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- W2039732133 endingPage "591" @default.
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- W2039732133 abstract "The DNA-binding activity of the transcription nuclear factor κB (NF-κB) is regulated by a redox-control mechanism involving the reduction of a disulphide bond from a specific cysteine residue conserved in all members of the NF-κB family. Thioredoxin is involved in this redox control. DNA binding and transactivating capacity of NF-κB are up-regulated by inducible phosphorylation. Here we demonstrate that the conserved redox cysteine in the c-Rel protein is involved in the phosphorylation regulation of the protein. When this cysteine residue is mutated to an aspartic acid residue, the mutant protein loses its capacity to be phosphorylated and its DNA-binding activity. In addition, our results suggest that, when the conserved redox cysteine is chemically modified by N-ethylmaleimide and 2-chloro-1,3-dinitrobenzene, the protein c-Rel cannot be phosphorylated. In contrast, the protein in which the cysteine residue was replaced by a serine residue, creating a potential phosphorylation site, is highly phosphorylated and binds κB sequences. The protein could loose the redox regulation of the phosphorylation when the residue replacing the cysteine can be itself phosphorylated. We also show that specific inhibitors of thioredoxin reductases impair the phosphorylation of the c-Rel protein, suggesting that the redox regulation of the protein controls its phosphorylation." @default.
- W2039732133 created "2016-06-24" @default.
- W2039732133 creator A5020324120 @default.
- W2039732133 creator A5056514542 @default.
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- W2039732133 date "2000-11-24" @default.
- W2039732133 modified "2023-10-17" @default.
- W2039732133 title "The conserved redox-sensitive cysteine residue of the DNA-binding region in the c-Rel protein is involved in the regulation of the phosphorylation of the protein" @default.
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- W2039732133 doi "https://doi.org/10.1042/bj3520583" @default.
- W2039732133 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1221492" @default.
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