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Related Concept Videos

Nucleic Acid Structure01:25

Nucleic Acid Structure

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The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
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Ribosomal RNA Synthesis02:53

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Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
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Protein Folding01:25

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Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
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RNA Stability01:53

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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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RNA Splicing01:32

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Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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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 regulating 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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Related Experiment Video

Updated: Sep 21, 2025

Nanomanipulation of Single RNA Molecules by Optical Tweezers
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How does RNA fold dynamically?

David Z Bushhouse1, Edric K Choi2, Laura M Hertz3

  • 1Interdisciplinary Biological Sciences Graduate Program, Northwestern University, Evanston, IL 60208, USA; Center for Synthetic Biology, Northwestern University, Evanston, IL 60208, USA. Electronic address: https://www.twitter.com/DavidBushhouse.

Journal of Molecular Biology
|June 6, 2022
PubMed
Summary
This summary is machine-generated.

The classical RNA folding model is incomplete. New research explores RNA folding dynamics, strand displacement, and protein factors to advance our understanding of RNA function and biotechnology.

Keywords:
conformational switchingcotranscriptional RNA foldingenergy landscapesprotein-mediated RNA foldingstrand displacement

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Area of Science:

  • Molecular Biology
  • Biophysics
  • Structural Biology

Background:

  • The classical model of RNA folding is insufficient to explain observed RNA dynamics.
  • Recent advances necessitate a re-evaluation of RNA folding principles.

Purpose of the Study:

  • To address key questions regarding RNA folding dynamics and function.
  • To explore the biophysical and biological implications of RNA conformational changes.

Main Methods:

  • The study poses theoretical questions rather than presenting experimental data.
  • It focuses on conceptual frameworks for understanding RNA folding.

Main Results:

  • Identifies three critical questions at the forefront of RNA folding research.
  • Highlights the need for new biophysical models for transcriptional elongation.
  • Proposes investigating the ubiquity of RNA strand displacement.
  • Raises questions about the role of cellular proteins in RNA conformational switching.

Conclusions:

  • Answering these questions will enhance fundamental knowledge of RNA folding and function.
  • Advances in understanding RNA dynamics will drive biotechnological innovation.
  • This research may uncover novel biological mechanisms and discoveries.