tPA Mouse anti-Human, Clone: OTI3H3, Invitrogen
Mouse Monoclonal Antibody
Manufacturer: Invitrogen MA526735
DescriptionTPA converts the abundant, but inactive, zymogen plasminogen to plasmin by hydrolyzing a single Arg-Val bond in plasminogen. By controlling plasmin-mediated proteolysis, it plays an important role in tissue remodeling and degradation, in cell migration and many other physiopathological events. It specifically cleaves the Arg- -Val bond in plasminogen to form plasmin, and is comprised of a heterodimer of chain A and chain B held by a disulfide bond. TPA binds to fibrin with high affinity. This interaction leads to an increase in the catalytic efficiency of the enzyme between 100-and 1000-fold, due to an increase in affinity for plasminogen. Similarly, binding to heparin increases the activation of plasminogen. Binding to laminin and fibronectin has also been demonstrated. TPA also binds to mannose receptor and the low-density lipoprotein receptor-related protein (LRP1). These proteins are involved in TPA clearance. TPA binds to annexin II and to cytokeratin 8. As yet unidentified interactions on endothelial cells and vascular smooth muscle cells (VSMC) lead to a 100-fold stimulation of plasminogen activation. In addition, binding to VSMC reduces TPA inhibition by PAI-1 by 30-fold.
|PBS with 1% BSA, 50% glycerol and 0.02% sodium azide; pH 7.3|
|Tissue-type plasminogen activator; t-PA; t-plasminogen activator; tPA; Alteplase; Reteplase; Tissue-type plasminogen activator chain A; Tissue-type plasminogen activator chain B; PLAT|
|-20° C, Avoid Freeze/Thaw Cycles|
|Immunohistochemistry (Paraffin), Western Blot|
|Human recombit protein fragment corresponding to amino acids 157-426 of PLAT produced in E.coli|
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