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Invitrogen
Human XBP1 Synthetic Peptide
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Product Details
PEP-0351
Applications
Tested Dilution
Publications
Product Specifications
Species Reactivity
Human
Class
Synthetic
Type
Peptide
Conjugate
Form
Liquid
Concentration
200 µg/mL
Purification
purified
Storage buffer
PBS, pH 7.2, with 0.1% BSA
Contains
0.02% sodium azide
Storage conditions
-20°C
Product Specific Information
This peptide corresponds to 18 amino acids near the amino terminus of human XBP-1.
PEP-0351 can be used as a blocking peptide with polyclonal antibody PA5-20218.
Target Information
XBP1 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.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: OTTHUMP00000028682; Tax-responsive element-binding protein 5; TREB-5; X-box-binding protein 1; XBP-1
Gene Aliases: TREB-5; TREB5; XBP-1; XBP1; XBP2
UniProt ID: (Human) P17861
Entrez Gene ID: (Human) 7494
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