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Genomic DNA in Eukaryotes

Genomic DNA in Eukaryotes

Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.

Replication in Eukaryotes

Replication in Eukaryotes

In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
Many Proteins Orchestrate Replication at the Origin
Eukaryotic replication follows many of the same...

Replication in Eukaryotes

Replication in Eukaryotes

Replication in Eukaryotes

Replication in Eukaryotes

In eukaryotic cells, DNA replication is highly conserved and tightly regulated. Multiple linear chromosomes must be duplicated with high fidelity before cell division, so there are many proteins that fulfill specialized roles in the replication process. Replication occurs in three phases: initiation, elongation, and termination, and ends with two complete sets of chromosomes in the nucleus.
Many Proteins Orchestrate Replication at the Origin
Eukaryotic replication follows many of the same...

Replication in Eukaryotes

Replication in Eukaryotes

Mismatch Repair

Mismatch Repair

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Updated: May 30, 2026

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms

Enhanced Genome Editing with Cas9 Ribonucleoprotein in Diverse Cells and Organisms

Published on: May 25, 2018

Genome walking in eukaryotes.

Claudia Leoni¹, Mariateresa Volpicella, Francesca De Leo

¹Department of Biochemistry and Molecular Biology, University of Bari, Bari, Italy.

The FEBS Journal

|August 19, 2011

Summary

Genome walking is a molecular technique to identify unknown DNA sequences. This review explores various genome walking strategies and their applications in eukaryotic genomic research.

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Area of Science:

Genomics
Molecular Biology

Background:

Genome walking is a key molecular procedure for identifying nucleotide sequences within purified genomes.
Its primary requirement is a known starting nucleotide sequence.

Purpose of the Study:

To review and analyze various genome walking strategies.
To examine the diverse applications of genome walking in eukaryotic genomic research.

Main Methods:

Analysis of numerous established and improved genome walking strategies.
Systematic examination of genome walking applications.

Main Results:

Detailed overview of technical aspects and scientific ingenuity behind genome walking methods.
Demonstration of the technique's potential in identifying nucleotide sequences and analyzing mutant collections (viral DNA, transposons, T-DNA).

Conclusions:

Genome walking, with its diverse strategies and recent advancements like next-generation sequencing, remains a powerful tool for rapid identification of unknown sequences.
The technique offers significant potential across various fields of genomic research.