Skip to main content
Article thumbnail
Location of Repository


By P. D. Bragg and W. J. Polglase


Bragg, P. D. (University of British Columbia, Vancouver, B. C, Canada) and W. J. Polglase. Electron-transport components of streptomycin-dependent Escherichia coli. J. Bacteriol. 86:544–547. 1963.—When a streptomycin-dependent strain of Escherichia coli was grown in antibiotic-free medium, the resulting streptomycin-depleted cells were found to contain relatively large amounts of vitamin K2. Cytochromes a1 and a2 were absent from depleted cells, and these cells metabolized glucose with the accumulation of lactic acid. Depleted cells were normal in their content of coenzyme Q8, total flavine, and cytochrome b. Growth of depleted cells on medium containing dihydrostreptomycin restored their ability to metabolize lactic acid concomitantly with a decrease in vitamin K2 to a normal level, and with the formation of cytochromes a1 and a2. It is concluded that streptomycin (or dihydrostreptomycin) is required by dependent E. coli for maintenance of the integrity of the electron-transport system

Topics: Articles
Year: 1963
OAI identifier:
Provided by: PubMed Central
Sorry, our data provider has not provided any external links therefore we are unable to provide a link to the full text.

Suggested articles

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.