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Methods to detect NF-?B Acetylation and Methylation #MMPMID25736763
Chen J; Chen LF
Methods Mol Biol 2015[]; 1280 (ä): 395-409 PMID25736763show ga
Post-translational modifications of NF-?B, including acetylation and methylation, have emerged as an important regulatory mechanism for determining the duration and strength of NF-?B nuclear activity as well as its transcriptional output. Within the seven NF-?B family proteins, the RelA subunit of NF-?B is the most studied for its regulation by lysine acetylation and methylation. Acetylation or methylation at different lysine residues modulates distinct functions of NF-?B, including DNA binding and transcription activity, protein stability, and its interaction with NF-?B modulators. Here, we describe the experimental methods to monitor the in vitro and in vivo acetylated or methylated forms of NF-?B. These methods include radiolabeling the acetyl- or methyl- groups and immunoblotting with pan or site-specific acetyl- or methyl-lysine antibodies. Radiolabeling is useful in the initial validation of the modifications. Immunoblotting with antibodies provides a rapid and powerful approach to detect and analyze the functions of these modifications in vitro and in vivo.