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Related Concept Videos

Retrovirus Life Cycles01:10

Retrovirus Life Cycles

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 retrovirus to...
Viral Recombination00:57

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
Viruses with RNA Genomes01:29

Viruses with RNA Genomes

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...
Retroviruses02:33

Retroviruses

Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
Inhibitors Of Virion Release01:25

Inhibitors Of Virion Release

Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...
Viral Replication: Lysogenic Cycle01:16

Viral Replication: Lysogenic Cycle

The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects its...

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Updated: Jun 1, 2026

Rescue of Recombinant Newcastle Disease Virus from cDNA
10:55

Rescue of Recombinant Newcastle Disease Virus from cDNA

Published on: October 11, 2013

[Kunjin virus replicon--a novel viral vector].

Shihua Li1, Xiaofeng Li, E'de Qin

  • 1State Key Laboratory ofPathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences, Beijing 100071, China.

Sheng Wu Gong Cheng Xue Bao = Chinese Journal of Biotechnology
|June 10, 2011
PubMed
Summary
This summary is machine-generated.

Kunjin virus replicon, a self-replicating RNA, is a well-defined flavivirus replicon. Its high expression, stability, and low cytotoxicity make it a valuable viral vector for research and therapeutic applications.

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Area of Science:

  • Virology
  • Molecular Biology

Context:

  • Viral replicons are self-replicating RNA derived from viral genomes, lacking structural proteins.
  • Kunjin virus is a member of the Flaviviridae family, Flavivirus genus.
  • Kunjin virus replicon is the first clearly defined flavivirus replicon.

Purpose:

  • To review recent advancements in the development, properties, and applications of the Kunjin virus replicon system.
  • To highlight the utility of Kunjin virus replicons as a viral vector.

Summary:

  • Kunjin virus replicon is characterized by high expression, low cytotoxicity, and genetic stability.
  • These properties make it suitable for studying viral genome replication.
  • It is also applicable for recombinant protein production, vaccine development, and gene therapy.

Impact:

  • The Kunjin virus replicon system offers a versatile platform for diverse biological research and biotechnological applications.
  • Its unique characteristics facilitate advancements in virology, vaccine development, and gene therapy.
  • This review provides insights into the potential of Kunjin virus replicons in scientific and clinical settings.