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Updated: Jul 5, 2026

A Liquid Phase Affinity Capture Assay Using Magnetic Beads to Study Protein-Protein Interaction: The Poliovirus-Nanobody Example
Published on: May 29, 2012
Single bead affinity detection (SINBAD) for the analysis of protein-protein interactions
Roberta Schulte1, Jessica Talamas, Christine Doucet
1Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, California, United States of America.
Abstract:
We present a miniaturized pull-down method for the detection of protein-protein interactions using standard affinity chromatography reagents. Binding events between different proteins, which are color-coded with quantum dots (QDs), are visualized on single affinity chromatography beads by fluorescence microscopy. The use of QDs for single molecule detection allows the simultaneous analysis of multiple protein-protein binding events and reduces the amount of time and material needed to perform a pull-down experiment.

