Quantitative Multiplex Immunoprecipitation (QMI) uses flow cytometry for sensitive detection of differences in the abundance of targeted protein-protein interactions between two samples. QMI can be performed using a small amount of biomaterial, does not require genetically engineered tags, and can be adapted for any previously defined protein interaction network.
Brown, E. A., Neier, S. C., Neuhauser, C., Schrum, A. G., Smith, S. E. Quantification of Protein Interaction Network Dynamics using Multiplexed Co-Immunoprecipitation. J. Vis. Exp. (150), e60029, doi:10.3791/60029 (2019).