RNase E autoregulates its synthesis in Escherichia coli by binding directly to a stem-loop in the rne 5' untranslated region
Related Experiment Video
Updated: Jun 24, 2026

Optimized Quantitative Assessment of Enhancer RNA Stability in Mouse Embryonic Stem Cells
Published on: November 21, 2025
Alyssa Schuck1, Alexis Diwa, Joel G Belasco
1Kimmel Center for Biology and Medicine at the Skirball Institute, New York University School of Medicine, New York, NY 10016, USA.
Abstract:
RNase E autoregulates its production in Escherichia coli by governing the decay rate of rne (RNase E) mRNA. It does so by a mechanism that is dependent in part on hp2, a cis-acting stem-loop within the rne 5' untranslated region. In principle, hp2 could function either as a cleavage site for RNase E or as a binding site for that protein or an ancillary factor. Here we show that the effector region at the top of hp2 is cleaved poorly by RNase E yet binds the catalytic domain of that ribonuclease with a sequence specificity reflecting its efficacy in feedback regulation. These findings suggest that hp2 controls RNase E synthesis by binding to RNase E and expediting cleavage elsewhere within the rne transcript.
Related Concept Videos
Bacterial RNA Polymerase
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
Translational Regulation
Types of RNA
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Types of RNA
RNA Performs Diverse...
Regulation of Expression at Multiple Steps
Ribosomal RNA Synthesis
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...

