Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Chromosomal Theory of Inheritance01:39

Chromosomal Theory of Inheritance

59.1K
In 1866, Gregor Mendel published the results of his pea plant breeding experiments, providing evidence for predictable patterns in the inheritance of physical characteristics. The significance of his findings was not immediately recognized. In fact, the existence of genes was unknown at the time. Mendel referred to hereditary units as “factors.”
59.1K
Separation of Sister Chromatids02:17

Separation of Sister Chromatids

4.2K
At the transition from prophase to metaphase, there is a reduction in cohesion along the chromosomal arms, resulting in the resolution of sister chromatids. However, residual cohesin connections remain to hold the sister chromatids together until the transition from metaphase to anaphase. The residual connection prevents any premature separation of sister chromatids, blocking the risks of aneuploidy within the daughter cells.
At the onset of anaphase, separase, a proteolytic enzyme, is...
4.2K
Gene Conversion02:08

Gene Conversion

10.4K
Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
10.4K
Homologous Recombination02:31

Homologous Recombination

61.6K
The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
61.6K
Anaphase A and B01:39

Anaphase A and B

5.1K
Microtubules form through the end-to-end polymerization of tubulin heterodimers. Kinetochore microtubules originate from the spindle poles, and their plus-ends connect with the kinetochores on sister-chromatids. Ndc80 protein complexes, present on the kinetochore, form low-affinity links with the plus end of these kinetochore microtubules.
Plus-end depolymerization releases tubulin heterodimers from the terminal region of the microtubule. As tubulin subunits are lost, the Ndc80 complexes detach...
5.1K
Restarting Stalled Replication Forks02:37

Restarting Stalled Replication Forks

6.1K
DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...
6.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Multi-scale dynamic imaging reveals that cooperative motility behaviors promote efficient predation in bacteria.

Nature communications·2023
Same author

Misic, a general deep learning-based method for the high-throughput cell segmentation of complex bacterial communities.

eLife·2021
Same author

ATP-Driven Separation of Liquid Phase Condensates in Bacteria.

Molecular cell·2020
Same author

Nanoscale organization of tetraspanins during HIV-1 budding by correlative dSTORM/AFM.

Nanoscale·2019
Same author

DNA Organization and Superesolved Segregation.

Methods in molecular biology (Clifton, N.J.)·2018
Same author

Imaging of Bacterial Chromosome Organization by 3D Super-Resolution Microscopy.

Methods in molecular biology (Clifton, N.J.)·2017

Related Experiment Video

Updated: Dec 9, 2025

Live Cell Imaging of Chromosome Segregation During Mitosis
06:39

Live Cell Imaging of Chromosome Segregation During Mitosis

Published on: March 14, 2018

9.7K

Physical Views on ParABS-Mediated DNA Segregation.

Baptiste Guilhas1, Antoine Le Gall1, Marcello Nollmann2

  • 1Centre de Biochimie Structurale, CNRS UMR 5048, INSERM U1054, Université de Montpellier, Montpellier, France.

Advances in Experimental Medicine and Biology
|September 7, 2020
PubMed
Summary

The ParABS system, crucial for bacterial DNA segregation, was studied using biophysical methods and physical modeling. This research advanced understanding of how this complex system assembles, segregates, and positions bacterial chromosomes and plasmids.

Keywords:
DNA organizationDNA segregationQuantitative methodsSub-cellular organizationSuper-resolution microscopy

More Related Videos

Use of Time-Lapse Microscopy and Stage-Specific Nuclear Depletion of Proteins to Study Meiosis in S. cerevisiae
07:48

Use of Time-Lapse Microscopy and Stage-Specific Nuclear Depletion of Proteins to Study Meiosis in S. cerevisiae

Published on: October 11, 2022

2.1K
Author Spotlight: Characterizing DNA Replication of Pathogenic Repeats to Uncover Mechanisms of Replication Fork Stalling and Expansion
05:22

Author Spotlight: Characterizing DNA Replication of Pathogenic Repeats to Uncover Mechanisms of Replication Fork Stalling and Expansion

Published on: September 13, 2024

1.1K

Related Experiment Videos

Last Updated: Dec 9, 2025

Live Cell Imaging of Chromosome Segregation During Mitosis
06:39

Live Cell Imaging of Chromosome Segregation During Mitosis

Published on: March 14, 2018

9.7K
Use of Time-Lapse Microscopy and Stage-Specific Nuclear Depletion of Proteins to Study Meiosis in S. cerevisiae
07:48

Use of Time-Lapse Microscopy and Stage-Specific Nuclear Depletion of Proteins to Study Meiosis in S. cerevisiae

Published on: October 11, 2022

2.1K
Author Spotlight: Characterizing DNA Replication of Pathogenic Repeats to Uncover Mechanisms of Replication Fork Stalling and Expansion
05:22

Author Spotlight: Characterizing DNA Replication of Pathogenic Repeats to Uncover Mechanisms of Replication Fork Stalling and Expansion

Published on: September 13, 2024

1.1K

Area of Science:

  • Microbiology
  • Molecular Biology
  • Biophysics

Background:

  • Bacterial DNA segregation is essential for cell division.
  • The ParABS system is a key multi-component machinery involved in this process.
  • Understanding its mechanism is vital for comprehending bacterial genetics.

Purpose of the Study:

  • To elucidate the mechanism of the ParABS system.
  • To describe the assembly, segregation, and positioning of bacterial chromosomes and plasmids mediated by ParABS.
  • To highlight the role of biophysical measurements and physical modeling in this understanding.

Main Methods:

  • Utilized biophysical measurements.
  • Employed physical modeling techniques.
  • Focused on the three-component ParABS system.

Main Results:

  • Advanced the understanding of ParABS-mediated complex assembly.
  • Provided insights into the segregation mechanism of bacterial chromosomes and plasmids.
  • Clarified the positioning role of the ParABS system.

Conclusions:

  • Biophysical and modeling approaches are powerful tools for dissecting complex biological systems like ParABS.
  • The ParABS system's function in DNA segregation is complex and multifaceted.
  • Further research can build upon these findings to explore variations and applications of such systems.