Scientific background: |
TRAF2 (TNF Receptor-Associated Factor 2), also called TRAP, is a protein that in humans is encoded by the TRAF2 gene. The protein encoded by this gene is a member of the TNF receptor (TNFR) associated factor (TRAF) protein family. TRAF2 is a common signal transducer for TNFR2 and CD40 that mediates activation of NF-kappa-B. Rothe et al. (1996) identified ITRAF, which binds to TRAF1, TRAF2, and TRAF3, and that when overexpressed inhibits TRAF2-mediated NF-kappa-B activation. They proposed that ITRAF is an inhibitor of TRAF function that regulates TRAF protein activity by sequestering TRAFs in a latent state in the cytoplasm. Kanamori et al. (2002) found that mouse Traf2 interacted directly with T2bp, and they presented evidence that T2BP is involved in TNF-mediated signaling by its interaction with TRAF2. |
References: |
1. Aizawa, S., Nakano, H., Ishida, T., Horie, R., Nagai, M., Ito, K., Yagita, H., Okumura, K., Inoue, J., Watanabe, T. Tumor necrosis factor receptor-associated factor (TRAF) 5 and TRAF2 are involved in CD30-mediated NF-kappa-B activation. J. Biol. Chem. 272: 2042-2045, 1997.
2. Kanamori, M., Suzuki, H., Saito, R., Muramatsu, M., Hayashizaki, Y. T2BP, a novel TRAF2 binding protein, can activate NF-kappa-B and AP-1 without TNF stimulation. Biochem. Biophys. Res. Commun. 290: 1108-1113, 2002.
3. Rothe, M., Xiong, J., Shu, H.-B., Williamson, K., Goddard, A., Goeddel, D. V. I-TRAF is a novel TRAF-interacting protein that regulates TRAF-mediated signal transduction. Proc. Nat. Acad. Sci. 93: 8241-8246, 1996.
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