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GENE AND PROTEIN SUMMARY

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Gene name

A2M

Description

alpha-2-macroglobulin

Protein class

Candidate cancer biomarkers, Candidate cardiovascular disease genes, Mapped to UniProt SWISS-PROT, Plasma proteins, Potential transmembrane proteins

Entrez gene summary

Alpha-2-macroglobulin is a protease inhibitor and cytokine transporter. It inhibits many proteases, including trypsin, thrombin and collagenase. A2M is implicated in Alzheimer disease (AD) due to its ability to mediate the clearance and degradation of A-beta, the major component of beta-amyloid deposits. [provided by RefSeq, Jul 2008]

No of splice variants

6 in total
0 with predicted TM region
4 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Nucleus

Additional location(s)

Cytoplasm 

Staining summary

Staining of nucleus in all three cell lines with additional staining of cytoplasm in A-431.

Reliability (Single)

Antibodies in assay

HPA002265
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Extra cellular positivity, mainly in plasma.

Tissue specificity

Expressed in 4 out of 64 cell types

Reliability (APE)

Medium

Antibodies in assay

HPA002265, CAB017621
 

Organ

No of cell types

Protein expression

CNS (brain) 9
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 11
Respiratory (lung) 4
Cardiovascular 1
Female tissues 10
Placenta 1
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 4
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 24% of the cancers

Antibodies in assay

HPA002265, CAB017621
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Breast cancer
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Malignant carcinoid
 
Malignant glioma
 
 
 
Malignant lymphoma
 
 
 
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Malignant 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 level category

Low
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

HPA002265

CAB017621

HPA002265

A-431 Skin Negative
Weak
U-2 OS Bone Low
Weak
U-251 MG Brain Negative
Strong

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA002265 pAb
CAB017621 mAb