XBP1 (NM_001079539) Human Recombinant Protein

CAT#: TP761630

Purified recombinant protein of Human X-box binding protein 1 (XBP1), transcript variant 2, full length, with N-terminal GST and C-terminal HIS tag, expressed in E. coli, 50ug


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USD 215.00

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Size
    • 50 ug

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Specifications

Product Data
Species Human
Expression Host E. coli
Expression cDNA Clone or AA Sequence
A DNA sequence encoding human full-length XBP1
Tag N-GST and C-His
Predicted MW 68 kDa
Concentration >50 ug/mL as determined by microplate BCA method
Purity > 80% as determined by SDS-PAGE and Coomassie blue staining
Buffer 25mM Tris, pH8.0,150mM NaCl,10% glycerol,1%Sarkosyl.
Storage Store at -80°C.
Stability Stable for 12 months from the date of receipt of the product under proper storage and handling conditions. Avoid repeated freeze-thaw cycles.
Reference Data
RefSeq NP_001073007
Locus ID 7494
UniProt ID P17861
Cytogenetics 22q12
Refseq Size 1810
Refseq ORF 1128
Synonyms TREB-5; TREB5; XBP-1; XBP2
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]'
Protein Families Transcription Factors

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