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Official Symbol:	XBP1
NCBI Gene ID:	7494
Aliases:	TREB-5 TREB5 XBP-1 XBP2
Official Full Name:	X-box binding protein 1
Species:	human
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, Jul 2008].

 

Buy raPOOLs for XBP1

There is no existing raPOOL for your gene, hence a custom raPOOL set up service is required. Please add this to cart and proceed to choose the raPOOL scale required where 2, 5 or 10 nmol is sufficient for 20, 50 or 100 reactions with the recommended use of 100 pmol raPOOL per reaction.