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. 1992 Jul;174(14):4622–4628. doi: 10.1128/jb.174.14.4622-4628.1992

Genetic analysis of absB, a Streptomyces coelicolor locus involved in global antibiotic regulation.

T Adamidis 1, W Champness 1
PMCID: PMC206257  PMID: 1624449

Abstract

The filamentous soil bacterium Streptomyces coelicolor is known to produce four antibiotics which are genetically and structurally distinct. An extensive search for antibiotic regulatory mutants led to the discovery of absB mutants, which are antibiotic deficient but sporulation proficient. Genetic analysis of the absB mutants has resulted in definition of the absB locus at 5 o'clock on the genetic map. Multiple cloned copies of the actII-ORF4 gene, an activator of synthesis of the antibiotic actinorhodin, restore actinorhodin biosynthetic capability to the absB mutants. These results are interpreted to mean that the failure of absB mutants to produce antibiotics results from decreased expression of the antibiotic genes. The absB gene is proposed to be involved in global regulation of antibiotic synthesis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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