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Related Concept Videos

Conjugation01:19

Conjugation

Conjugation is a form of horizontal gene transfer that primarily occurs in bacteria and some archaea, promoting genetic diversity and adaptation. Bacteria can acquire resistance genes through conjugative plasmids, allowing them to survive antibiotic treatments that would otherwise be lethal. This process involves direct contact between cells through specialized structures such as the sex pilus and is mediated by conjugative plasmids, including the F (fertility) factor.Conjugation requires...
Phase II Reactions: Miscellaneous Conjugation Reactions01:19

Phase II Reactions: Miscellaneous Conjugation Reactions

Phase II biotransformations are detoxification mechanisms that conjugate xenobiotics with endogenous substances, neutralizing their toxicity.
A key example involves the conjugation of cyanide ions, which impair cellular respiration and alter hemoglobin into non-oxygen-carrying cyanmethemoglobin. To neutralize this threat, a sulfur atom from thiosulphate is transferred to the cyanide ion, catalyzed by the enzyme rhodanese, resulting in an inactive compound called thiocyanate. The production of...
Mechanism of Conjugation01:19

Mechanism of Conjugation

Bacterial conjugation is a mechanism of horizontal gene transfer that enables the exchange of genetic material between bacterial cells through direct contact. This process is facilitated by a donor cell carrying a conjugative plasmid, which encodes genes necessary for pilus formation, DNA replication, and transfer. The conjugative plasmid plays a central role in initiating and executing the transfer of genetic material.The tra region of the conjugative plasmid encodes proteins responsible for...
Phase II Conjugation Reactions: Overview01:14

Phase II Conjugation Reactions: Overview

Conjugation, a key component of phase II biotransformation reactions, is a vital process in drug detoxification. It involves transferring endogenous substances like glucuronic acid, sulfate, and glycine to drugs or their metabolites formed in phase I reactions. These conjugation reactions, often catalyzed by specific enzymes, transform potentially harmful metabolites into inactive, water-soluble forms easily excreted in urine or bile. By enhancing polarity and eliminating pharmacological...
Conjugated Proteins02:50

Conjugated Proteins

Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
Conjugated Proteins02:50

Conjugated Proteins

Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...

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Related Experiment Video

Updated: May 11, 2026

Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation
10:41

Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation

Published on: January 4, 2017

F conjugation: back to the beginning.

Denis Arutyunov1, Laura S Frost

  • 1Department of Biological Sciences, CW405 Biological Sciences Building, University of Alberta, Edmonton, Alberta T6G 2E9, Canada.

Plasmid
|May 2, 2013
PubMed
Summary
This summary is machine-generated.

Bacterial conjugation, a process involving the F plasmid, has been studied for 65 years. Research focused on cell surface events like pilus formation and mating pair interactions to understand conjugation mechanisms.

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Last Updated: May 11, 2026

Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation
10:41

Conjugative Mating Assays for Sequence-specific Analysis of Transfer Proteins Involved in Bacterial Conjugation

Published on: January 4, 2017

High-Resolution Comparison of Bacterial Conjugation Frequencies
05:18

High-Resolution Comparison of Bacterial Conjugation Frequencies

Published on: January 10, 2019

Getting an A with the 3Cs: Chromosome Conformation Capture for Undergraduates
09:13

Getting an A with the 3Cs: Chromosome Conformation Capture for Undergraduates

Published on: May 12, 2023

Area of Science:

  • Microbiology
  • Molecular Biology
  • Genetics

Background:

  • Bacterial conjugation is a key mechanism for horizontal gene transfer.
  • The F plasmid is a well-studied conjugative plasmid in bacteria.
  • Understanding conjugation is crucial for microbial genetics and evolution.

Purpose of the Study:

  • To review historical research on bacterial conjugation mediated by the F plasmid.
  • To highlight progress in understanding cell surface events during conjugation.
  • To stimulate renewed interest in fundamental aspects of conjugation.

Main Methods:

  • Literature review of early research on bacterial conjugation.
  • Focus on cell surface events: pilus, recipient cell receptors, mating pair formation.
  • Examination of exclusion mechanisms (surface and entry exclusion).

Main Results:

  • Significant progress has been made in understanding bacterial conjugation mechanisms over 65 years.
  • Early research elucidated critical cell surface interactions.
  • Key components like the pilus, recipient receptors, and exclusion systems were identified.

Conclusions:

  • A comprehensive understanding of bacterial conjugation is nearing completion.
  • Historical research provides a strong foundation for current studies.
  • Further investigation into early studied phenomena is warranted.