Journal
FOLIA MICROBIOLOGICA
Volume 55, Issue 2, Pages 119-125Publisher
SPRINGER
DOI: 10.1007/s12223-010-0018-5
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Funding
- Slovak Research and Development Agency [APVV-0017-07]
- Slovak Academy of Sciences [2/0104/09]
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An incomplete oligoketide (PK; 'polyketide') gene cluster, aur1, responsible for the production of an angucycline-like antibiotic auricin was identified in Streptomyces aureofaciens CCM 3239. A region downstream of the aur1 was cloned and sequenced, revealing 28 new genes encoding putative protein products involved in deoxysugar biosynthesis and other putative PK-related biosynthetic functions. In addition, a gene, bpsA, encoding a protein similar to non-ribosomal peptide synthetases (NRPSs) was identified in this region. A deduced protein product of the gene showed the highest similarity to NRPSs IndC from Erwinia chrysanthemi and BpsA from Streptomyces lavendulae, both involved in the biosynthesis of a blue pigment indigoidine. S. aureofaciens CCM 3239 was found to produce an extracellular blue pigment with identical properties as indigoidine. A deletion mutant of bpsA in S. aureofaciens CCM 3239 failed to produce the blue pigment. In addition, the deletion of bpsA had a positive effect on auricin production. The results indicate the involvement of the bpsA gene in biosynthesis of the indigoidine blue pigment in S. aureofaciens CCM 3239.
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