Data & Images
|Product Name||Anti-XAF1 Antibody|
|Description||Rabbit IgG polyclonal antibody for XIAP-associated factor 1(XAF1) detection. Tested with WB, IHC-P in Human.|
|Cite This Product||Anti-XAF1 Antibody (Boster Biological Technology, Pleasanton CA, USA, Catalog # PA1218)|
|Replacement Item||This antibody may replace the following items: sc-19193|sc-374378|sc-19194|sc-374020|sc-366039|sc-398012 from Santa Cruz Biotechnology.|
*Our Boster Guarantee covers the use of this product in the above tested applications.
**For positive and negative control design, consult "Tissue specificity" under Protein Target Info.
|Recommended Detection Systems||Boster recommends Enhanced Chemiluminescent Kit with anti-Rabbit IgG (EK1002) for Western blot, and HRP Conjugated anti-Rabbit IgG Super Vision Assay Kit (SV0002-1) for IHC(P).
*Blocking peptide can be purchased at $50. Contact us for more information
**Boster also offers various secondary antibodies for Immunoflourescecne and IHC. Take advantage of the buy 1 primary antibody get 1 secondary antibody for free promotion for the entire year 2017!
|Immunogen||A synthetic peptide corresponding to a sequence at the C-terminus of human XAF1(283-301aa QEKCRWLASSKGKQVRNFS).|
|Cross Reactivity||No cross reactivity with other proteins|
|Contents||Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3.
*carrier free antibody available upon request.
|Concentration||Add 0.2ml of distilled water will yield a concentration of 500ug/ml.|
|Storage||At -20˚C for one year. After reconstitution, at 4˚C for one month. It can also be aliquotted and stored frozen at -20˚C for a longer time.Avoid repeated freezing and thawing.|
|Purification||Immunogen affinity purified.|
Protein Target Info (Source: Uniprot.org)
You can check the tissue specificity below for information on selecting positive and negative control.
|Protein Name||XIAP-associated factor 1|
|Molecular Weight||34626 MW|
|Protein Function||Seems to function as a negative regulator of members of the IAP (inhibitor of apoptosis protein) family. Inhibits anti- caspase activity of BIRC4. Induces cleavage and inactivation of BIRC4 independent of caspase activation. Mediates TNF-alpha- induced apoptosis and is involved in apoptosis in trophoblast cells. May inhibit BIRC4 indirectly by activating the mitochondrial apoptosis pathway. After translocation to mitochondra, promotes translocation of BAX to mitochondria and cytochrome c release from mitochondria. Seems to promote the redistribution of BIRC4 from the cytoplasm to the nucleus, probably independent of BIRC4 inactivation which seems to occur in the cytoplasm. The BIRC4-XAF1 complex mediates down-regulation of BIRC5/survivin; the process requires the E3 ligase activity of BIRC4. Seems to be involved in cellular sensitivity to the proapoptotic actions of TRAIL. May be a tumor suppressor by mediating apoptosis resistance of cancer cells. .|
|Tissue Specificity||Widely expressed. Expression is frequently down-regulated in cancer cell lines. Isoform 5 is widely expressed. Expressed in placenta (at protein level). .|
|Sequence Similarities||Contains 1 TRAF-type zinc finger.|
|Subcellular Localization||Cytoplasm. Nucleus. Mitochondrion. Found in the cytoplasm and nucleus of placental syncytiotrophoblasts. Translocates to mitochondria upon TNF-alpha treatment.|
|Alternative Names||XIAP-associated factor 1;BIRC4-binding protein;XAF1;BIRC4BP, XIAPAF1;|
|Research Areas|||cell biology|apoptosis|intracellular|caspases etc|inhibitors||
Background for XIAP-associated factor 1
Dilution Ratios/Recommended Concentrations
At Boster we strive to provide the best Anti-XAF1 Antibody by testing all applications on non-spiked tissues and cell lines to ensure that the affinity of the antibody is enough to react to the endogenouse level of the target protein. Read more about our QC panel here.
|Recommended dilution ratios are listed below:|
Immunohistochemistry(Paraffin-embedded Section), 0.5-1μg/ml, Human, By Heat|
Western blot, 0.1-0.5μg/ml, Human
**Boster provides high sensitivity secondary antibody kits for Western blotting and IHC. For more info see Related Products below.
Anti-XAF1 Antibody Images
Click the images to enlarge.
IHC(P): Human Endometrial Carcinoma Tissue
All lanes: Anti XAF1 (PA1218) at 0.5ug/ml
Lane 1: HEPG2 Whole Cell Lysate at 40ug
Lane 2: HEPG2 Whole Cell Lysate at 40ug
Predicted bind size: 34KD
Observed bind size: 34KD
1. Post-translational modification:phosphorylation, methylation, glycosylation etc. These modifications prevent SDS molecules from binding to the target protein and thus make the band size appear larger than expected
2. Post-translational cleavage: this can cause smaller bands and or multiple bands
3. Alternative splicing: the same gene can have alternative splicing patterns generating different size proteins, all with reactivities to the antibody.
4. Amino Acid R chain charge: SDS binds to positive charges. The different size and charge of the Amino Acid side chains can affect the amount of SDS binding and thus affect the observed band size.
5. Multimers: Multimers are usually broken up in reducing conditions. However if the interactions between the multimers are strong, the band may appear higher.,