Fibrin

Fibrin is the protein fiber that forms a blood clot. Fibrin is produced from the precursor, fibrinogen, as the last step in a cascading series of covalent modifications of blood proteins (Figure 11.42). The enzymatic cleavage of the inactive fibrinogen to form active fibrin is catalyzed by the enzyme, thrombin.

See also: Blood Clotting, Thrombin

INTERNET LINKS:

> 1. Blood Clot Micrograph

> 2. Clotting