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Updated: Aug 11, 2026

Detection of the pH-dependent Activity of Escherichia coli Chaperone HdeB In Vitro and In Vivo
Published on: October 23, 2016
RNA chaperone activity of large ribosomal subunit proteins from Escherichia coli
Katharina Semrad1, Rachel Green, Renée Schroeder
1Max F Perutz Laboratories, Institute of Microbiology and Genetics, Dr. Bohrgasse 9/4, 1030 Vienna, Austria. katharina.semrad@univie.ac.at
Abstract:
The ribosome is a highly dynamic ribonucleoprotein machine. During assembly and during translation the ribosomal RNAs must routinely be prevented from falling into kinetic folding traps. Stable occupation of these trapped states may be prevented by proteins with RNA chaperone activity. Here, ribosomal proteins from the large (50S) ribosome subunit of Escherichia coli were tested for RNA chaperone activity in an in vitro trans splicing assay. Nearly a third of the 34 large ribosomal subunit proteins displayed RNA chaperone activity. We discuss a possible role of this function during ribosome assembly and during translation.
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