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Related Concept Videos

Human Virome01:26

Human Virome

44
The human body harbors a vast and diverse viral community known as the human virome. The virome includes bacteriophages that infect bacteria, and eukaryotic viruses that infect human cells. Transient dietary and environmental viruses also contribute to this dynamic ecosystem. Estimates suggest the human body may contain on the order of 10¹³ viral particles, though abundance varies widely by body site and detection method.Comprehensive characterization of the virome has become possible...
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Non-LTR Retrotransposons03:18

Non-LTR Retrotransposons

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As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
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Retrovirus Life Cycles01:10

Retrovirus Life Cycles

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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
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LTR Retrotransposons03:08

LTR Retrotransposons

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LTR retrotransposons are class I transposable elements with long terminal repeats flanking an internal coding region. These elements are less abundant in mammals compared to other class I transposable elements. About 8 percent of human genomic DNA comprises LTR retrotransposons. Some of the common examples of LTR retrotransposons are Ty elements in yeast and Copia elements in Drosophila.
The internal coding region of LTR retrotransposons and their mechanism of transposition closely resembles a...
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Viruses with RNA Genomes01:29

Viruses with RNA Genomes

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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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Related Experiment Video

Updated: Apr 20, 2026

Reverse Genetics Mediated Recovery of Infectious Murine Norovirus
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Reverse Genetics Mediated Recovery of Infectious Murine Norovirus

Published on: June 24, 2012

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A novel reverse genetics system for human norovirus.

Stefan Taube1, Christiane E Wobus2

  • 1Institute for Virology and Cell Biology, University of Lübeck, 23562 Lübeck, Germany.

Trends in Microbiology
|December 3, 2014
PubMed
Summary
This summary is machine-generated.

Human noroviruses cause widespread illness and economic impact. A new reverse genetics system may overcome challenges in studying these viruses in cell culture, aiding research and therapeutic development.

Keywords:
generation of reporter-tagged virusesnorovirus reverse genetics system

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Area of Science:

  • Virology
  • Molecular Biology
  • Infectious Diseases

Background:

  • Human noroviruses are a major cause of gastroenteritis globally.
  • Lack of efficient cell culture models hinders norovirus research.
  • This limits understanding of virus-host interactions and therapeutic strategies.

Purpose of the Study:

  • To introduce a novel single-plasmid reverse genetics system for noroviruses.
  • To enable efficient genetic manipulation and study of noroviruses.

Main Methods:

  • Development and application of a single-plasmid reverse genetics system.
  • Utilizing this system for norovirus research.

Main Results:

  • The system provides a new tool for norovirus research.
  • Facilitates investigation into virus-host interactions.
  • Supports the development of antiviral therapies.

Conclusions:

  • The single-plasmid reverse genetics system is a significant advancement.
  • It addresses a critical gap in norovirus research capabilities.
  • This system is expected to accelerate progress in understanding and controlling norovirus infections.