XBP1 Mouse Monoclonal Antibody [Clone ID: 1C4]

Specifications

Product Data
Clone Name	1C4
Applications	ELISA, WB
Recommend Dilution	Western Blot: 1/500 - 1/2000. ELISA: 1/10000.
Reactivity	Human
Host	Mouse
Clonality	Monoclonal
Immunogen	Purified recombinant fragment of human XBP1 expressed in E. Coli.
Specificity	This antibody reacts to XBP1.
Formulation	State: Ascites State: Ascitic fluid containing 0.03% sodium azide.
Conjugation	Unconjugated
Storage Condition	Store the antibody undiluted at 2-8°C for one month or (in aliquots) at -20°C for longer. Avoid repeated freezing and thawing.
Predicted Protein Size	28 kDa
Gene Name	X-box binding protein 1
Database Link	Entrez Gene 7494 Human UniProt ID P17861
Background	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.
Synonyms	XBP-1, XBP2
Reference Data

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