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GENE AND PROTEIN SUMMARY

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Gene name

TAB1

Description

TGF-beta activated kinase 1/MAP3K7 binding protein 1

Protein class

Mapped to UniProt SWISS-PROT

Protein evidence

Medium

Entrez gene summary

The protein encoded by this gene was identified as a regulator of the MAP kinase kinase kinase MAP3K7/TAK1, which is known to mediate various intracellular signaling pathways, such as those induced by TGF beta, interleukin 1, and WNT-1. This protein interacts and thus activates TAK1 kinase. It has been shown that the C-terminal portion of this protein is sufficient for binding and activation of TAK1, while a portion of the N-terminus acts as a dominant-negative inhibitor of TGF beta, suggesting that this protein may function as a mediator between TGF beta receptors and TAK1. This protein can also interact with and activate the mitogen-activated protein kinase 14 (MAPK14/p38alpha), and thus represents an alternative activation pathway, in addition to the MAPKK pathways, which contributes to the biological responses of MAPK14 to various stimuli. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

4 in total
0 with predicted TM region
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Pending subcellular analysis

NORMAL TISSUE & ORGAN SUMMARY

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Show image »

Staining summary

Most normal tissues showed weak to moderate nuclear and cytoplasmic positivity. Strong immunoreactivity was observed in Hofbauer cells in placenta. The liver, fallopian tubes, glandular cells in uterine cervix and renal glomeruli were in general negative.

Tissue specificity

Staining in 65 out of 80 cell types

Reliability (Single)

Antibodies in assay

CAB032328
 

Organ

No of cell types

Antibody staining

CNS (brain) 11
Hematopoietic (blood) 7
Liver and pancreas 5
Digestive (GI-tract) 13
Respiratory (lung) 4
Cardiovascular 1
Female tissues 13
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 13
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 69% of the cancers

Antibodies in assay

CAB032328
 

Tissue

Cancer staining

Normal tissue
staining

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 

Tissue

Cancer staining

Normal tissue
staining

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Level of antibody staining





Strong
Moderate
Weak
Negative

CELL LINE SUMMARY

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RNA evidence

Medium
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

A-431 Skin Medium

-

-

A-549 Lung Medium

-

-

CACO-2 Colon Medium

-

-

HEK 293 Embryonal kidney Medium

-

-

HeLa Cervix Medium

-

-

Hep-G2 Liver Medium

-

-

MCF-7 Pleural effusion Medium

-

-

PC-3 Bone marrow Medium

-

-

RT-4 Urinary bladder Medium

-

-

U-2 OS Bone Medium

-

-

U-251 MG Brain Medium

-

-

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB032328 pAb