part_of part of part of fibrinogen complex fibrinogen beta chain fibrinogen gamma chain A highly soluble, elongated protein complex found in blood plasma and involved in clot formation. It is converted into fibrin monomer by the action of thrombin. In the mouse, fibrinogen is a hexamer, 46 nm long and 9 nm maximal diameter, containing two sets of nonidentical chains (alpha, beta, and gamma) linked together by disulfide bonds. fibrinogen alpha chain cellular_component GO:0005577 fibrinogen extracellular space protein-containing complex