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Translational Regulation01:29

Translational Regulation

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Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
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Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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Types of RNA01:23

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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.
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Small RNA Modifications: Integral to Function and Disease.

Xudong Zhang1, Aaron E Cozen2, Ying Liu1

  • 1Department of Physiology and Cell Biology, University of Nevada, Reno School of Medicine, Reno, NV 89557, USA.

Trends in Molecular Medicine
|November 15, 2016
PubMed
Summary
This summary is machine-generated.

Small RNAs, including miRNAs, piRNAs, and tsRNAs, are modified with nucleotides, impacting biological processes and disease. Advanced detection methods reveal their diagnostic potential as disease biomarkers.

Keywords:
ARM-seqDM-tRNA-seqLC-MS/MSRNA editingRNA modificationtRNA-derived small RNAs

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Area of Science:

  • Molecular Biology
  • Epigenetics
  • Biochemistry

Background:

  • Small RNAs (including microRNAs, piRNAs, and tRNA-derived small RNAs) can carry modified nucleotides, adding a layer of biological information.
  • These RNA modifications influence crucial cellular functions like stability, stress responses, metabolism, immunity, and epigenetic inheritance.
  • Recent advancements in high-throughput technologies enable detailed analysis of these modifications.

Purpose of the Study:

  • To explore the role of modified nucleotides in small RNAs.
  • To investigate the functional implications of RNA modifications in various biological processes.
  • To highlight the diagnostic potential of small RNA modifications as disease markers.

Main Methods:

  • Utilizing high-resolution, high-throughput methods.
  • Employing techniques for detecting, mapping, and screening small RNA modifications.
  • Analyzing diverse small RNA species like miRNAs, piRNAs, and tsRNAs.

Main Results:

  • Confirmed the presence of diverse RNA modifications in small RNAs (miRNAs, piRNAs, tsRNAs).
  • Demonstrated that RNA modifications modulate RNA stability and physiological processes.
  • Showcased the potential of these modifications as sensitive disease markers.

Conclusions:

  • RNA modifications represent a critical layer of information in small RNAs.
  • These modifications are integral to fundamental biological processes and disease states.
  • Advanced screening technologies offer new avenues for biomarker discovery using small RNA modifications.