Anti-XBP1 Antibody Picoband™ | Boster PB9463 product information

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product summary

company name :

Boster

product type :

antibody

product name :

Anti-XBP1 Antibody Picoband™

catalog :

PB9463

quantity :

100μg/vial

clonality :

polyclonal

host :

domestic rabbit

conjugate :

nonconjugated

reactivity :

human, mouse, rat

application :

western blot, immunocytochemistry, flow cytometry, immunohistochemistry - paraffin section

product information

SKU :

PB9463

Product Name :

Anti-XBP1 Antibody Picoband™

Size :

100μg/vial

Clonality :

Polyclonal

Host :

Rabbit

Reactivity :

Human, Mouse, Rat

Predicted Reactivity :

Hamster

Application(s) :

Flow Cytometry, IF, IHC-P, ICC, WB

Application Details :

Western blot, 0.1-0.5µg/ml, Human. Immunohistochemistry (Paraffin-embedded Section), 0.5-1µg/ml, Human, Mouse, Rat, By Heat. Immunocytochemistry/Immunofluorescence, 2µg/ml, Human. Flow Cytometry, 1-3µg/1x10^6 cells, Human.

Application Notes :

WB: The detection limit for XBP1 is approximately 0.1ng/lane under reducing conditions. Tested Species: In-house tested species with positive results. By Heat: Boiling the paraffin sections in 10mM citrate buffer, pH6.0, for 20mins is required for the staining of formalin/paraffin sections. Other applications have not been tested. Optimal dilutions should be determined by end users.

Description :

Boster Bio Anti-XBP1 Antibody Picoband™ catalog # PB9463. Tested in Flow Cytometry, IF, IHC-P, ICC, WB applications. This antibody reacts with Human, Mouse, Rat.

Concentration :

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

Gene Name :

XBP1

Uniprot ID :

P17861

Immunogen :

A synthetic peptide corresponding to a sequence at the N-terminus of human XBP1 (59-85 aa RKRQRLTHLSPEEKALRRKLKNRVAAQ), identical to the related mouse and rat sequences.

Form :

Lyophilized

Contents :

Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg NaN3.

Purification :

Immunogen affinity purified.

Cross-reactivity :

No cross reactivity with other proteins

Storage :

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

Reconstitution :

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

Gene Full Name :

X-box-binding protein 1

Synonyms :

X-box-binding protein 1 ; XBP-1 ; Tax-responsive element-binding protein 5 ; TREB-5 ; X-box-binding protein 1, cytoplasmic form ; X-box-binding protein 1, luminal form ; XBP1 ; TREB5 , XBP2 ;

Protein Name :

X-box-binding protein 1

Molecular Weight :

28695 MW

Protein Function :

Functions as a transcription factor during endoplasmic reticulum (ER) stress by regulating the unfolded protein response (UPR). Required for cardiac myogenesis and hepatogenesis during embryonic development, and the development of secretory tissues such as exocrine pancreas and salivary gland (By similarity). Involved in terminal differentiation of B lymphocytes to plasma cells and production of immunoglobulins (PubMed:11460154). Modulates the cellular response to ER stress in a PIK3R-dependent manner (PubMed:20348923). Binds to the cis-acting X box present in the promoter regions of major histocompatibility complex class II genes (PubMed:8349596). Involved in VEGF-induced endothelial cell (EC) proliferation and retinal blood vessel formation during embryonic development but also for angiogenesis in adult tissues under ischemic conditions. Functions also as a major regulator of the UPR in obesity-induced insulin resistance and type 2 diabetes for the management of obesity and diabetes prevention (By similarity).

Subcellular Localization :

Endoplasmic reticulum. Colocalizes with ERN1 and KDR in the endoplasmic reticulum in endothelial cells in a vascular endothelial growth factor (VEGF)-dependent manner (PubMed:23529610).

Tissue Specificity :

Expressed in plasma cells in rheumatoid synovium (PubMed:11460154). Over-expressed in primary breast cancer and metastatic breast cancer cells (PubMed:25280941). Isoform 1 and isoform 2 are expressed at higher level in proliferating as compared to confluent quiescent endothelial cells (PubMed:19416856).

Recommended Detection Systems :

Boster provides a series of assays reacted with primary antibodies. Antibody can be supported by chemiluminescence kit EK1002 in WB, supported by SA1022 in IHC(P) and ICC.

Sequence Similarities :

Belongs to the bZIP family.

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.

Research Category :

Epigenetics and Nuclear Signaling, Transcription, Transcription Factors