Abstract
A new one-step procedure for the isolation of bacterial RNA, involving lysis by proteinase K in the presence of sodium dodecyl sulfate, is described. Pulse-labeled RNA isolated by this procedure for Bacillus brevis, Bacillus subtilis, and Escherichia coli B has been found to contain a substantial fraction (15-40%) of polyadenylated RNA as determined by adsorption to oligo(dT)-cellulose. This contrasts with RNA isolated by procedures involving phenol extraction, a process which appears to lead to the selective loss of polyadenylated RNA. The presence of polyadenylated RNA in E. coli was confirmed by an independent method which involved hybridization with [3H]polyuridylic acid. Using the proteinase K method for RNA isolation, it was possible to demonstrate the in vitro synthesis of polyadenylated RNA by toluene-treated cells of B. brevis, B. subtilis, and E. coli.
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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
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