The XBP1 Antibody (CAB1731) is a high-quality antibody developed for reliable detection and analysis of target proteins. 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.
This antibody is validated for use in WB, IF/ICC, ELISA applications and has demonstrated reactivity against Human, Mouse, Rat samples.
Product Name:
XBP1 Antibody
SKU:
CAB1731
Size:
100μL, 20μL
Reactivity:
Human, Mouse, Rat
Conjugate:
Unconjugated
Immunogen:
Recombinant protein (or fragment).This information is considered to be commercially sensitive.
Tested Applications:
WBIF/ICCELISA
Recommended Dilution:
WB
1:500 - 1:2000
IF/ICC
1:50 - 1:200
ELISA
Recommended starting concentration is 1 μg/mL. Please optimize the concentration based on your specific assay requirements.
Synonyms:
XBP2, TREB5, XBP-1, TREB-5, XBP1
Positive Sample:
Mouse spleen
Cellular Localization:
Cytoplasm, Endoplasmic Reticulum Membrane, Endoplasmic Reticulum, Membrane, Nucleus, Peripheral Membrane Protein, Single-Pass Type Ii Membrane Protein.
Calculated MW:
29kDa
Observed MW:
60kDa
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.
Purification Method
Affinity purification
Gene ID
7494
RRID
AB_2763779
Buffer Information
Store at -20℃. Avoid freeze / thaw cycles. Buffer: PBS containing 50% glycerol, preserved with proclin300 or sodium azide, pH 7.3.
Western blot analysis of lysates from Mouse spleen, using XBP1 Rabbit pAb (CAB1731) at 1:1000 dilution. Secondary antibody: HRP-conjugated Goat anti-Rabbit IgG (H+L) (AS014) at 1:10000 dilution. Lysates/proteins: 25μg per lane. Blocking buffer: 3% nonfat dry milk in TBST. Detection: ECL Basic Kit (AbGn00020). Exposure time: 90s.
Immunofluorescence analysis of NIH/3T3 cells using XBP1 Rabbit pAb (CAB1731) at dilution of 1:100 (40x lens).Secondary antibody: Cy3-conjugated Goat anti-Rabbit IgG (H+L) (AS007) at 1:500 dilution. Blue: DAPI for nuclear staining.
