Thermo Fisher Scientific XBP1 Monoclonal Antibody (1C4)

Applications

Tested Dilution

Publications

Western Blot (WB)

1:500-1:2,000

-

ELISA (ELISA)

1:10,000

-

Product Specifications

Species Reactivity

Human

Host/Isotype

Mouse / IgG1

Class

Monoclonal

Type

Antibody

Clone

1C4

Immunogen

Purified recombinant fragment of human XBP1 expressed in E. Coli.

Conjugate

Unconjugated Unconjugated Unconjugated

Form

Liquid

Concentration

Conc. Not Determined

Storage buffer

ascites

Contains

0.03% sodium azide

Storage conditions

Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.

Shipping conditions

Wet ice

RRID

AB_11009137

Product Specific Information

MA5-15626 targets XBP1 in indirect ELISA, WB applications and shows reactivity with Human samples.

The MA5-15626 immunogen is purified recombinant fragment of human XBP1 expressed in E. Coli.

MA5-15626 detects XBP1 which has a predicted molecular weight of approximately 28kDa.

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.