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Related Concept Videos

RNA Structure01:23

RNA Structure

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Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
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RNA Structure01:19

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The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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Related Experiment Video

Updated: Jan 13, 2026

Confocal Imaging of Double-Stranded RNA and Pattern Recognition Receptors in Negative-Sense RNA Virus Infection
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Multiscale imaging of RNA virus: bridging structural mapping and functional insights.

Wan-Ting He1, Zhi-Wen Jiang2, Michael Veit3

  • 1State Key Laboratory of Natural Medicines, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China.

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Advanced imaging techniques are crucial for studying RNA viruses like SARS-CoV-2. This review explores multiscale imaging to understand viral pathogenesis and develop countermeasures.

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Area of Science:

  • Virology
  • Microscopy
  • Pathogenesis

Background:

  • RNA viruses, including SARS-CoV-2, present significant global health challenges due to rapid mutation and host adaptability.
  • Understanding viral structures, infection mechanisms, and host interactions is vital for developing effective countermeasures.
  • Existing imaging techniques like cryo-electron microscopy and super-resolution microscopy offer valuable insights but have limitations in field of view or resolution.

Purpose of the Study:

  • To review recent advancements in multiscale imaging for RNA virus studies.
  • To highlight integrated imaging approaches for understanding RNA virus pathogenesis.
  • To bridge structural mapping with functional insights across different biological scales.

Main Methods:

  • Examination of cryo-electron tomography for high-resolution structural analysis.
  • Review of correlative multiscale imaging techniques.
  • Analysis of imaging progress across molecular, cellular, and tissue scales.

Main Results:

  • Integrated multiscale imaging approaches are emerging to overcome limitations of individual techniques.
  • Advances in cryo-electron tomography and correlative imaging provide deeper insights into viral processes.
  • Multiscale imaging links high-resolution structural data with broader biological context.

Conclusions:

  • Multiscale imaging is essential for comprehensive studies of RNA virus pathogenesis.
  • Advanced imaging tools accelerate the development of timely antiviral countermeasures.
  • Integrating molecular, cellular, and tissue-level imaging provides a holistic view of virus-host dynamics.