Nucleus

The eukaryotic nucleus is an organized and membrane-bound organelle that serves as the control center of the cell, housing the cell's genetic material and coordinating activities like gene expression, replication, and RNA processing.

Nuclear Membrane

Nucleoplasm

 

4. Nucleolus

• A dense, spherical structure within the nucleus.
• Function: Site of ribosomal RNA (rRNA) synthesis and ribosome subunit assembly.

5. Nuclear Matrix

• A network of protein fibers providing structural support and possibly playing a role in the regulation of gene expression and chromatin organization.

6. Nuclear Pores

• Embedded in the nuclear envelope.
• Composed of nucleoporins, forming large, multi-protein complexes.
• Function: Regulate bidirectional transport of molecules such as RNA, ribosomal subunits, and proteins.

7. Nuclear Lamina

• A dense fibrillar network on the inner surface of the nuclear envelope.
• Composed of intermediate filament proteins (lamins).
• Provides structural support and anchors chromatin and nuclear pore complexes.

This highly organized architecture enables the nucleus to efficiently regulate cellular functions while protecting the integrity of genetic material.

 

 

Structure and Function

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