Abstract
Gene regulation by transcription factors involves complex protein interaction networks, which include chromatin remodeling and modifying proteins as an integral part. Decoding these protein interactions is crucial for our understanding of chromatin-mediated gene regulation. Here, we describe a method for the immunoprecipitation of in planta nuclear protein complexes followed by mass spectrometry (IP-MS) to identify interactions between transcription factors and chromatin remodelers/modifiers in plants. In addition to a step-by-step bench protocol for immunoprecipitation and subsequent mass spectrometry, we provide guidelines and pointers on necessary controls and data analysis approaches.
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