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GENE AND PROTEIN SUMMARY

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Gene name

ACRBP

Description

acrosin binding protein

Protein class

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

Protein evidence

Medium

Entrez gene summary

The protein encoded by this gene is similar to proacrosin binding protein sp32 precursor found in mouse, guinea pig, and pig. This protein is located in the sperm acrosome and is thought to function as a binding protein to proacrosin for packaging and condensation of the acrosin zymogen in the acrosomal matrix. This protein is a member of the cancer/testis family of antigens and it is found to be immunogenic. In normal tissues, this mRNA is expressed only in testis, whereas it is detected in a range of different tumor types such as bladder, breast, lung, liver, and colon. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleus but not nucleoli, Vesicles

Additional location(s)

 

Staining summary

Staining of vesicles and nucleus in all three cell lines.

Reliability (Single)

Antibodies in assay

HPA039082
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Highly selective expression in subsets of cells in seminiferus ducts.

Tissue specificity

Expressed in 8 out of 80 cell types

Reliability (APE)

Medium

Antibodies in assay

HPA039081, HPA039082
 

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 12
Placenta 1
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 14% of the cancers

Antibodies in assay

HPA039081, HPA039082
 

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

Low
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

 

HPA039082

A-431 Skin Low

-

Moderate
A-549 Lung Low

-

CACO-2 Colon Low

-

HEK 293 Embryonal kidney Not detected

-

HeLa Cervix Low

-

Hep-G2 Liver Not detected

-

MCF-7 Pleural effusion Low

-

PC-3 Bone marrow Not detected

-

RT-4 Urinary bladder Not detected

-

U-2 OS Bone Low

-

Moderate
U-251 MG Brain Not detected

-

Weak

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA039081 pAb
HPA039082 pAb