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Additional Subnuclear Structures

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...

The Nucleus

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 Nucleus

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...

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Related Experiment Video

Updated: May 13, 2026

Computational Analysis of the Caenorhabditis elegans Germline to Study the Distribution of Nuclei, Proteins, and the Cytoskeleton

Computational Analysis of the Caenorhabditis elegans Germline to Study the Distribution of Nuclei, Proteins, and the Cytoskeleton

Published on: April 19, 2018

Nuclear organization in the nematode C. elegans.

Rahul Sharma¹, Peter Meister

¹Cell Fate and Nuclear Organization, Institute of Cell Biology, University of Bern, CH-3012 Bern, Switzerland.

Current Opinion in Cell Biology

|March 14, 2013

Summary

Caenorhabditis elegans research reveals how genetic tools identify signals controlling chromatin architecture, advancing developmental biology and understanding nuclear organization

Area of Science:

Developmental Biology
Cell Biology
Genetics

Background:

The nematode Caenorhabditis elegans is a key model organism in developmental biology due to its invariant cell lineage, genetics, and small genome.
Despite its suitability, nuclear organization in C. elegans remained largely unexplored until recently.
Understanding nuclear organization is crucial for determining cell fate.

Purpose of the Study:

To review recent findings on nuclear organization in C. elegans.
To highlight genetic tools used to study chromatin 3D architecture.
To identify sequences and signals that regulate chromatin organization and cell fate.

Main Methods:

Leveraging the genetic toolkit available for Caenorhabditis elegans.
Analyzing genetic sequences and signals impacting chromatin structure.

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Published on: April 19, 2018

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Comparative analysis with other model systems.

Main Results:

Identification of key genetic sequences and signals governing chromatin's 3D architecture in C. elegans.
Exploitation of C. elegans' genetic tractability to study nuclear organization.
New insights into the link between nuclear organization and cell fate determination.

Conclusions:

Genetic tools in C. elegans have significantly advanced the study of nuclear organization.
Specific sequences and signals are critical for regulating chromatin architecture.
C. elegans provides a powerful system for comparative studies in developmental biology.