Fields »

GENE AND PROTEIN SUMMARY

? »

Gene name

APOA4

Description

apolipoprotein A-IV

Protein class

Candidate cardiovascular disease genes, Mapped to UniProt SWISS-PROT, Plasma proteins, Potential transmembrane proteins, Potentially secreted proteins

Protein evidence

High

Entrez gene summary

Apoliprotein (apo) A-IV gene contains 3 exons separated by two introns. A sequence polymorphism has been identified in the 3'UTR of the third exon. The primary translation product is a 396-residue preprotein which after proteolytic processing is secreted its primary site of synthesis, the intestine, in association with chylomicron particles. Although its precise function is not known, apo A-IV is a potent activator of lecithin-cholesterol acyltransferase in vitro. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

? »

Show image »

Main location(s)

Cytoplasm

Additional location(s)

Centrosome 

Staining summary

Mainly localized to the cytoplasm but also to centrosomes.

Reliability (APE)

Medium

Antibodies in assay

HPA001352, HPA002549
 

NORMAL TISSUE & ORGAN SUMMARY

? »

Show image »

Expression summary

Cytoplasmic expression in a several tissues. High expression in small intestine and plasma.

Tissue specificity

Expressed in 33 out of 81 cell types

Reliability (APE)

High

Antibodies in assay

HPA001352, HPA002549
 

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 13
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

? »

Staining summary

Antibody staining in 52% of the cancers

Antibodies in assay

HPA001352, HPA002549
 

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

? »

RNA evidence

Medium
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA001352

HPA002549

HPA001352

HPA002549

A-431 Skin Not detected

-

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

ANTIBODY SUMMARY

? »

Antibody

Clonality

Validation

HPA001352 pAb
HPA002549 pAb