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  • Title: [Effect of fibronectin on fibrinogen conversion into fibrin].
    Author: Litvinov RI, Zubairov DM.
    Journal: Biokhimiia; 1988 Jul; 53(7):1203-13. PubMed ID: 3179367.
    Abstract:
    The effects of fibronectin on fibrinogen clotting induced by thrombin or reptilase and on fibrin monomer polymerization in a pure system in the absence of factor XIIIa were studied. It was shown that within a broad range of concentrations and molar ratios of the mixed proteins, fibronectin does not alter significantly the fibrinogen clotting time either under thrombin or under reptilase action. The effect of fibronectin on the fibrin self-assembly consists in a slight acceleration of this process, whose degree is directly dependent on the fibronectin/fibrin monomer molar ratio as well as on the absolute fibrin monomer content at a constant molar ratio. The stimulating effect of fibronectin is amplified by Ca2+. The experimental results suggest that fibronectin can noncovalently bind the fibrin monomer and/or intermediate polymers in the non-enzymatic phase of fibrinogen conversion to fibrin.
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