Please use this identifier to cite or link to this item: https://doi.org/10.1006/bbrc.1998.8323
Title: Mutations which abolish phosphorylation of the TRAF-binding domain of TNF receptor 2 enhance receptor-mediated NF-κB activation
Authors: Ng, P.W.P. 
Jänicke, R.U. 
Porter, A.G. 
Keywords: NF-κB activation
Phosphorylation
TNF receptor
TRAF-binding domain
Issue Date: 27-Mar-1998
Citation: Ng, P.W.P., Jänicke, R.U., Porter, A.G. (1998-03-27). Mutations which abolish phosphorylation of the TRAF-binding domain of TNF receptor 2 enhance receptor-mediated NF-κB activation. Biochemical and Biophysical Research Communications 244 (3) : 756-762. ScholarBank@NUS Repository. https://doi.org/10.1006/bbrc.1998.8323
Abstract: We demonstrate that a 41 amino acid region (amino acids 379 to 419) in the cytoplasmic domain of tumor necrosis factor receptor 2 (TNFR2) is phosphorylated by unidentified kinase(s) both in vitro and in vivo. This domain (denoted x1c) corresponds almost exactly to the previously identified TRAF-binding domain and is by itself sufficient as a substrate for phosphorylation. In addition, the x1c domain is also crucial for TNFR2-mediated NF-κB activation. The cytoplasmic domain of TNFR2 lacks tyrosines, and conversion of all 12 potential serine and threonine phosphorylation targets in x1c to alanines either had no effect on NF-κB activation or resulted in enhanced NF-κB activity, depending on the structural context of x1c. The results show that while the TRAF-binding domain of TNFR2 is a major target of kinases, its phosphorylation is not required for NF-κB activation. Our data moreover suggest that phosphorylation of x1c negatively regulates the activation of NF-κB.
Source Title: Biochemical and Biophysical Research Communications
URI: http://scholarbank.nus.edu.sg/handle/10635/111985
ISSN: 0006291X
DOI: 10.1006/bbrc.1998.8323
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