catalytic activity:Cleaves the vWF at the 842-Tyr-|-Met-843 in the A2 domain of the vWF subunit.,cofactor:Binds 1 zinc ion per subunit.,cofactor:Binds 4 calcium ions .,disease:Defects in ADAMTS13 are the cause of congenital thrombotic thrombocytopenic purpura (TTP) [MIM:274150]; also known as Upshaw-Schulman syndrome (USS). Congenital TTP is a life-threatening systemic disorder due to constitutional deficiency of vWF-cleaving protease. Typical features are hemolytic anemia with fragmentation of erythrocytes, thrombocytopenia, diffuse and nonfocal neurologic findings, decreased renal function and fever. Congenital TTP is characterized by neonatal onset, response to fresh plasma infusion and frequent relapses. Inheritance pattern is autosomal recessive. In sporadic cases, TTP is associated with deficiency of vWF-cleaving protease due to the presence of inhibiting autoantibodies (acquired T

非质量问题不退换