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goprolytix/Proteolyzed Forms of α-Thrombin/1 mg, 100 µg/HCGT-0021

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HCGT-0021

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goprolytix

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Alpha-thrombin is a highly specific serine protease generated by proteolytic activation of the zymogen prothrombin (1). Purified forms of α-thrombin have been shown (2-4) to undergo autolysis upon long term storage to less active forms. Similar inactivation was observed upon limited digestion of a-thrombin with trypsin (5). These proteolyzed forms of α-thrombin have been termed β-thrombin and γ-thrombin. Human β-thrombin is generated by cleavage of the B-chain at the Arg106-Tyr107 bond. γ-thrombin is generated by further cleavage of the β-thrombin B2-chain at the Lys190-Gly191 bond. Another form of proteolyzed thrombin, termed β’-thrombin is formed by the single cleavage of thrombin at Arg-154. γ-thrombin is produced by proteolytic cleavage at both of these sites (Arg70/73 and Arg-154) in the B-chain. These cleavages cause release of peptides that are no longer covalently attached to the thrombin molecule, but remain associated through ion exchange and gel filtration chromatography. These proteolyzed forms of thrombin retain their ability to cleave small synthetic substrates (6,7) and some protein substrates such as factor XIII (8), antithrombin III (9) and prothrombin (10). Their ability to clot fibrinogen (11), cleave thrombospondin (12) or activate protein C (9) have been markedly decreased.Human β-thrombin and γ-thrombin are prepared from purified a-thrombin by limited proteolysis with TPCK-treated trypsin, essentially by the method of Braun et al. (5). The proteolyzed forms of a-thrombin are supplied in 100 mM NaH2PO4, pH 6.5 buffer and should be stored at -20ºC. Purity is assessed by SDS-PAGE and activity is assessed using a fibrinogen clotting assay.

Prolytix(前身为Haematologic Technologies)于1987年由血栓形成和止血领域的杰出科学家Kenneth Mann博士创立，并迅速成为一家备受推崇的研究试剂公司。凭借在凝血和止血方面的专业知识，我们继续为世界各地的研究实验室提供高纯度的血浆蛋白和抗体。