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. 1971 May;68(5):964-8.
doi: 10.1073/pnas.68.5.964.

Specific inactivation of 16S ribosomal RNA induced by colicin E3 in vivo

Specific inactivation of 16S ribosomal RNA induced by colicin E3 in vivo

C M Bowman et al. Proc Natl Acad Sci U S A. 1971 May.

Abstract

Treatment of sensitive Escherichia coli cells with colicin E3 leads to inactivation of 30S ribosomal subunits. In vitro reconstitution of 30S subunits indicates that the E3-induced defect lies solely in the 16S RNA. 16S RNA from E3-treated cells lacks several T(1) RNase oligonucleotides of normal 16S RNA, including the one from the 3'-end of the 16S RNA, as analyzed by the fingerprint technique of Sanger. An RNA fragment about 50 nucleotides long has been isolated from E3-treated cells. This RNA contains the original 3'-terminal oligonucleotide and other oligonucleotides missing in the E3-16S RNA. The results show that colicin E3 treatment causes the cleavage of 16S RNA at a specific position near the 3'-terminus.

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