Abcam, ab234969, Recombinant human Antithrombin III/ATIII protein (Active)

Size: 5µg
Recombinant human Antithrombin III/ATIII protein (Active) is a Human Full Length protein, in the 33 to 464 aa range, expressed in Baculovirus infected insect cells, with >90%, < 1 EU/µg endotoxin level, suitable for SDS-PAGE, FuncS.
Key facts
Purity:>90% SDS-PAGE,
Endotoxin level:< 1 EU/µg,
Expression system:Baculovirus infected insect cells,
Tags:His tag C-Terminus,
Applications:FuncS, SDS-PAGESee reactivity dataSee the reactivity data table below for information on validated species and application combinations.,
Biologically active:Yes,
Biological activity:Measured by its ability to inhibit Thrombin cleavage of substrate Boc-VPR-AMC. The IC50 for this effect is less or equal to 1 nM.,
Accession:P01008,
Animal free:No,
Carrier free:No,
Species:Human,
Storage buffer:pH: 7.4Constituents: PBS, 10% Glycerol (glycerin, glycerine)

Product details:
Previously labelled as Antithrombin III.

Properties and Storage Information:
Shipped at conditions-Blue Ice, Appropriate short-term storage duration-1-2 weeks, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions--20°C, Aliquoting information-Upon delivery aliquot, Storage information-Avoid freeze / thaw cycle

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Antithrombin III also known as ATIII or antithrombin 3 is a glycoprotein with a mass of approximately 58 kDa. This protein is mainly synthesized in the liver and circulates in the blood plasma. Antithrombin III functions as a serine protease inhibitor targeting and inhibiting several key enzymes involved in blood coagulation including thrombin and Factor Xa. Its activity is influenced by the presence of heparin which increases its inhibitory effects on these enzymes. This interaction is essential for regulating blood clot formation and maintaining hemostatic balance.
Biological function summary
Antithrombin III plays a critical role in blood clotting by specifically inhibiting clotting factors. It forms complexes with its target enzymes leading to their inactivation and preventing excessive thrombin production. The protein does not form part of larger complexes but acts independently to exert its anticoagulant function. The normal range for antithrombin 3 levels in plasma is important for ensuring a balanced blood coagulation system. Its function helps prevent inappropriate clot formation and ensures smooth blood flow through the circulatory system.
Pathways
Antithrombin III is integral to the coagulation cascade. It is primarily involved in the intrinsic and common coagulation pathways where it regulates thrombin and Factor Xa activity. This regulation prevents the unchecked formation of fibrin clots which can lead to thrombosis. ATIII works closely with proteins like heparin cofactor II and protein C which also modulate the coagulation pathway emphasizing its role in maintaining hemostatic balance. Its function is essential in controlling the coagulation cascade and ensuring that it proceeds appropriately without leading to pathology.
Antithrombin III deficiency can lead to coagulation disorders such as thrombophilia characterized by an increased risk of forming clots. Inherited or acquired deficiencies in antithrombin 3 can result in life-threatening thrombotic events. Furthermore liver diseases which affect the production of ATIII can also result in decreased antithrombin activity compounding coagulation problems. Other proteins related to this process include protein S and plasminogen which also play roles in clot regulation and fibrinolysis. Understanding the connection of antithrombin III to these pathways and diseases is important for developing effective therapeutic strategies.