SODD (Silencer of Death Domains, BAG Family Molecular Chaperone Regulator 4, BCL2-associated Athanogene 4, BAG4, BAG-4, DKFZp586O2022)

Several cell surface receptors that are involved in apoptosis contain intracellular death domains and are capable of triggering apoptosis when activated by their respective ligands (1). Due to presence of these death domains and presence of various stimuli in the serum as well as overexpression leading to receptor oligomerization, which leads to constitutive activation of the apoptotic pathway, it has been extremely difficult to generate permanent cell lines overexpressing specific receptors in culture. However, in normal states, this death domain activity is silenced presumably due to presence of other cellular factors. SODD (Silencer of Death Domain), a DR3 associated protein, was isolated by yeast two-hybrid interaction assays (2). SODD associates with the intracellular domains of TNF-R1, but not with those of TNF-R2, Fas, DR4, or DR5. Overexpression has been found to suppress the TNF induced cell death as well as NF-kB activation (2). SODD may act as a negative regulatory protein that is normally associated with death domain of TNF-R1 and probably inhibit self-oligomerization properties of death domain and maintain TNF-R1 in an inactive, monomeric state.\n\nApplications:\nSuitable for use in Western Blot. Other applications not tested.\n\nRecommended Dilution:\nWestern Blot: 0.5-2ug/ml\nOptimal dilutions to be determined by the researcher.\n\nPositive Control:\nHeLa cell lysate\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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