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GENE AND PROTEIN SUMMARY

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Gene name

GNB4

Description

guanine nucleotide binding protein (G protein), beta polypeptide 4

Protein class

Mapped to UniProt SWISS-PROT, Potential transmembrane proteins

Protein evidence

High

Entrez gene summary

Heterotrimeric guanine nucleotide-binding proteins (G proteins), which integrate signals between receptors and effector proteins, are composed of an alpha, a beta, and a gamma subunit. These subunits are encoded by families of related genes. This gene encodes a beta subunit. Beta subunits are important regulators of alpha subunits, as well as of certain signal transduction receptors and effectors. [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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Main location(s)

Plasma membrane

Additional location(s)

Golgi apparatus 

Staining summary

Staining of plasma membrane in all three cell lines with additional staining of the Golgi apparatus in A-431.

Reliability (Single)

Antibodies in assay

HPA040736
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Ubiquitous cell membranous expression.

Tissue specificity

Expressed in 82 out of 82 cell types

Reliability (APE)

High

Antibodies in assay

CAB018383, CAB018737, HPA040736
 

Organ

No of cell types

Protein expression

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 14
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 75% of the cancers

Antibodies in assay

CAB018383, CAB018737, HPA040736
 

Tissue

Cancer staining

Protein
expression of
normal tissue

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

Tissue

Cancer staining

Protein
expression of
normal tissue

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

High
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

CAB018383

CAB018737

HPA040736

HPA040736

A-431 Skin Medium
Moderate
A-549 Lung Medium
CACO-2 Colon Low
HEK 293 Embryonal kidney Medium
HeLa Cervix High
Hep-G2 Liver Not detected
MCF-7 Pleural effusion Low
PC-3 Bone marrow Medium
RT-4 Urinary bladder Low
U-2 OS Bone Medium
Weak
U-251 MG Brain High
Weak

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

Also mapped to

CAB018383 msAb
CAB018737 pAb
HPA040736 pAb
GNB1 (90%), GNB2 (97%), GNB3 (83%)