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Front Microbiol. 2015 Sep 15;6:972. doi: 10.3389/fmicb.2015.00972. eCollection 2015.

Efficient recombinant production of prodigiosin in Pseudomonas putida.

Author information

  • 1Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich GmbH Jülich, Germany.
  • 2Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich GmbH Jülich, Germany.
  • 3Institute of Bio- and Geosciences (IBG-1): Biotechnology, Forschungszentrum Jülich GmbH Jülich, Germany.
  • 4Institute of Bioorganic Chemistry, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich GmbH Jülich, Germany ; Institute of Bio- and Geosciences (IBG-1): Biotechnology, Forschungszentrum Jülich GmbH Jülich, Germany.
  • 5Institute of Molecular Enzyme Technology, Heinrich Heine University Düsseldorf, Forschungszentrum Jülich GmbH Jülich, Germany ; Institute of Bio- and Geosciences (IBG-1): Biotechnology, Forschungszentrum Jülich GmbH Jülich, Germany.

Abstract

Serratia marcescens and several other bacteria produce the red-colored pigment prodigiosin which possesses bioactivities as an antimicrobial, anticancer, and immunosuppressive agent. Therefore, there is a great interest to produce this natural compound. Efforts aiming at its biotechnological production have so far largely focused on the original producer and opportunistic human pathogen S. marcescens. Here, we demonstrate efficient prodigiosin production in the heterologous host Pseudomonas putida. Random chromosomal integration of the 21 kb prodigiosin biosynthesis gene cluster of S. marcescens in P. putida KT2440 was employed to construct constitutive prodigiosin production strains. Standard cultivation parameters were optimized such that titers of 94 mg/L culture were obtained upon growth of P. putida at 20°C using rich medium under high aeration conditions. Subsequently, a novel, fast and effective protocol for prodigiosin extraction and purification was established enabling the straightforward isolation of prodigiosin from P. putida growth medium. In summary, we describe here a highly efficient method for the heterologous biosynthetic production of prodigiosin which may serve as a basis to produce large amounts of this bioactive natural compound and may provide a platform for further in-depth studies of prodiginine biosynthesis.

KEYWORDS:

Pseudomonas putida; extraction; heterologous production; prodigiosin; purification

PMID:
26441905
PMCID:
PMC4569968
DOI:
10.3389/fmicb.2015.00972
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