A TEMPERATURE-SENSITIVE STREPTOMYCIN REQUIREMENT IN AN ESCHERICHIA COLI MUTANT

AUTOR(ES)

Plunkett, Geoffrey E.

RESUMO

Plunkett, Geoffrey E. (Biochemical Research Foundation, Newark, Del.). A temperature-sensitive streptomycin requirement in an Escherichia coli mutant. J. Bacteriol. 84:275–277. 1962.—A strain of Escherichia coli, streptomycin-dependent at 37.5 C, has been found to be capable of continuing cell division in the absence of streptomycin when incubated at 31 C. This property appeared to be heritable and persisted after repeated single-colony isolations from streptomycin-containing agar maintained at 37.5 C, or from streptomycin-free agar maintained at 31 C. The cells were stored under refrigeration on streptomycin-free agar slants, and retained their requirement for streptomycin when returned to 37.5 C after more than 7 months in its absence at lower temperatures.

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