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PubMed1971

Genetic recombination in Streptomyces bikiniensis var. zorbonensis.

A genetic recombination system in Streptomyces bikiniensis var. zorbonensis is described. This strain produces a mixture of antibiotics including zorbamycin and zorbonomycin B and C. A genetic map has been constructed from data obtained from an analysis of haploid recombinants which shows linkage relationships of 17 marker loci. Determination of map location has been made for three different loci affecting antibiotic biosynthesis in this strain.

Amino Acids↗
PubMed1979

[Properties of the R plasmids of Sh. flexneri strains isolated in Bulgaria].

The study of 3,237 Sh. flexneri strains isolated in Bulgaria revealed that 50.72% of them were resistant to antibiotics. 95.88% of the antibiotic-resistant strains were found to have R factor of incompatibility groups F, I or N. The plasmids of incompatibility group F had the property fin+, and the plasmids of groups I and N had the property fin-. R plasmids were divided into 4 groups by their ability for phage restriction.

Bulgaria↗