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| | Determination of Inhibitory Activity Against Factor IXa |
| Description: | Formation of a clot to stem bleeding at a site of blood vessel injury involves the coordinated activity of a group of plasma proteins that initiate and propagate fibrin formation and subsequently protect fibrin from premature degradation. Factor IX is a key component of the plasma system that forms a fibrin clot at a site of vascular injury. The activity of Factor IXa is measured by monitoring the cleavage of the fluorescent peptide, CH3SO2-D-CHG-Gly-Arg-AFC.AcOH (CHG is cyclohexyl-glycine and AFC is trifluoro aminomethyl coumarin). Factor IXa cleaves the amide bond between Arg and AFC, thereby releasing the AFC fluorophore. The free AFC can be detected with a fluorescence detector at an excitation wavelength of 405 nM and emission wavelength of 510 nM. |
| Affinity data for this assay | |
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