Anti-XBP1 Antibody Picoband®

SKU: PB9463

Size: 100 μg

Storage: Store at -20℃ for one year from date of receipt. After reconstitution, at 4℃ for one month. It can also be aliquotted and stored frozen at -20℃ for six months. Avoid repeated freeze-thaw cycles.

Form: Lyophilized

Reactivity: Human,Mouse,Rat

Applications: Flow Cytometry,IF,IHC,ICC,WB

Application Details: Western blot, 0.1-0.5μg/ml, Human
Immunohistochemistry (Paraffin-embedded Section), 0.5-1μg/ml, Human, Mouse, Rat
Immunocytochemistry/Immunofluorescence, 2μg/ml, Human
Flow Cytometry (Fixed), 1-3μg/1x10⁶ cells, Human

Gene Name: XBP1

Specificity: No cross reactivity with other proteins.

Background: XBP1, also known as X-box binding protein 1, is a protein which in humans is encoded by the XBP1 gene. It encodes a transcription factor that regulates MHC class II genes by binding to a promoter element referred to as an X box. This gene product is a bZIP protein, which was also identified as a cellular transcription factor that binds to an enhancer in the promoter of the T cell leukemia virus type 1 promoter. It may increase expression of viral proteins by acting as the DNA binding partner of a viral transactivator. It has been found that upon accumulation of unfolded proteins in the endoplasmic reticulum (ER), the mRNA of this gene is processed to an active form by an unconventional splicing mechanism that is mediated by the endonuclease inositol-requiring enzyme 1 (IRE1). The resulting loss of 26 nt from the spliced mRNA causes a frame-shift and an isoform XBP1 (S), which is the functionally active transcription factor. The isoform encoded by the unspliced mRNA, XBP1 (U), is constitutively expressed, and thought to function as a negative feedback regulator of XBP1 (S), which shuts off transcription of target genes during the recovery phase of ER stress. A pseudogene of XBP1 has been identified and localized to chromosome 5.

Immunogen: A synthetic peptide corresponding to a sequence at the N-terminus of human XBP1, identical to the related mouse and rat sequences.

Clonality: Polyclonal

Contents: Each vial contains antibody formulated with stabilizing components, 0.9 mg NaCl, 0.2 mg Na2HPO4, and 0.05 mg NaN3.
*This antibody is supplied in a stabilized formulation.
Compatibility with conjugation reactions depends on the chemistry of the conjugation method used.
For conjugation methods that are not compatible with the stabilizing components present in this formulation, a carrier-free antibody format is required.

Purification: Immunogen affinity purified.

Reconstitution: Add 0.2ml of distilled water will yield a concentration of 500ug/ml.

Reference: 1. Entrez Gene: XBP1 X-box binding protein 1. 2. Ono SJ, Liou HC, Davidon R, Strominger JL, Glimcher LH (May 1991). Human X-box-binding protein 1 is required for the transcription of a subset of human class II major histocompatibility genes and forms a heterodimer with c-fos. Proc. Natl. Acad. Sci. U.S.A. 88 (10): 4309–12. 3. Yoshida H, Nadanaka S, Sato R, Mori K (2006). XBP1 is critical to protect cells from endoplasmic reticulum stress: evidence from Site-2 protease-deficient Chinese hamster ovary cells. Cell Structure and Function 31 (2): 117–25.

Uniprot ID: P17861

Host: Rabbit

Concentration: Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.

Conjugate: This is the unconjugated antibody. It is also available with 10 conjugation options, including Biotin, Cy3, Fluoro488, Fluoro550, Fluoro594, FITC, HRP, APC, PE, and Fluoro647. A carrier-free (BSA-free) version is also available. Additional charges may apply for some options. Please contact us for a quote

Cross Reactivity: No cross-reactivity with other proteins

Isotype: Rabbit IgG

Phospho_site:

Clone Number:

Observed Molecular Weight: 29 kDa

Calculated Molecular Weight: 28695 MW

Gene ID: 7494

Protein Name: X-box-binding protein 1

Gene Full Name: X-box binding protein 1

Synonyms: TREB5; X box binding protein 1; XBP 1; XBP1; XBP1s; XBP-1S; XBP1U; XBP2