The thrombin-fibrinogen interaction
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Updated: Aug 15, 2026

Experimental and Imaging Techniques for Examining Fibrin Clot Structures in Normal and Diseased States
Published on: April 1, 2015
1Baker Laboratory of Chemistry, Cornell University, Ithaca, NY 14853-1301, USA. has5@cornell.edu
Abstract:
The thrombin-catalyzed conversion of fibrinogen (F) to fibrin consists of three reversible steps, with thrombin (T) being involved in only the first step which is a limited proteolysis to release fibrinopeptides (FpA and FpB) from fibrinogen to produce fibrin monomer. In the second step, fibrin monomers form intermediate polymers through noncovalent interactions. In the third step, the intermediate polymers aggregate to form the fibrin clot. The molecular mechanisms of the first two steps are elucidated.
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