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2015 ; 1280
(ä): 395-409
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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
PMID25736763
show ga
Posttranslational 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.