Question

State when this reaction occurs (fibrinogen)?
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Answer 1

Thrombin, in turn, catalyzes the conversion of fibrinogen (factor I)—a soluble plasma protein - into long, sticky threads of insoluble fibrin (factor Ia). Blood-clotting proteins generate thrombin, an enzyme that converts fibrinogen to fibrin, and a reaction that leads to the formation of a fibrin clot.