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

Forces Acting on Chromosomes02:11

Forces Acting on Chromosomes

During mitosis, chromosome movements occur through the interplay of multiple piconewton level forces. In prometaphase, these forces help in chromosome assembly or congression at the equatorial plane, eventually leading to their alignment at the metaphase plate. The forces acting on the chromosomes are space and time-dependent; therefore, they vary with the position of the chromosomes as the cell progresses through mitosis. 
Microtubules and motor proteins exert two types of forces on...
Forces Acting on Chromosomes02:11

Forces Acting on Chromosomes

During mitosis, chromosome movements occur through the interplay of multiple piconewton level forces. In prometaphase, these forces help in chromosome assembly or congression at the equatorial plane, eventually leading to their alignment at the metaphase plate. The forces acting on the chromosomes are space and time-dependent; therefore, they vary with the position of the chromosomes as the cell progresses through mitosis. 
Microtubules and motor proteins exert two types of forces on...
Nuclear Stability03:18

Nuclear Stability

Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together in the...
Atomic Nuclei: Nuclear Magnetic Moment00:59

Atomic Nuclei: Nuclear Magnetic Moment

All atomic nuclei are positively charged. When they have a nonzero spin, they behave like rotating charges. As a consequence of their charge and spin, these nuclei generate a magnetic field (B). This, in turn, gives rise to a magnetic moment (μ), which is randomly oriented in the absence of an external magnetic field. When an external magnetic field (B0) is applied, the magnetic moment vectors can align with the field or against it in 2 + 1 orientations. A hydrogen nucleus, which is just a...
Nucleosome Remodeling02:54

Nucleosome Remodeling

Nucleosomes are the basic units of chromatin compaction. Each nucleosome consists of the DNA bound tightly around a histone core, which makes the DNA inaccessible to DNA binding proteins such as DNA polymerase and RNA polymerase. Hence, the fundamental problem is to ensure access to DNA when appropriate, despite the compact and protective chromatin structure.
Nucleosome remodeling complex
Eukaryotic cells have specialized enzymes called ATP-dependent nucleosome remodeling enzymes. These enzymes...
The Nucleus01:25

The Nucleus

The nucleus is a membrane-bound organelle that acts as a control center in a eukaryotic cell. It contains chromosomal DNA, which controls gene expression and precisely regulates the production of proteins within the cell. In contrast, the DNA inside the mitochondria and chloroplast only carries out functions that are specific to those organelles.
Arrangement of DNA within Nucleus
The regulation of gene expression inside the nucleus is dependent on many factors, including the DNA structure. The...

You might also read

Related Articles

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

Sort by
Same author

The centriculum, a membrane reticulum that surrounds C. elegans centrosomes, may serve as a microtubule filter.

Journal of cell science·2026
Same author

Kar4 acts as a Ste12 regulator in Saccharomyces cerevisiae, promoting Ste12 binding to a specific DNA motif genome-wide.

Genetics·2026
Same author

Kar4 acts as a Ste12 regulator in <i>Saccharomyces cerevisiae</i>, promoting Ste12 binding to a specific DNA motif genome-wide.

bioRxiv : the preprint server for biology·2025
Same author

The centriculum, a membrane that surrounds <i>C. elegans</i> centrosomes, acts as a microtubule filter.

bioRxiv : the preprint server for biology·2025
Same author

A membrane reticulum, the centriculum, affects centrosome size and function in Caenorhabditis elegans.

Current biology : CB·2023
Same author

Inhibition of Ribosome Assembly and Ribosome Translation Has Distinctly Different Effects on Abundance and Paralogue Composition of Ribosomal Protein mRNAs in Saccharomyces cerevisiae.

mSystems·2023

Related Experiment Video

Updated: May 22, 2026

A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton
05:47

A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton

Published on: July 29, 2018

Shaping the nucleus: factors and forces.

Alison D Walters1, Ananth Bommakanti, Orna Cohen-Fix

  • 1The Laboratory of Cell and Molecular Biology, NIDDK, NIH, Bethesda, Maryland 20892, USA.

Journal of Cellular Biochemistry
|May 9, 2012
PubMed
Summary
This summary is machine-generated.

Cell nucleus shape and size are crucial, with abnormalities linked to disease. This review explores factors influencing nuclear geometry and its potential impact on cell function, highlighting areas for future research.

More Related Videos

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
09:56

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers

Published on: August 31, 2021

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology
06:54

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

Published on: July 5, 2022

Related Experiment Videos

Last Updated: May 22, 2026

A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton
05:47

A Direct Force Probe for Measuring Mechanical Integration Between the Nucleus and the Cytoskeleton

Published on: July 29, 2018

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers
09:56

Direct Force Measurements of Subcellular Mechanics in Confinement using Optical Tweezers

Published on: August 31, 2021

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology
06:54

Combining 3D Magnetic Force Actuator and Multi-Functional Fluorescence Imaging to Study Nucleus Mechanobiology

Published on: July 5, 2022

Area of Science:

  • Cell Biology
  • Biophysics

Background:

  • The cell nucleus is typically depicted as spherical or ovoid.
  • Abnormal nuclear shape and size are diagnostic indicators for certain diseases.

Purpose of the Study:

  • To review factors and forces influencing nuclear shape and size.
  • To explore the relationship between endoplasmic reticulum (ER) structure and nuclear morphology.
  • To speculate on the connection between nuclear size and shape.

Main Methods:

  • Literature review of factors affecting nuclear geometry.
  • Discussion of ER-nucleus structural relationships.
  • Exploration of potential links between nuclear size and shape.

Main Results:

  • Significant progress has been made in understanding the determinants of nuclear shape and size.
  • The relationship between ER structure and nuclear morphology is a key area of investigation.
  • The functional consequences of nuclear geometry remain largely unexplored.

Conclusions:

  • Understanding nuclear shape and size is critical, especially in disease contexts.
  • Further research is needed to elucidate the functional implications of nuclear geometry.
  • The interplay between nuclear shape, size, and ER structure warrants deeper investigation.