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Related Concept Videos

DNA Bacteriophages01:26

DNA Bacteriophages

Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...
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...
Conservative Site-specific Recombination and Phase Variation02:53

Conservative Site-specific Recombination and Phase Variation

Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
Lysogenic Cycle of Bacteriophages00:43

Lysogenic Cycle of Bacteriophages

In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the host genome, allowing the bacteria to replicate the phage DNA along with the bacterial genome. The incorporated copy of the phage genome is called the prophage. Some prophages can re-activate and enter the lytic cycle. This often occurs in response to a perturbation, such as DNA damage, but can also transpire in the absence of...
Viral Replication: Lytic Cycle01:20

Viral Replication: Lytic Cycle

Bacteriophages, or phages, are viruses that specifically infect bacteria. Among them, T-even bacteriophages, such as T4, exhibit a well-characterized lytic replication cycle in Escherichia coli (E. coli). This process ensures the rapid proliferation of the virus while ultimately leading to the destruction of the bacterial host.Attachment and DNA InjectionThe infection process begins with the recognition and binding of the T4 phage to the E. coli cell surface. Tail fibers of the phage...
Transduction01:16

Transduction

Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome are...

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Related Experiment Video

Updated: Jul 16, 2026

Following Cell-fate in E. coli After Infection by Phage Lambda
06:10

Following Cell-fate in E. coli After Infection by Phage Lambda

Published on: October 14, 2011

Probing nucleoid structure in bacteria using phage lambda integrase-mediated chromosome rearrangements.

Nathalie Garcia-Russell1, Samantha S Orchard, Anca M Segall

  • 1Department of Biology, San Diego State University, San Diego, CA, USA.

Methods in Enzymology
|March 14, 2007
PubMed
Summary

Conservative site-specific recombination is a versatile tool used in genetic engineering and biotechnology. This article highlights its application in studying chromosome structure and organization, alongside other genetic uses.

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Site-specific Bacterial Chromosome Engineering: ΦC31 Integrase Mediated Cassette Exchange (IMCE)

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Last Updated: Jul 16, 2026

Following Cell-fate in E. coli After Infection by Phage Lambda
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Following Cell-fate in E. coli After Infection by Phage Lambda

Published on: October 14, 2011

Isolation and Genome Analysis of Single Virions using 'Single Virus Genomics'
08:31

Isolation and Genome Analysis of Single Virions using 'Single Virus Genomics'

Published on: May 26, 2013

Site-specific Bacterial Chromosome Engineering: &#934;C31 Integrase Mediated Cassette Exchange (IMCE)
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Site-specific Bacterial Chromosome Engineering: ΦC31 Integrase Mediated Cassette Exchange (IMCE)

Published on: March 16, 2012

Area of Science:

  • Molecular Biology
  • Genetics
  • Biotechnology

Background:

  • Conservative site-specific recombination (CSSR) is a fundamental biological process with broad applications.
  • CSSR has been engineered for diverse uses in prokaryotic and eukaryotic systems.

Purpose of the Study:

  • To illustrate the utility of CSSR as a probe for chromosome structure and organization.
  • To provide a concise overview of other genetic engineering and biotechnology applications of CSSR.

Main Methods:

  • The study focuses on a specific example of CSSR application in chromosome analysis.
  • A summary of various other CSSR applications in genetics and biotechnology is presented.

Main Results:

  • Demonstrates the effectiveness of CSSR in investigating chromosome architecture.
  • Highlights the adaptability of CSSR for numerous genetic and biotechnological purposes.

Conclusions:

  • CSSR is a powerful and adaptable technology with significant implications in molecular biology and genetics.
  • The diverse applications of CSSR underscore its importance in scientific research and biotechnology development.