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Related Concept Videos

Nuclear Protein Sorting01:34

Nuclear Protein Sorting

Nuclear protein sorting is the selective trafficking of histones, polymerases, gene regulatory proteins into the nucleus and exporting RNAs and ribosomes to the cytosol. It is a tightly controlled process that regulates gene expression within a cell.
Proteins targeted to the nucleus carry nuclear localization signals or NLS recognized by import receptors in the cytosol. Similarly, proteins with nuclear export signals are recognized by export receptors. Import and export receptors are...
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...
The Nucleus01:32

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...
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...
Chromatin Position Affects Gene Expression02:35

Chromatin Position Affects Gene Expression

Chromatin is the massive complex of DNA and proteins packaged inside the nucleus. The complexity of chromatin folding and how it is packaged inside the nucleus greatly influences  access to genetic information. Generally, the nucleus' periphery is considered transcriptionally repressive, while the cell's interior is considered a transcriptionally active area. 
Topologically Associated Domains (TADs)
The 3-dimensional positioning of chromatin in the nucleus influences the timing and level of...
Additional Subnuclear Structures02:10

Additional Subnuclear Structures

The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals. 
The nucleus contains many membrane-less subnuclear organelles or nuclear bodies, such as nucleoli, Cajal bodies, speckles, paraspeckles, etc. These nuclear...

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Related Experiment Video

Updated: Jun 18, 2026

Exploiting Live Imaging to Track Nuclei During Myoblast Differentiation and Fusion
09:03

Exploiting Live Imaging to Track Nuclei During Myoblast Differentiation and Fusion

Published on: April 13, 2019

Nuclei take a position: managing nuclear location.

Brian Burke1, Kyle J Roux

  • 1Department of Anatomy and Cell Biology, The University of Florida, Gainesville, FL 32610-0235, USA. brian.burke@imb.a-star.edu.sg

Developmental Cell
|November 20, 2009
PubMed
Summary
This summary is machine-generated.

Cellular structure is adaptable, with nucleus positioning crucial for cell function and migration. Mechanical coupling between the nucleus and cytoskeleton is key to understanding cell activities and diseases.

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Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy
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Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy

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Heterokaryon Technique for Analysis of Cell Type-specific Localization
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Heterokaryon Technique for Analysis of Cell Type-specific Localization

Published on: March 11, 2011

Related Experiment Videos

Last Updated: Jun 18, 2026

Exploiting Live Imaging to Track Nuclei During Myoblast Differentiation and Fusion
09:03

Exploiting Live Imaging to Track Nuclei During Myoblast Differentiation and Fusion

Published on: April 13, 2019

Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy
10:57

Mapping Absolute DNA Density in Cell Nuclei using Single-molecule Localization Microscopy

Published on: November 11, 2025

Heterokaryon Technique for Analysis of Cell Type-specific Localization
09:31

Heterokaryon Technique for Analysis of Cell Type-specific Localization

Published on: March 11, 2011

Area of Science:

  • Cell Biology
  • Biophysics
  • Developmental Biology

Background:

  • Eukaryotic cells exhibit significant morphological plasticity enabling diverse functions.
  • Cellular rearrangements, including nucleus relocation, are vital for processes like mitosis and cell migration.
  • Understanding nuclear positioning is critical for comprehending cellular activities.

Purpose of the Study:

  • To explore the mechanical coupling between the cell nucleus and cytoskeleton.
  • To elucidate the role of nuclear positioning in cellular functions and disease.

Main Methods:

  • Review of recent studies on nuclear-cytoskeletal interactions.
  • Analysis of mechanisms governing nuclear movement within eukaryotic cells.

Main Results:

  • Nuclear components are mechanically linked to the cytoskeleton.
  • This coupling influences cellular activities and morphological changes.
  • Insights into the functional significance of nuclear positioning have been gained.

Conclusions:

  • The mechanical coupling between the nucleus and cytoskeleton is a fundamental aspect of cell biology.
  • Proper nuclear positioning is essential for normal cellular function and implicated in various diseases.