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DNA Isolation

DNA Isolation

DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...

Plasmids

Plasmids

Plasmids are extrachromosomal DNA molecules found in bacteria, archaea, and some eukaryotic microbes like yeast. These small, circular DNA structures typically contain fewer than 30 genes, although some may exist linearly. Plasmids vary in their number within a cell, known as copy number. Single-copy plasmids are present in one copy per cell and multi-copy plasmids are present in multiple copies, reaching over 100 copies per cell.Plasmids usually replicate independently of the chromosomal DNA...

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Related Experiment Video

Updated: Jun 3, 2026

High-Throughput DNA Plasmid Multiplexing and Transfection Using Acoustic Nanodispensing Technology

High-Throughput DNA Plasmid Multiplexing and Transfection Using Acoustic Nanodispensing Technology

Published on: August 8, 2019

Small-scale plasmid DNA preparation.

J W Dale¹, P J Greenaway

¹Department of Microbiology, University of Surrey, Guildford, Surrey.

Methods in Molecular Biology (Clifton, N.J.)

|March 5, 2011

Summary

This summary is machine-generated.

This study presents a method for rapidly isolating pure plasmid DNA from bacterial cells. This DNA is suitable for restriction enzyme digestion, aiding in recombinant plasmid characterization.

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Related Experiment Videos

Last Updated: Jun 3, 2026

High-Throughput DNA Plasmid Multiplexing and Transfection Using Acoustic Nanodispensing Technology

High-Throughput DNA Plasmid Multiplexing and Transfection Using Acoustic Nanodispensing Technology

Published on: August 8, 2019

Purifying Plasmid DNA from Bacterial Colonies Using the Qiagen Miniprep Kit

Purifying Plasmid DNA from Bacterial Colonies Using the Qiagen Miniprep Kit

Published on: July 29, 2007

Streamlined Purification of Plasmid DNA From Prokaryotic Cultures

Streamlined Purification of Plasmid DNA From Prokaryotic Cultures

Published on: January 5, 2011

Area of Science:

Molecular Biology
Biotechnology
Genetics

Background:

Characterizing recombinant plasmids requires determining the size of the plasmid and insert DNA.
Accurate plasmid characterization necessitates pure plasmid DNA for restriction enzyme digestion.

Purpose of the Study:

To develop a method for simultaneous preparation of pure plasmid DNA from multiple isolates.
To ensure the prepared plasmid DNA is suitable for restriction enzyme digestion.

Main Methods:

Rapid bacterial cell lysis.
Effective separation of plasmid DNA from chromosomal DNA.
Removal of cellular contaminants like proteins and detergents.

Main Results:

Successful isolation of plasmid DNA in a purity level adequate for downstream enzymatic analysis.
The method addresses key requirements for efficient plasmid DNA preparation.

Conclusions:

The developed method provides a straightforward approach for preparing plasmid DNA for recombinant plasmid characterization.
This technique facilitates the analysis of plasmid size and insert characteristics.