Can mass spectrometry analyze protein interactions?

Protein-protein interactions refer to the phenomenon where two or more proteins, or proteins and other compounds, bind together to form large molecular protein complexes. Proteins can perform more complex and diverse biological functions through interactions with other proteins or compounds, participating in various important physiological activities. Under normal circumstances, interactions between proteins are constantly in dynamic change, and some protein interactions are weak and transient. Therefore, the core content of protein-protein interaction research includes effectively capturing interacting proteins and subsequently characterizing them qualitatively and quantitatively. Mass spectrometry is a powerful tool in current proteomics research that can achieve various protein analyses, including molecular mass, amino acid sequence, spatial structure, content, post-translational modifications, and protein-protein interaction analysis. Using mass spectrometry to analyze protein-protein interactions mainly involves analyzing the second part of protein interaction research, namely, the qualitative and quantitative identification of interacting proteins, while the capture of interacting proteins requires other techniques such as immunoprecipitation (IP), co-immunoprecipitation (Co-IP), Far-Western Blot, and (GST-) Pull down. Therefore, techniques like IP, Co-IP, Far-Western Blot, and (GST-) Pull down are usually combined with mass spectrometry to achieve a complete protein-protein interaction analysis workflow.

Biotech company Biotye Parker adopts Thermo Fisher's Q ExactiveHF mass spectrometry platform combined with Nano-LC chromatography, providing rapid and efficientmass spectrometry analysis of protein-protein interactionsservice package. You only need to tell us your experimental objectives and send your cells to us, and we will handle all subsequent aspects of the project, including cell culture, cell labeling, protein extraction, protein digestion, peptide separation, mass spectrometry analysis, raw mass spec data analysis, and bioinformatics analysis. Free consultation is welcome.

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