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. 1980 Mar;141(3):1331–1339. doi: 10.1128/jb.141.3.1331-1339.1980

Bacillus subtilis deoxyribonucleic acid gyrase.

A Sugino, K F Bott
PMCID: PMC293831  PMID: 6245067

Abstract

Bacillus subtilis 168 was shown to contain a deoxyribonucleic acid (DNA) gyrase activity which closely resembled those of the enzymes isolated from Escherichia coli and Micrococcus luteus in its enzymatic requirements, substrate specificity, and sensitivity to several antibiotics. The enzyme was purified from the wild type and nalidixic acid-resistant and novobiocin-resistant mutants of B. subtilis and was functionally characterized in vitro. The genetic loci nalA and novA but not novB were shown to code for portions of the functional gyrase. Enzyme from the antibiotic-resistant mutants was resistant to the drug in vitro. The most striking observation was the remarkable similarity between the B. subtilis enzyme and other DNA gyrases, especially with respect to the oxolinic acid-induced DNA cleavage in the presence of sodium dodecyl sulfate. All of the enzymes appeared to possess the same specificity of cutting sites regardless of the source or type of DNA used. This result implies that gyrase binding to DNA is highly specific.

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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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