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You are here:Home » Antibodies » Abs to Coagulation Factors » Anti -Factor IX

Anti -Factor IX

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Specifications

Clone Host Grade Applications
Polyclonal Sheep Affinity Purified E
Factor IX (FIX, Christmas Factor) is a vitamin K-dependent glycoprotein produced in the liver. Plasma concentration of FIX is normally around 5ug/ml (87nM) in plasma. The biological importance of FIX is demonstrated in Haemophilia B (Christmas disease). This is an X-linked congenital bleeding disease resulting from a quantitative (low activity and low antigen) or qualitative (low activity and normal antigen) defect in FIX function. In its proenzyme or zymogen form, FIX is a single chain molecule of 55kD. It contains two EGF-like domains and an amino-terminal domain containing 12-g-carboxy-glutamic acid (Gla) residues. These Gla residues allow FIX to bind divalent metal ions and participate in calcium-dependent binding interactions. The activation of FIX occurs by limited proteolysis in the presence of calcium by activated factor XI (FXIa) and/or by a complex of VIIa/tissue factor/phospholipid and activated Factor X between residues Arg146-Ala147 and between Arg180-Val181. The terminal activated product in either case is FIXab, a two-chain enzyme consisting of a heavy chain (28kD), a light chain (18kD) and an activation peptide product of 11kD. FIX can also be cleaved into inactive products by thrombin and by elastase. The activity of FIXab in plasma is inhibited by antithrombin. This inhibition is accelerated 1000-fold in the presence of optimal concentrations of heparin.
Catalog #F0017-08E
ApplicationsSuitable for use in ELISA. Other applications not tested.
Recommended DilutionOptimal dilutions to be determined by the researcher.
Storage and StabilityMay be stored at 4°C for short-term only. For long-term storage and to avoid repeated freezing and thawing, aliquot and store at -20°C. Aliquots are stable for at least 12 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Clone TypePolyclonal
IsotypeIgG
HostSheep
SourceHuman
Concentration~10mg/ml
FormSupplied as a liquid in 0.05M sodium phosphate, 0.1M sodium chloride, 1mM EDTA, pH 6.6.
PurityPurified by Protein G affinity chromatography.
ImmunogenHuman Factor IX.
SpecificityRecognizes human factor IX.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.


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