Ribosomal RNA Degradation and the Degradation Products in Starved <i>Escherichia coli</i>:IV. The Cellular Components Excreted into the Media during Different Deprivation Conditions

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Time course studies and analysis of the compounds excreted into the media was carried out during Mg- and P-deprivation, and complete starvation.<br> The rate of excretion of nucleic acid components was faster during complete starvation than during Mg-deprivation; while no release of phosphate and very little release of UV-absorbing material and ribose were seen during P-starvation. The characteristic release of protein (Folin positive substances) and sugar (anthrone positive substances) were found in every case. Analysis of the released materials after Sephadex G-25 column chromatography showed that large protein and sugar molecules were released in considerable amounts during each of the starvation conditions studied.

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