Factor X (F10) Human Active Protein

This gene encodes the vitamin K-dependent coagulation factor X of the blood coagulation cascade. This factor undergoes multiple processing steps before its preproprotein is converted to a mature two-chain form by the excision of the tripeptide RKR. Two chains of the factor are held together by 1 or more disulfide bonds; the light chain contains 2 EGF-like domains, while the heavy chain contains the catalytic domain which is structurally homologous to those of the other hemostatic serine proteases. The mature factor is activated by the cleavage of the activation peptide by factor IXa (in the intrisic pathway), or by factor VIIa (in the extrinsic pathway). The activated factor then converts prothrombin to thrombin in the presence of factor Va, Ca+2, and phospholipid during blood clotting. Mutations of this gene result in factor X deficiency, a hemorrhagic condition of variable severity. [provided by RefSeq, Jul 2008]

F10: Factor Xa is a vitamin K-dependent glycoprotein that converts prothrombin to thrombin in the presence of factor Va, calcium and phospholipid during blood clotting. Defects in F10 are the cause of factor X deficiency (FA10D). A hemorrhagic disease with variable presentation. Affected individuals can manifest prolonged nasal and mucosal hemorrhage, menorrhagia, hematuria, and occasionally hemarthrosis. Some patients do not have clinical bleeding diathesis. Belongs to the peptidase S1 family.

Protein type: Lipid-binding; EC 3.4.21.6; Secreted; Motility/polarity/chemotaxis; Protease; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 13q34

Cellular Component: endoplasmic reticulum lumen; Golgi lumen; plasma membrane; extracellular region

Molecular Function: protein binding; serine-type endopeptidase activity; phospholipid binding; calcium ion binding

Biological Process: positive regulation of protein kinase B signaling cascade; blood coagulation, extrinsic pathway; cellular protein metabolic process; post-translational protein modification; blood coagulation; proteolysis; blood coagulation, intrinsic pathway; peptidyl-glutamic acid carboxylation; positive regulation of cell migration

Disease: Factor X Deficiency