XBP-1s (E8Y5F) Rabbit mAb #82914
- WB
- F
- ChIP
Supporting Data
| REACTIVITY | M R |
| SENSITIVITY | Endogenous |
| MW (kDa) | 55 |
| Source/Isotype | Rabbit IgG |
Application Key:
- WB-Western Blotting
- F-Flow Cytometry
- ChIP-Chromatin Immunoprecipitation
Species Cross-Reactivity Key:
- M-Mouse
- R-Rat
Product Information
Product Usage Information
For optimal ChIP results, use 10 μl of antibody and 10 μg of chromatin (approximately 4 × 10^6 cells) per IP. This antibody has been validated using SimpleChIP® Enzymatic Chromatin IP Kits
| Application | Dilution |
|---|---|
| Western Blotting | 1:1000 |
| Flow Cytometry (Fixed/Permeabilized) | 1:400 - 1:1600 |
| Chromatin IP | 1:50 |
Storage
Protocol
Specificity / Sensitivity
XBP-1s (E8Y5F) Rabbit mAb recognizes endogenous levels of total XBP-1s protein.
Species Reactivity:
Mouse, Rat
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro290 of mouse XBP-1s protein.
Background
Following protein synthesis, secretory, intra-organellar, and transmembrane proteins translocate into the endoplasmic reticulum (ER) where they are post-translationally modified and properly folded. The accumulation of unfolded proteins within the ER triggers an adaptive mechanism known as the unfolded protein response (UPR) that counteracts compromised protein folding (1). The transmembrane serine/threonine kinase IRE1, originally identified in Saccharomyces cerevisiae, is a proximal sensor for the UPR that transmits the unfolded protein signal across the ER membrane (2-4). The human homolog IRE1α was later identified and is ubiquitously expressed in human tissues (5). Upon activation of the unfolded protein response, IRE1α splices X-box binding protein 1 (XBP-1) mRNA through an unconventional mechanism using its endoribonuclease activity (6). This reaction converts XBP-1 from an unspliced XBP-1u isoform to the spliced XBP-1s isoform, which is a potent transcriptional activator that induces expression of many UPR responsive genes (6).
Limited Uses
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