Related Experiment Videos
Streptomycin biosynthesis and its regulation in Streptomycetes
J Distler1, K Mansouri, G Mayer
1BUGH Wuppertal, Microbiology Department, Germany.
Gene
|June 15, 1992
Summary
Researchers explored streptomycin (Sm) biosynthesis gene clusters in Streptomyces species. They identified new genes and regulatory elements, revealing significant divergence and providing insights into Sm production control.
Area of Science:
- Microbiology
- Molecular Biology
- Genetics
Background:
- Streptomycin (Sm) is a crucial antibiotic produced by Streptomyces species.
- Understanding the genetic basis of Sm biosynthesis is vital for optimizing production and discovering novel antibiotics.
Purpose of the Study:
- To investigate the gene order, structure, evolution, and function of streptomycin (Sm) biosynthetic genes (str).
- To compare the str gene clusters in Streptomyces griseus and S. glaucescens.
- To identify novel regulatory elements controlling Sm production.
Main Methods:
- Hybridization studies
- Nucleotide sequence determination
- Gene expression measurement
Main Results:
- Significant divergence in macro and micro structure of str gene clusters was observed between S. griseus and S. glaucescens.
- Genes involved in the synthesis of streptomycin moieties (dihydrostreptose, N-methyl-L-glucosamine) were identified.
- Novel regulatory elements, including gene strS and conserved TTA codons, were reported.
Conclusions:
- The study provides new insights into the genetic organization and evolution of streptomycin biosynthesis.
- Evidence suggests the involvement of physiological state, signal transduction, and activators in regulating streptomycin production.