Reactivity | HuSpecies Glossary |
Applications | Enzyme Activity |
Format | Carrier-Free |
Details of Functionality | Measured by its ability to cleave the fluorogenic peptide substrate Boc-VPR-AMC (Catalog # ES011). The specific activity is >3,000 pmol/min/µg, as measured under the described conditions. |
Source | Human plasma-derived Coagulation Factor II/Thrombin protein The human plasma used for the isolation of this product was certified by the supplier to be non-reactive for HIV-1/2 and HBsAg negative at the donor level. Human blood products should always be treated in accordance with universal handling precautions. |
N-terminal Sequence | ANTFLEEVRKG |
Structure / Form | pro form |
Protein/Peptide Type | Natural Enzymes |
Gene | F2 |
Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain |
Endotoxin Note | <1.0 EU per 1 μg of the protein by the LAL method. |
Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Lyophilized from a 0.2 μm filtered solution in MES, NaCl and Brij-35. |
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Purity | >95%, by SDS-PAGE under reducing conditions and visualized by silver stain |
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Reconstitution Instructions | Reconstitute at 5 mg/mL in sterile, deionized water. |
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Assay Procedure |
**Derived using calibration standard 7-amino, 4-Methyl Coumarin (Sigma, Catalog # A-9891). Per Well:
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Coagulation factor II/Thrombin is an essential component of the coagulation cascade in which it converts fibrinogen to fibrin, activates coagulation factors V, VII, VIII, XIII and forms complexes with protein C and thrombomodulin.(1) It also activates platelets and regulates the behavior of additional cells through protease-activated receptors (PARs) (2). It may have either protective or deleterious functions, depending on the level and location (3). Its activity is regulated by endogenous inhibitors such as anti-Thrombin III (serpin C1) or heparin cofactor II (serpin D1). A plasma serine protease, Thrombin is synthesized in the liver as a 622 amino acid precursor with a 24 amino acid signal peptide and a 19 residue pro peptide. The mature chain starting at Ala-44 can be further processed by itself or by similar enzymes into several forms including those designated as alpha -, beta ‑ and gamma -Thrombin. Composed of a disulfide bond-linked dimer of the light chain (A) (residues 328-363) and the heavy chain (B) (residues 364-622), alpha -Thrombin displays the diverse functions as described above. Compared to alpha -Thrombin, the further processed B chains of beta ‑ and gamma ‑Thrombin have no known physiological function, but retain most of the activity towards small synthetic substrates (4). Human Thrombin purified from the plasma corresponds to the mature chain, which can be activated by treatment with thermolysin. In comparison, the recombinant human Thrombin (Catalog # 1473-SE) is the active enzyme similar to the alpha - and gamma -Thrombin.
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Gene Symbol | F2 |