Product Type: Antibody
Descritpion: 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.
Research Areas: Cancer, Epigenetics and Nuclear Signaling
Recommended Dilutions: IHC 1:50-1:200
Size: 200 uL
Gene Accession: BC000938
Immunogen: Recombinant protein of human XBP1
Formulation: PBS with 0.05% sodium azide, 50% glycerol, PH7.3
Purification: Affinity purification
Tissue Specificity/Positive Control: 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).
Cellular Localization: Nucleus.
Storage: Store at -20C. Avoid freeze / thaw cycles.