Identification and characterization of large protein complexes is a mainstay of biochemical toolboxes. Utilization of cross-linking chemicals can facilitate the capture and identification of transient or weak interactions of a transient nature (Huang and Kim, PloS One 8:e61430, 2013; Gao et al., J Vis Exp doi: 10.3791/51387, 2014). Here we describe a detailed methodology for a cell culture-based proteomic approach. We describe the generation of cells stably expressing green fluorescent protein (GFP)-tagged proteins under the tetracycline-inducible promoter and subsequent proteomic analysis of GFP-interacting proteins. We include a list of proteins that were identified as interactors of GFP.
CITATION STYLE
Cummins, T. D., & Sapkota, G. P. (2018). Characterization of Protein Complexes Using Chemical Cross-Linking Coupled Electrospray Mass Spectrometry. In Methods in Molecular Biology (Vol. 1788, pp. 43–61). Humana Press Inc. https://doi.org/10.1007/7651_2017_85
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