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GENE AND PROTEIN SUMMARY

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Gene name

ARHGEF4

Description

Rho guanine nucleotide exchange factor (GEF) 4

Protein class

Mapped to UniProt SWISS-PROT, SH3-domain containing proteins

Protein evidence

High

Entrez gene summary

Rho GTPases play a fundamental role in numerous cellular processes that are initiated by extracellular stimuli that work through G protein coupled receptors. The encoded protein may form complex with G proteins and stimulate Rho-dependent signals. This protein is similar to rat collybistin protein. Alternative splicing of this gene generates two transcript variants which encode different isoforms. Also there is possibility for the usage of multiple polyadenylation sites for this gene. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

9 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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Staining summary

Moderate cytoplasmic positivity was observed in endocrine glands and neuronal cells in CNS. Megakaryocytes of bone marrow were strongly stained. Remaining normal cells were negative or weakly stained.

Tissue specificity

Staining in 27 out of 80 cell types

Reliability (Single)

Antibodies in assay

HPA018267
 

Organ

No of cell types

Antibody staining

CNS (brain) 11
Hematopoietic (blood) 8
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 12
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 8% of the cancers

Antibodies in assay

HPA018267
 

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 Low

-

-

CACO-2 Colon Low

-

-

HEK 293 Embryonal kidney Low

-

-

HeLa Cervix Medium

-

-

Hep-G2 Liver Not detected

-

-

MCF-7 Pleural effusion Low

-

-

PC-3 Bone marrow Medium

-

-

RT-4 Urinary bladder Low

-

-

U-2 OS Bone Low

-

-

U-251 MG Brain Low

-

-

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA018267 pAb