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  • Title: Isolation and characterization of bovine factor VII.
    Author: Kisiel W, Davie EW.
    Journal: Biochemistry; 1975 Nov 04; 14(22):4928-34. PubMed ID: 1182130.
    Abstract:
    Factor VII (proconvertin) has been purified approximately 5 x 10(5)-fold from bovine plasma with an overall yield of 30%. The isolation procedure involves barium sulfate adsorption and elution, DEAE-Sephadex batchwise adsorption and elution, benzamidine-agarose column chromatography, heparin-agarose column chromatography, and preparative polyacrylamide gel disc electrophoresis. The final product was homogeneous when examined by gel electrophoresis in the presence of sodium dodecyl sulfate. A minimal molecular weight of 45,500 was determined by sedimentation equilibrium. The molecular weight estimated by sodium dodecyl sulfate gel electrophoresis was 54,000. Factor VII is composed of a single polypeptide chain possessing an amino-terminal sequence of Ala-Asn-Gly-Phe-Leu-. The amino acid and carbohydrate compositions of factor VII are also reported.
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