Studies on the regulation of colicin Ib synthesis - II. The synthesis of Col Ib-P9 specific RNA in vivo

R. E. Isaacson, J. Konisky

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We have been able to demonstrate RNA which is present only in colicinogenic cells by using purified Col Ib-P9 plasmid DNA and [32P]-pulse labeled RNA in DNA-RNA hybridization experiments. The relative amount of plasmid specific RNA in colicinogenic cells can be increased by treatment with mitomycin C and correlates with the increase in colicin producing cells. Using competition hybridization we have shown that the Col Ib-P9 plasmid specific RNA from uninduced cells contains the same species of RNA found in induced cells and vice versa. There is a requirement of 3′, 5′-cyclic AMP and 3′, 5′-cyclic AMP receptor protein for both colicin Ib-P9 synthesis and plasmid specific RNA synthesis. It is suggested that colicin Ib synthesis is under transcriptional control.

Original languageEnglish (US)
Pages (from-to)223-232
Number of pages10
JournalMGG Molecular & General Genetics
Volume132
Issue number3
DOIs
StatePublished - Sep 1 1974

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