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GENE AND PROTEIN SUMMARY

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Gene name

F12

Description

coagulation factor XII (Hageman factor)

Protein class

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

Protein evidence

Medium

Entrez gene summary

This gene encodes coagulation factor XII which circulates in blood as a zymogen. This single chain zymogen is converted to a two-chain serine protease with an heavy chain (alpha-factor XIIa) and a light chain. The heavy chain contains two fibronectin-type domains, two epidermal growth factor (EGF)-like domains, a kringle domain and a proline-rich domain, whereas the light chain contains only a catalytic domain. On activation, further cleavages takes place in the heavy chain, resulting in the production of beta-factor XIIa light chain and the alpha-factor XIIa light chain becomes beta-factor XIIa heavy chain. Prekallikrein is cleaved by factor XII to form kallikrein, which then cleaves factor XII first to alpha-factor XIIa and then to beta-factor XIIa. The active factor XIIa participates in the initiation of blood coagulation, fibrinolysis, and the generation of bradykinin and angiotensin. It activates coagulation factors VII and XI. Defects in this gene do not cause any clinical symptoms and the sole effect is that whole-blood clotting time is prolonged. [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

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Main location(s)

Nucleus but not nucleoli

Additional location(s)

 

Staining summary

Staining of nuclei but not nucleoli in all three cell lines.

Reliability (Single)

Antibodies in assay

HPA003825
 

NORMAL TISSUE & ORGAN SUMMARY

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Staining summary

Kidney displayed moderate granular cytoplasmic staining, in distal tubules accentuated at luminal membrane. Skeletal muscle was moderately stained in cytoplasm. Plasma cells and serum showed positivity in all tissues. Remaining normal tissues were generally negative.

Tissue specificity

Staining in 7 out of 72 cell types

Reliability (Single)

Antibodies in assay

HPA003825
 

Organ

No of cell types

Antibody staining

CNS (brain) 11
Hematopoietic (blood) 7
Liver and pancreas 5
Digestive (GI-tract) 11
Respiratory (lung) 4
Cardiovascular 1
Female tissues 12
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 9
Endocrine tissues 2

Level of antibody staining





Strong
Moderate
Weak
Negative

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 12% of the cancers

Antibodies in assay

HPA003825
 

Tissue

Cancer staining

Normal tissue
staining

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

Tissue

Cancer staining

Normal tissue
staining

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

HPA003825

HPA003825

A-431 Skin Medium
Moderate
A-549 Lung Medium
CACO-2 Colon Medium
HEK 293 Embryonal kidney Medium
HeLa Cervix Low
Hep-G2 Liver Low
MCF-7 Pleural effusion High
PC-3 Bone marrow High
RT-4 Urinary bladder Low
U-2 OS Bone Low
Moderate
U-251 MG Brain Low
Moderate

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

HPA003825 pAb