 7.Department of Biological SciencesUniversity of WarwickCoventryUK

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