Smac (Second Mitochondria-derived Activator of Caspase, Smac Protein, 0610041G12Rik, DBOH, Direct IAP-binding Protein with Low pI, Diablo, Diablo Homolog (Drosophila), Diablo Homolog, Diablo Homolog Mitochondrial Precursor, DIABLO S, DIABLO-S, FLJ10537, F

Recently, three different laboratories have identified a molecule, Smac/DIABLO, which binds with inhibitor of apoptosis proteins (IAPs) and neutralizes IP inhibition of effector caspases. Multiple IAP molecules, including c-IAP1, c-IAP2, XIAP, and survivin are able to bind Smac. Smac/DIABLO is a mitochondrial protein, which is released into cytosol during apoptosis. The function of Smac is similar to that of Drosophila apoptosis activating proteins Reaper, Hid and Grim, which have been proposed to function by neutralizing the activity of IAPs. Smac promotes caspase-3 and caspase-9 activation by removing inhibitors rather than directly acting on Apaf-1, procaspases, and cytochrome c. The full-length cDNA of Smac encodes an open reading frame of 239 amino acids, predicting a protein with a molecular weight of 27kD. However, the mature protein purified from HeLa cells is only about 25kD (3).\n\nApplications: \nSuitable for use in Western Blot and Immunohistochemistry. Other applications not tested.\n\nRecommended Dilution:\nWestern Blot: 0.5-2ug/ml\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. For long-term storage and to avoid repeated freezing and thawing, add sterile glycerol (40-50%), aliquot and store at -20 degrees C. Aliquots are stable for at least 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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