XBP1 polyclonal antibody
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Specification
Product Description
Goat polyclonal antibody raised against synthetic peptide of XBP1.
Immunogen
A synthetic peptide corresponding to human XBP1.
Sequence
C-NHSWEDTFANELFPQ
Host
Goat
Theoretical MW (kDa)
40.1, 28.7
Reactivity
Human
Specificity
This antibody is expected to recognize isoform XBP1(S) (NP_001073007.1) only.
Form
Liquid
Purification
Antigen affinity purification
Concentration
0.5 mg/mL
Quality Control Testing
Antibody Reactive Against Synthetic Peptide.
Recommend Usage
ELISA (1:4000)
Western Blot (1-3 ug/mL)
The optimal working dilution should be determined by the end user.Storage Buffer
In Tris saline, pH 7.3 (0.5% BSA, 0.02% sodium azide)
Storage Instruction
Store at -20°C.
Aliquot to avoid repeated freezing and thawing.Note
This product contains sodium azide: a POISONOUS AND HAZARDOUS SUBSTANCE which should be handled by trained staff only.
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Applications
Western Blot (Cell lysate)
XBP1 polyclonal antibody (Cat # PAB7472) (1 ug/mL) staining of nuclear HeLa lysate (35 ug protein in RIPA buffer). Primary incubation was 1 hour. Detected by chemiluminescence.Enzyme-linked Immunoabsorbent Assay
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Gene Info — XBP1
Entrez GeneID
7494Protein Accession#
NP_001073007.1Gene Name
XBP1
Gene Alias
TREB5, XBP2
Gene Description
X-box binding protein 1
Gene Ontology
HyperlinkGene Summary
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
Other Designations
OTTHUMP00000028682|X-box-binding protein-1
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Interactome
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Disease
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Publication Reference
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Involvement of selective reactive oxygen species upstream of proapoptotic branches of unfolded protein response.
Yokouchi M, Hiramatsu N, Hayakawa K, Okamura M, Du S, Kasai A, Takano Y, Shitamura A, Shimada T, Yao J, Kitamura M.
The Journal of Biological Chemistry 2008 Feb; 283(7):4252.
Application:WB-Tr, Pig, LLC-PK1 cells.
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Involvement of selective reactive oxygen species upstream of proapoptotic branches of unfolded protein response.
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