Smac Antibody

Smac Antibody: The inhibitor of apoptosis proteins (IAPs) regulate programmed cell death by inhibiting members of the caspase family of enzymes. A novel mammalian protein that binds to IAPs and neutralizes the inhibitory effect of IAPs on caspases was recently identified and designated Smac/DIABLO. Smac/DIABLO is a mitochondrial protein that is released along with cytochrome c during apoptosis and activates cytochrome c/Apaf-1/capase-9 pathway. Analysis of the structural basis of Smac/DIABLO reveals that the N-terminal amino acids are required for binding of Smac/DIABLO to IAPs and activation of caspases. Smac/DIABLO is expressed in a variety of human and mouse tissues.

Independent Antibody Validation in Cell lines (Figure 2) shows similar Smac expression profile in human and mouse cell lines detected by two independent anti-Smac antibodies that recognize different epitopes, 2409 against human C-terminus domain and 2411 against murine C-terminus domain. Smac proteins are detected in the most tested cell lines at different expression levels by the two independent antibodies. Independent Antibody Validation in Cell lines2409 2411 KO Validation (Figure 6) : Anti-Smac antibody specificity was further verified by Smac knockout mice. Smac signal smac KO mice was disrupted as compared to control. KO Validation Induced Expression Validation (Figure 6,9) : Smac expression detected by anit-Smac antibodies was up-regulated by STS or rPVL treatment. Induced Expression Validation Overexpression Validation (Figure 10) : Smac overexpression was detected by anit-Smac antibodies on smac transfected HEK293T cells. Overexpression Validation

Smac antibody can be stored at 4˚ C for three months and -20˚ C, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.

Human Smac has 3 isoforms, including isoform 1 (239aa, 27.1kD), isoform 2 (186aa, 21.2kD), and isoform 3 (195aa, 22.3kD) . Mouse Smac has one isoform (237aa, 26.8kD) and Rat Smac also has one isoform (237aa, 26.9kD) . 2409 can detect human, mouse and rat Smac.