|Tested species reactivity||Human|
|Host / Isotype||Mouse / IgG1|
|Immunogen||Purified recombinant fragment of human XBP1 expressed in E. Coli.|
|Contains||0.03% sodium azide|
|Storage Conditions||Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.|
|Tested Applications||Dilution *|
|Western Blot (WB)||1/500 - 1/2000|
* Suggested working dilutions are given as a guide only. It is recommended that the user titrate the product for use in their own experiment using appropriate negative and positive controls.
MA5-15626 targets XBP1 in WB applications and shows reactivity with Human samples.
The MA5-15626 immunogen is purified recombinant fragment of human XBP1 expressed in E. Coli.
MA5-15626 detects XBP1 which has a predicted molecular weight of approximately 28kDa.
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 , 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 . The resulting loss of 26 nt from the spliced mRNA causes a frame-shift and an isoform XBP1, which is the functionally active transcription factor. The isoform encoded by the unspliced mRNA, XBP1, is constitutively expressed, and thought to function as a negative feedback regulator of XBP1, 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.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.