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DNA Isolation

DNA Isolation

DNA from cells is required for many biotechnology and research applications, such as molecular cloning. To remove and purify DNA from cells, researchers use various methods of DNA extraction. While the specifics of different protocols may vary, some general concepts underlie the process of DNA extraction.

DNA Isolation

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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...

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Related Experiment Video

Updated: Jul 14, 2026

An Efficient Method for the Isolation of Highly Purified RNA from Seeds for Use in Quantitative Transcriptome Analysis

An Efficient Method for the Isolation of Highly Purified RNA from Seeds for Use in Quantitative Transcriptome Analysis

Published on: January 11, 2017

Protein extraction from cereal seeds.

Gérard Branlard¹, Emmanuelle Bancel

¹INRA Station d'Amélioration et Santé des Plantes, Clermont Ferrand, France.

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

|November 10, 2006

Summary

This study details methods for cereal seed protein extraction, overcoming challenges from starch and carbohydrates. It provides specific protocols for isolating different protein groups for proteomic analysis.

Area of Science:

Agricultural Science
Biochemistry
Proteomics

Background:

Cereal seeds contain components like starch that hinder protein extraction.
Seed proteins are categorized into albumins, globulins, prolamins, and glutelins based on solubility.
Efficient protein extraction is crucial for detailed seed analysis.

Purpose of the Study:

To present a general procedure for extracting proteins from immature cereal seeds.
To detail specific methods for isolating distinct cereal seed protein fractions.
To facilitate proteomic analysis of cereal seed proteins.

Main Methods:

A general extraction protocol for green or immature cereal kernels.
Specific extraction methods for whole storage proteins (prolamins, glutelins).

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Salt buffer extraction for albumins-globulins and phase partitioning for amphiphilic proteins.

Procedures for extracting proteins bound to starch granules.

Main Results:

Established methods for isolating various cereal seed protein fractions.
Demonstrated applicability of these methods for 2-D electrophoresis.
Enabled detailed proteomic investigations of seed proteins.

Conclusions:

The described procedures effectively address challenges in cereal seed protein extraction.
These methods are suitable for comprehensive proteomic studies of seed proteins.
The protocols allow for specific isolation of protein groups for further analysis.