Basic information

Full name
X-box binding protein 1
Ensembl
ENSG00000100219.16
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]
Annotation
Transcription factor

Protein product

Phosphosites on the primary protein product
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Tumor and normal comparison

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Signed p-values
Data type
Meta P
BRCA
CCRCC
COAD
GBM
HNSCC
LSCC
LUAD
OV
PDAC
UCEC
RNA1.3e-10-1.5e-13--0.683.1e-32.4e-16--4.5e-6-
protein-----------

* P-values are from Wilcoxon rank sum test and can be clicked to show the box plots. Positive values mean higher abundance in tumor. BRCA and GBM do not have normal samples.

mRNA expression at gene level
BRCACCRCCCOADGBMHNSCCLSCCLUADOVPDACUCEC9101112131415161718log2(RSEM+1)tumornormal
Protein expression
BRCALSCCLUADPDACUCEC1213141516171819202122log2(MS1 intensity)tumornormal

* Mild outlier: filled circle; Extreme outlier: empty circle.

Phenotype and mutation association

Manhattan plot summarizing associations of phenotypes and mutations across all cohorts and omics data types

BRCACCRCCCOADGBMHNSCCLSCCLUADOVPDACUCEC0246810121416182022242628300-2-4-6-8-10-12-14-16-18-20-22-24-26-28-30Pan-cancer0510152025303540450-5-10-15-20-25-30-35-40-45proteinRNASCNVclinicalpathwaycell typegenomicmutation-log10 of P-value

* Data points of significant associations above and below the dotted lines can be hovered to show the phenotype.

Associations of the protein abundance of XBP1 with phenotypes and mutations

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Signed p-values
Phenotype
Meta P
BRCA
CCRCC
COAD
GBM
HNSCC
LSCC
LUAD
OV
PDAC
UCEC
HALLMARK_ADIPOGENESIS2.3e-30.46----0.002---0.15
cibersort: T cell gamma delta0.0110.011---------
Clinical: Stage0.0560.056---------
xcell: B cell memory0.0580.94----0.069---0.17
HALLMARK_PEROXISOME0.060.03----9.8e-3----0.14
HALLMARK_XENOBIOTIC_METABOLISM0.0830.59----5.6e-3----0.75
HALLMARK_ESTROGEN_RESPONSE_LATE0.0976.5e-3----0.23----0.3
xcell: Neutrophil0.120.31----0.13---0.89
HALLMARK_ESTROGEN_RESPONSE_EARLY0.120.002----0.41----0.21
PIK3CA mutation0.120.12---------
Showing 1 to 10 of 256 rows

* P-values could be from test for Spearman correlation, Wilcoxon rank sum test, Jonckheere-Terpstra trend test or Cox regression depending on the data type. P-values for individual cohorts can be clicked to show the data plots. The matrix icons in each row can be clicked to show a heatmap summary of associations across all cohorts and omics. The rows in the table can be expanded to show results from other omics.

Cis-association

Associations between omics data of XBP1

BRCA0.580.070.04proteinmRNASCNVmethylationCCRCC-0.160.12-0.03proteinmRNASCNVmethylationCOAD0.28proteinmRNASCNVmethylationGBM0.120.19-0.03proteinmRNASCNVmethylationHNSCC-0.050.260.23proteinmRNASCNVmethylationLSCC0.890.420.26-0.09-0.01-0.02proteinmRNASCNVmethylationLUAD-0.100.39-0.03proteinmRNASCNVmethylationOV0.36proteinmRNASCNVmethylationPDAC-0.020.160.06proteinmRNASCNVmethylationUCEC-0.120.32-0.050.140.190.16proteinmRNASCNVmethylation

* The numbers are Spearman correlation coefficients and can be clicked to show the scatter plots. The color and size of the circles correlate with the coefficients.

Trans-association

Associations of the protein abundance of XBP1 and the protein abundance of other genes

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Signed p-values
Gene
Meta P
BRCA
CCRCC
COAD
GBM
HNSCC
LSCC
LUAD
OV
PDAC
UCEC
No matching records found

* P-values are from test for Spearman correlation. P-values for individual cohorts can be clicked to show the data plots. The matrix icons in each row can be clicked to show a heatmap summary of associations across all cohorts and omics. The rows in the table can be expanded to show results from other omics.

Gene set enrichment analysis

Submit genes and the common logarithm of the p-values of their association with to WebGestalt.