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GENE AND PROTEIN SUMMARY

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Gene name

MASP2

Description

mannan-binding lectin serine peptidase 2

Protein class

Enzymes, Mapped to UniProt SWISS-PROT, Peptidases, Plasma proteins, Potentially secreted proteins

Protein evidence

High

Entrez gene summary

The Ra-reactive factor (RARF) is a complement-dependent bactericidal factor that binds to the Ra and R2 polysaccharides expressed by certain enterobacteria. Alternate splicing of this gene results in two transcript variants encoding two RARF components that are involved in the mannan-binding lectin pathway of complement activation. The longer isoform is cleaved into two chains which form a heterodimer linked by a disulfide bond. The encoded proteins are members of the trypsin family of peptidases. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

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

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Golgi apparatus

Additional location(s)

Nucleus but not nucleoli 

Staining summary

Mainly localized to the Golgi apparatus.

Reliability (APE)

Medium

Antibodies in assay

HPA029313, HPA029314
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Cytoplasmic expression in most cells combined with distinct expression in collagen and plasma.

Tissue specificity

Expressed in 64 out of 82 cell types

Reliability (APE)

Low

Antibodies in assay

HPA029313, HPA029314
 

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 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 15
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 65% of the cancers

Antibodies in assay

HPA029313, HPA029314
 

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

Medium
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

 

HPA029313

HPA029314

A-431 Skin Low

-

WeakModerate
A-549 Lung Low

-

CACO-2 Colon Low

-

HEK 293 Embryonal kidney Low

-

HeLa Cervix Low

-

Hep-G2 Liver Medium

-

MCF-7 Pleural effusion Low

-

PC-3 Bone marrow Low

-

RT-4 Urinary bladder Low

-

U-2 OS Bone Low

-

NegativeModerate
U-251 MG Brain Low

-

ModerateStrong

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA029313 pAb
HPA029314 pAb