|Full Name||X-box binding protein 1|
|Product Description||Rabbit polyclonal antibody to XBP1 (X-box binding protein 1), which recognizes XBP-1U (unspliced), or isoform 1.|
|Background||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]|
|Synonyms||TREB5 antibody, XBP2 antibody, XBP1 antibody, XBP-1 antibody, X-box-binding protein 1 antibody, tax-responsive element-binding protein 5 antibody, X-box binding protein 1 antibody|
|Immunogen||Recombinant protein encompassing a sequence within the center region of human XBP1. The exact sequence is proprietary.|
|Species Reactivity||Human, Mouse, Rat|
|Predicted Cross Reactivity species Predicted cross-reactivity:|
Predicted cross-reactivity is based on sequence homology, with greater than 80% immunogen sequence identity considered positive.
Please note that we are only able to guarantee products to work in applications and species in which they have been tested.
|Pig, Rhesus Monkey, Bovine|
|Predict Reactivity Note||Pig (84%), Rhesus Monkey (98%), Bovine (80%)|