thrombomodulin: Thrombomodulin is a specific endothelial cell receptor that forms a 1:1 stoichiometric complex with thrombin. This complex is responsible for the conversion of protein C to the activated protein C (protein Ca). Once evolved, protein Ca scissions the activated cofactors of the coagulation mechanism, factor Va and factor VIIIa, and thereby reduces the amount of thrombin generated. Defects in THBD are the cause of thrombophilia due to thrombomodulin defect (THPH12). A hemostatic disorder characterized by a tendency to thrombosis. Defects in THBD are a cause of susceptibility to hemolytic uremic syndrome atypical type 6 (AHUS6). An atypical form of hemolytic uremic syndrome. It is a complex genetic disease characterized by microangiopathic hemolytic anemia, thrombocytopenia, renal failure and absence of episodes of enterocolitis and diarrhea. In contrast to typical hemolytic uremic syndrome, atypical forms have a poorer prognosis, with higher death rates and frequent progression to end-stage renal disease. Susceptibility to the development of atypical hemolytic uremic syndrome can be conferred by mutations in various components of or regulatory factors in the complement cascade system. Other genes may play a role in modifying the phenotype.
Protein type: Membrane protein, integral
Chromosomal Location of Human Ortholog: 20p11.2
Cellular Component: extracellular space; cell surface; integral to plasma membrane; plasma membrane
Molecular Function: protein binding; transmembrane receptor activity; calcium ion binding; receptor activity
Biological Process: negative regulation of fibrinolysis; response to cAMP; negative regulation of blood coagulation; response to lipopolysaccharide; female pregnancy; signal transduction; blood coagulation; leukocyte migration; response to X-ray
Disease: Thrombophilia Due To Thrombomodulin Defect; Hemolytic Uremic Syndrome, Atypical, Susceptibility To, 6
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