Human Factor XI is a plasma glycoprotein which circulates in a non-covalent complex with high molecular weight kininogen. The mature molecule is synthesized in the liver. It is a two-chain homodimer with a molecular weight of ~160kD. It is estimated that 5% of the total mass is attributable to carbohydrate. The two identical monomers have molecular weights of 80kD. They are joined together by disulfide bonds. By SDS-PAGE analysis, factor XI appears as a single band both non-reduced (Mr 160kD) and reduced (Mr 80kD).
Applications
Suitable for use as an inhibitor in clotting assays, Western Blot, RIA and FLISA. Useful for purification of Factor XI. Other applications have not been tested.
Recommended Dilutions
Western Blot: Non-reduced samples only Optimal dilutions to be determined by the researcher.er.
Storage and Stability
Store product at 4°C if to be used immediately within two weeks. For long-term storage, aliquot to avoid repeated freezing and thawing and store at -20°C. Aliquots are stable at -20°C for 12 months after receipt. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. Caution: FITC conjugates are sensitive to light. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Note: Applications are based on unconjugated antibody.
Form
Supplied as a liquid in PBS, pH 7.2. No preservative added. No stabilizing proteins added. Labeled with Fluorescein isothiocyanate (FITC).
Purity
Purified by ammonium sulfate precipitation, ion exchange chromatography and gel filtratation from ascites.
Specificity
Recognizes human Factor XI.