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Identification of dual histone modification-binding protein interaction by combining mass spectrometry and isothermal titration calorimetric analysis

Histone posttranslational modifications (HPTMs) play important roles in eukaryotic transcriptional regulation. Recently, it has been suggested that combinatorial modification codes that comprise two or more HPTMs can recruit readers of HPTMs, performing complex regulation of gene expression. However, the characterization of the multiplex interactions remains challenging, especially for the molecular network of histone PTMs, readers and binding complexes. Here, we developed an integrated method that combines a peptide library, affinity enrichment, mass spectrometry (MS) and bioinformatics analysis for the identification of the interaction between HPTMs and their binding proteins. | Nội dung Text Identification of dual histone modification-binding protein interaction by combining mass spectrometry and isothermal titration calorimetric analysis