SAB1404531

Monoclonal Anti-XBP1 antibody produced in mouse

clone 2D9, purified immunoglobulin, buffered aqueous solution

• Synonym(s): TREB5, XBP2
• UNSPSC Code: 12352203
• NACRES: NA.41

Properties

• biological source: mouse
• conjugate: unconjugated
• antibody form: purified immunoglobulin
• antibody product type: primary antibodies
• clone: 2D9, monoclonal
• form: buffered aqueous solution
• mol wt: antigen ~37.33 kDa
• species reactivity: human
• technique(s): capture ELISA: suitable; indirect ELISA: suitable; western blot: 1-5 μg/mL
• isotype: IgG2aκ
• NCBI accession no.: BC012841
• UniProt accession no.: P17861
• shipped in: dry ice
• storage temp.: −20°C
• target post-translational modification: unmodified
• Gene Information: human ... XBP1(7494)

Description

General description

This gene 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. (provided by RefSeq)

Immunogen

XBP1 (AAH12841, 123 a.a. ~ 225 a.a) partial recombinant protein with GST tag. MW of the GST tag alone is 26 KDa.

Sequence
THGLVVENQELRQRLGMDALVAEEEAEAKGNEVRPVAGSAESAALRLRAPLQQVQAQLSPLQNISPWILAVLTLQIQSLISCWAFWTTWTQSCSSNALPQSLP

Physical form

Solution in phosphate buffered saline, pH 7.4

Safety Information

• Storage Class: 10 - Combustible liquids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable