Anti-XBP1 antibody produced in rabbit
SIGMA/SAB2102720 - affinity isolated antibody
Synonym: Anti-TREB5; Anti-X-box binding protein 1; Anti-XBP2
Product Type: Chemical
Immunoblotting Anti-XBP1: Cat. No.SAB2102720: XBP1 in Jurkat cell lysate with XBP1 antibody at 1.0 μg/mL.
Immunoblotting XBP1: Cat. No. SAB2102720: Western blot analysis of XBP1 in Human MCF7 cell lysates with XBP1 antibody at 1.0 μg/mL.
| antibody form | affinity isolated antibody |
| antibody product type | primary antibodies |
| biological source | rabbit |
| clone | polyclonal |
| concentration | 0.5 mg - 1 mg/mL |
| conjugate | unconjugated |
| form | buffered aqueous solution |
| mol wt | 29 kDa |
| Quality Level | 100  |
| shipped in | wet ice |
| species reactivity | human, bovine |
| storage temp. | −20°C |
| target post-translational modification | unmodified |
| technique(s) | western blot: suitable |
| UniProt accession no. | P17861  |
| Biochem/physiol Actions: | XBP1 is a transcription factor that regulates MHC class II genes by binding to a promoter element referred to as an X box. XBP1 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. 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. |
| Disclaimer: | Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals. |
| Immunogen: | Synthetic peptide directed towards the C terminal region of human XBP1 |
| Other Notes: | Synthetic peptide located within the following region: TQSCSSNALPQSLPAWRSSQRSTQK |
| Physical form: | Purified antibody supplied in 1x PBS buffer with 0.09% (w/v) sodium azide and 2% sucrose. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Storage Temp. | −20°C |
| UNSPSC | 12352203 |