Tchem F12 Coagulation factor XII

Protein Summary

Description

Factor XII is a serum glycoprotein that participates in the initiation of blood coagulation, fibrinolysis, and the generation of bradykinin and angiotensin. Prekallikrein is cleaved by factor XII to form kallikrein, which then cleaves factor XII first to alpha-factor XIIa and then trypsin cleaves it to beta-factor XIIa. Alpha-factor XIIa activates factor XI to factor XIa. 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]

Uniprot Accession IDs

• P00748
• P78339

Gene Name

• F12

Ensembl ID

• ENST00000253496
• ENSP00000253496
• ENSG00000131187

Symbol

• HAF
• HAE3
• HAEX

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
protein domain	1
kinase perturbation	0.97
biological term	0.8
disease	0.69
biological process	0.64

Protein Classes

PANTHER Classes

Protein / Hydrolase / Protease / Serine Protease / Coagulation Factor Xii

DTO Classes

Protein / Enzyme / Protease / Serine Protease / Coagulation Factor Xii

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 773.43   (req: < 5)

Gene RIFs: 151   (req: <= 3)

Antibodies: 656   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 773.43   (req: >= 5)

Gene RIFs: 151   (req: > 3)

Antibodies: 656   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 16

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligands: 105

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 1