Abstract
Ribosomal RNA synthesis from three different rRNA cistrons of E. coli, located on different phage DNAs was compared and found to have the same characteristics as regards chain length, salt and temperature dependence and the effect of ppGpp. However, some clear and reproducible quantitative differences between rRNA synthesis from the different templates both in presence and absence of ppGGpp were found. Rifampicin and heparin experiments showed that these differences were located at the initiation sites. We propose that heterogeneity exists in the RNA polymerase binding regions of the rRNA prmoters in E. coli.
MeSH Terms
Coliphages/metabolism
DNA, Bacterial/metabolism
Escherichia coli/metabolism
Peptide Chain Initiation, Translational
Potassium Chloride/pharmacology
RNA, Ribosomal/biosynthesis
Rifampin/pharmacology
Temperature
Templates, Genetic
Transcription, Genetic
Chemicals
DNA, Bacterial
RNA, Ribosomal
Potassium Chloride
Rifampin
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Oostra B A
van Ooyen A J
Gruber M
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