Related Experiment Video
Updated: Jun 13, 2026

Immunoprecipitation with an Anti-Epitope Tag Affinity Gel to Study Protein-Protein Interactions
Published on: January 5, 2024
A visual chip-based coimmunoprecipitation technique for analysis of protein-protein interactions
Qing Chen1, Qiongming Liu, Zhoumin Li
1State Key Laboratory of Proteomics, Beijing Proteome Research Center, Beijing Institute of Radiation Medicine, Beijing 102206, China.
Abstract:
Here we report a visual chip-based coimmunoprecipitation (vChip-coIP) platform for analysis of protein-protein interactions (PPIs) by combining advantages of an antibody microarray, traditional coIP, and a silver enhancement detection method. The chip was fabricated by spotting anti-Flag antibody on aldehyde-modified slides, and the resulting platform could assay immunoprecipitate from a small amount of crude cell lysates containing Flag-bait and Myc-prey. The interaction signals are visible using biotinylated anti-Myc antibody and colloidal gold-labeled streptavidin followed by a silver enhancement detection method. It is shown that vChip-coIP is a simple, cost-effective, and highly efficient platform for the comprehensive study of PPIs.
More Related Videos
10:05Visualization of Protein-protein Interaction in Nuclear and Cytoplasmic Fractions by Co-immunoprecipitation and In Situ Proximity Ligation Assay
Published on: January 16, 2017
07:57Quantification of Protein Interaction Network Dynamics using Multiplexed Co-Immunoprecipitation
Published on: August 21, 2019
Related Concept Videos
Immunoprecipitation
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Chromatin Immunoprecipitation- ChIP
Types of ChIP
ChIP can be divided into two types - X-ChIP and N-ChIP. X-ChIP involves in vivo cross-linking of histones and regulatory proteins to DNA, fragmenting the DNA by sonication, and isolating the protein-DNA...
Protein-protein Interfaces
Protein Networks
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...