|Tested species reactivity||Human|
|Host / Isotype||Rabbit / IgG|
|Immunogen||A synthetic peptide corresponding to 16 amino acids near the middle of human XAF-1.|
|Purification||Antigen affinity chromatography|
|Contains||0.02% sodium azide|
|Storage Conditions||Maintain refrigerated at 2-8°C for up to 3 months. For long term storage store at -20°C|
|Tested Applications||Dilution *|
|Immunocytochemistry (ICC)||20 ug/ml|
|Immunofluorescence (IF)||20 ug/ml|
|Western Blot (WB)||1-4 µg/ml|
* Suggested working dilutions are given as a guide only. It is recommended that the user titrate the product for use in their own experiment using appropriate negative and positive controls.
This antibody recognizes multiple isoforms of XAF-1.
In Western blot applications, a doublet is detected at ~30kDa. A suggested positive control is human spleen tissue lysate.
PA5-20090 can be used with blocking peptide PEP-0208.
XAF-1 binds to XIAP, an inhibitor of caspases-3, -7, and -9, and triggers its relocation from the cytosol to the nucleus. Overexpression of XAF-1 results in the neutralization of XIAP and quote;s ability to inhibit cell death. XAF-1 is normally expressed in all adult and fetal tissues but was found to be present in very low levels in a variety of cancer cell lines. In contrast, XIAP levels have been shown to be high in a majority of cell lines. Low XAF-1 and high basal expression of XIAP may therefore play a critical role in maintaining survival of cancer cell lines. Both IFN-alpha2 and IFN-beta can induce XAF-1 mRNA in all cells examined but induction of XAF-1 protein (as observed by immunoblot analysis) was seen only in cell lines sensitive to the apoptotic effects of IFNs.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.