MADD (gene)
Template:Short description Template:Infobox gene MAP kinase-activating death domain protein is an enzyme that in humans is encoded by the MADD gene.[1][2][3] MADD is one out of four of the splice variants of the human IG20 (insulinoma-glucagonoma clone 20) gene[4] which is located on human chromosome 11. [5]
Tumor necrosis factor alpha (TNF-alpha) is a signaling molecule that interacts with one of two receptors on cells targeted for apoptosis. The apoptotic signal is transduced inside these cells by cytoplasmic adaptor proteins. The protein encoded by this gene is a death domain-containing adaptor protein that interacts with the death domain of TNF-alpha receptor 1 to activate mitogen-activated protein kinase (MAPK) and propagate the apoptotic signal. It is membrane-bound and expressed at a higher level in neoplastic cells than in normal cells. Several transcript variants encoding different isoforms have been described for this gene.[3] MADD is mostly expressed in the cell membrane with some cytoplasmic expression in human cells.[6]
References
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- ↑ Al-Zoubi, A. M., Efimova, E. V., Kaithamana, S., Martinez, O., El-Idrissi, M.el-A., Dogan, R. E., & Prabhakar, B. S. (2001). Contrasting effects of IG20 and its splice isoforms, MADD and DENN-SV, on tumor necrosis factor alpha-induced apoptosis and activation of caspase-8 and -3. The Journal of biological chemistry, 276(50), 47202–47211. https://doi.org/10.1074/jbc.M104835200
- ↑ Efimova, E. V., Al-Zoubi, A. M., Martinez, O., Kaithamana, S., Lu, S., Arima, T., & Prabhakar, B. S. (2004). IG20, in contrast to DENN-SV, (MADD splice variants) suppresses tumor cell survival, and enhances their susceptibility to apoptosis and cancer drugs. Oncogene, 23(5), 1076–1087. https://doi.org/10.1038/sj.onc.1207210
- ↑ Chow, V. T., & Lee, S. S. (1996). DENN, a novel human gene differentially expressed in normal and neoplastic cells. DNA sequence : the journal of DNA sequencing and mapping, 6(5), 263–273. https://doi.org/10.3109/10425179609020873
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Further reading
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