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Immunoprecipitation

Immunoprecipitation

Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...

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Related Experiment Video

Updated: Jun 4, 2026

Protein Purification Technique that Allows Detection of Sumoylation and Ubiquitination of Budding Yeast Kinetochore Proteins Ndc10 and Ndc80

Protein Purification Technique that Allows Detection of Sumoylation and Ubiquitination of Budding Yeast Kinetochore Proteins Ndc10 and Ndc80

Published on: May 3, 2015

Denaturing protein immunoprecipitation from yeast.

William P Tansey¹

¹Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.

|March 2, 2011

Summary

Denaturing immunoprecipitation (IP) is preferred for recovering labeled proteins in pulse-chase experiments. This method simplifies protein harvest and reduces background noise, offering a safer alternative to traditional techniques.

Area of Science:

Biochemistry
Molecular Biology
Yeast Genetics

Background:

Pulse-chase experiments are crucial for studying protein dynamics.
Traditional immunoprecipitation (IP) methods can be labor-intensive and yield high background noise.
Handling radioactive samples requires specialized safety protocols.

Purpose of the Study:

To highlight the advantages of using denaturing immunoprecipitation (IP) for protein recovery.
To present a simplified and safer protocol for yeast protein analysis.

Main Methods:

Utilizing denaturing conditions with SDS (sodium dodecyl sulfate) during IP.
Boiling yeast cells in an SDS-containing solution to lyse cells and denature proteins.
Comparing denaturing IP with traditional methods like bead-beating.

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Last Updated: Jun 4, 2026

Protein Purification Technique that Allows Detection of Sumoylation and Ubiquitination of Budding Yeast Kinetochore Proteins Ndc10 and Ndc80

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Published on: May 3, 2015

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Characterizing Histone Post-translational Modification Alterations in Yeast Neurodegenerative Proteinopathy Models

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Main Results:

Denaturing IPs significantly reduce background noise compared to non-denaturing methods.
Protein harvest is simplified, streamlining the experimental workflow.
The method eliminates the need for hazardous bead-beating of radioactive samples.

Conclusions:

Denaturing IP is a superior technique for recovering labeled proteins from pulse-chase experiments in yeast.
This method enhances experimental efficiency and safety.
It provides a robust alternative for studying protein turnover and dynamics.