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Viruses with RNA Genomes01:29

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RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
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Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
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Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
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The plasma membrane is a dynamic barrier composed of lipids, proteins, and carbohydrates. It is the epicenter of many cellular processes required for cell growth and survival. Carbohydrates have unique structural and chemical properties that help the plasma membrane to carry out its functions effectively.
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Simplified Reverse Genetics Method to Recover Recombinant Rotaviruses Expressing Reporter Proteins
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Carbohydrate recognition by rotaviruses.

Xing Yu1, Helen Blanchard

  • 1Institute for Glycomics, Griffith University, Gold Coast campus, QLD, 4222, Australia, x.yu@griffith.edu.au.

Journal of Structural and Functional Genomics
|November 20, 2013
PubMed
Summary
This summary is machine-generated.

Rotaviruses cause severe childhood diarrhea globally. This review details how rotaviruses attach to cells by recognizing specific sugar structures (glycans) on the cell surface, a critical step for infection.

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Area of Science:

  • Virology
  • Molecular Biology
  • Glycobiology

Background:

  • Rotaviruses are a significant global health threat, primarily causing severe diarrhea in children.
  • Understanding rotavirus cell entry mechanisms is crucial for developing effective antiviral strategies.
  • Initial virus-cell attachment, mediated by receptor recognition, is a key step in rotavirus infection.

Purpose of the Study:

  • To review and summarize the current understanding of glycan receptor recognition by rotaviruses.
  • To highlight the critical role of carbohydrate-containing receptors in rotavirus cell attachment.
  • To consolidate knowledge on the molecular interactions governing rotavirus entry.

Main Methods:

  • Literature review of existing studies on rotavirus-glycan interactions.
  • Analysis of published data on rotavirus binding specificities.
  • Synthesis of information on the molecular mechanisms of rotavirus cell attachment.

Main Results:

  • Rotaviruses recognize and bind to specific cell surface glycans (carbohydrate structures).
  • This glycan recognition is essential for the initial attachment of the virus to host cells.
  • Different rotavirus strains may exhibit distinct glycan receptor preferences.

Conclusions:

  • Glycan receptor recognition is a fundamental process in rotavirus infection.
  • Further characterization of these interactions can inform the development of novel therapeutic interventions.
  • Targeting glycan-host interactions presents a potential strategy to block rotavirus entry.