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Affinity Chromatography

Affinity Chromatography

Affinity chromatography is a powerful technique extensively utilized for separating and purifying specific biomolecules from complex mixtures. It capitalizes on the highly selective binding between an analyte and its counterpart, such as antibody-antigen interactions. The counterpart is immobilized on the stationary phase, forming an affinity column. The stationary phase typically consists of solid support, such as agarose or porous glass beads, immobilizing the affinity ligand. The mobile...

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Updated: Jun 25, 2026

Investigating Tissue- and Organ-specific Phytochrome Responses using FACS-assisted Cell-type Specific Expression Profiling in Arabidopsis thaliana

Investigating Tissue- and Organ-specific Phytochrome Responses using FACS-assisted Cell-type Specific Expression Profiling in Arabidopsis thaliana

Published on: May 29, 2010

Phytochrome immunoaffinity purification.

R E Hunt¹, L H Pratt

¹Department of Biology, Vanderbilt University, Nashville, Tennessee 37235.

Plant Physiology

|August 1, 1979

Summary

This summary is machine-generated.

A new immunoaffinity purification method rapidly isolates highly pure, undegraded phytochrome from oat, pea, and rye. This technique offers a faster and more efficient way to obtain this crucial plant photoreceptor.

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Area of Science:

Plant biology
Biochemistry
Molecular biology

Background:

Phytochrome is a critical plant photoreceptor regulating various light-dependent processes.
Current purification methods can be time-consuming and may lead to phytochrome degradation.

Purpose of the Study:

To develop a rapid and highly efficient immunoaffinity purification procedure for phytochrome.
To assess the purity and integrity of phytochrome obtained using the novel method.

Main Methods:

Development of a phytochrome immunoaffinity purification protocol.
Purification of phytochrome from oat (Avena sativa), pea (Pisum sativum), and rye (Secale cereale).
Analysis of purified phytochrome using gel exclusion chromatography, isoelectric focusing, and SDS-PAGE.

Main Results:

Achieved >98% purity of undegraded oat phytochrome within 2 hours.
Immunoaffinity-purified phytochrome was indistinguishable from conventionally purified samples in purity and integrity.
Successfully purified phytochrome from crude extracts and brushite-purified preparations of multiple plant species.

Conclusions:

The developed immunoaffinity technique provides a superior method for rapid and high-purity phytochrome isolation.
This method is applicable across different plant species, facilitating further research on phytochrome function.