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GENE AND PROTEIN SUMMARY

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Gene name

CHRNA4

Description

cholinergic receptor, nicotinic, alpha 4 (neuronal)

Protein class

Mapped to UniProt SWISS-PROT, Potential transmembrane proteins, Potentially secreted proteins, Transporters

Protein evidence

Medium

Entrez gene summary

This gene encodes a nicotinic acetylcholine receptor, which belongs to a superfamily of ligand-gated ion channels that play a role in fast signal transmission at synapses. These pentameric receptors can bind acetylcholine, which causes an extensive change in conformation that leads to the opening of an ion-conducting channel across the plasma membrane. This protein is an integral membrane receptor subunit that can interact with either nAChR beta-2 or nAChR beta-4 to form a functional receptor. Mutations in this gene cause nocturnal frontal lobe epilepsy type 1. Polymorphisms in this gene that provide protection against nicotine addiction have been described. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2012]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

2 in total
1 with predicted TM region
1 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 of the normal tissues displayed moderate to strong cytoplasmic staining. Ovarian and endometrial stroma, glial cells and smooth muscle cells were negative.

Tissue specificity

Staining in 69 out of 81 cell types

Reliability (Single)

Antibodies in assay

CAB034064
 

Organ

No of cell types

Antibody staining

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 12
Respiratory (lung) 4
Cardiovascular 1
Female tissues 12
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 15
Endocrine tissues 3

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 60% of the cancers

Antibodies in assay

CAB034064
 

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

Low
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

A-431 Skin Not detected

-

-

A-549 Lung Not detected

-

-

CACO-2 Colon Not detected

-

-

HEK 293 Embryonal kidney Not detected

-

-

HeLa Cervix Not detected

-

-

Hep-G2 Liver Not detected

-

-

MCF-7 Pleural effusion Not detected

-

-

PC-3 Bone marrow Not detected

-

-

RT-4 Urinary bladder Not detected

-

-

U-2 OS Bone Low

-

-

U-251 MG Brain Not detected

-

-

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB034064 mAb