XBP1 antibody (N-Term)

Catalog No. ABIN3043963

This Rabbit Polyclonal antibody specifically detects XBP1 in WB, IHC, FACS, IF and ICC. It exhibits reactivity toward Human, Mouse and Rat.

Quick Overview for XBP1 antibody (N-Term) (ABIN3043963)

Target: XBP1 (X-Box Binding Protein 1 (XBP1))

Reactivity: Human, Mouse, Rat

Host: Rabbit

Clonality: Polyclonal

Conjugate: This XBP1 antibody is un-conjugated

Application: Western Blotting (WB), Immunohistochemistry (IHC), Flow Cytometry (FACS), Immunofluorescence (IF), Immunocytochemistry (ICC)

Product Details anti-XBP1 Antibody

Binding Specificity: AA 59-85, N-Term

Purpose: Anti-XBP1 Antibody Picoband®

Sequence: RKRQRLTHLS PEEKALRRKL KNRVAAQ

Cross-Reactivity (Details): No cross-reactivity with other proteins

Characteristics: Anti-XBP1 Antibody Picoband® (ABIN3043963). Tested in Flow Cytometry, IF, IHC, ICC, WB applications. This antibody reacts with Human, Mouse, Rat. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance.

Purification: Immunogen affinity purified.

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

Isotype: IgG

Application Details

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

Comment:

Antibody can be supported by chemiluminescence kit ABIN921124 in WB, supported by ABIN921231 in IHC(P).

Restrictions: For Research Use only

Handling

Format: Lyophilized

Reconstitution: Add 0.2 mL of distilled water will yield a concentration of 500 μg/mL.

Concentration: 500 μg/mL

Buffer: Each vial contains 5 mg BSA, 0.9 mg NaCl, 0.2 mg Na2HPO4, 0.05 mg Sodium azide.

Preservative: Sodium azide

Precaution of Use: This product contains Sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.

Handling Advice: Avoid repeated freezing and thawing.

Storage: 4 °C,-20 °C

Storage Comment: 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.

Target Details for XBP1

Target: XBP1 (X-Box Binding Protein 1 (XBP1))

Alternative Name: XBP1

Background:

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 ,

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). .

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.

Sequence Similarities: Belongs to the bZIP family.

Molecular Weight: 29 kDa

Gene ID: 7494

UniProt: P17861

Pathways: ER-Nucleus Signaling, Unfolded Protein Response