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Factor XI (FXI) is the zymogen of a plasma protease (FXIa) that contributes to hemostasis by activating factor IX (FIX). In the original cascade model of coagulation, FXI is converted to FXIa by factor XIIa (FXIIa), a component, along with prekallikrein and high-molecular-weight kininogen (HK), of the plasma kallikrein-kinin system (KKS).

| Pack Size | Price | Availability | Quantity |
|---|---|---|---|
| 5 μg | $58 | 7-10 days | |
| 10 μg | $92 | 7-10 days | |
| 20 μg | $148 | 7-10 days | |
| 50 μg | $289 | 7-10 days | |
| 100 μg | $487 | 7-10 days | |
| 200 μg | $883 | 7-10 days | |
| 500 μg | $1,950 | 7-10 days |
| Biological Activity | Activity has not been tested. It is theoretically active, but we cannot guarantee it. If you require protein activity, we recommend choosing the eukaryotic expression version first. |
| Description | Factor XI (FXI) is the zymogen of a plasma protease (FXIa) that contributes to hemostasis by activating factor IX (FIX). In the original cascade model of coagulation, FXI is converted to FXIa by factor XIIa (FXIIa), a component, along with prekallikrein and high-molecular-weight kininogen (HK), of the plasma kallikrein-kinin system (KKS). |
| Species | Cynomolgus |
| Expression System | HEK293 Cells |
| Tag | C-His |
| Accession Number | XP_005556540.2 |
| Synonyms | PTA,FXI,F11,Coagulation factor XI |
| Construction | Glu44-Ala650 |
| Protein Purity | > 95% as determined by Tris-Bis PAGE; > 95% as determined by HPLC |
| Molecular Weight | 69.05 kDa (predicted). Due to glycosylation, the protein migrates to 70-85 kDa based on Tris-Bis PAGE result. |
| Endotoxin | < 1 EU/μg by the LAL method. |
| Formulation | Supplied as 0.22 μm filtered solution in PBS (pH 7.4). |
| Stability & Storage | It is recommended to store the product under sterile conditions at -70°C or lower. Samples are stable for up to 12 months at -80°C. Please avoid multiple freeze-thaw cycles and store products in aliquots. |
| Shipping | Shipping with blue ice. |
| Research Background | Factor XI (FXI) is the zymogen of a plasma protease (FXIa) that contributes to hemostasis by activating factor IX (FIX). In the original cascade model of coagulation, FXI is converted to FXIa by factor XIIa (FXIIa), a component, along with prekallikrein and high-molecular-weight kininogen (HK), of the plasma kallikrein-kinin system (KKS). |

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