Abstract
The structure of fibrinogen and resulting fibrin formed during the coagulation process have important biological functions in human physiology and pathology. Fibrinogen post-translational modifications (PTMs) increase the complexity of the protein structure and many studies have emphasized thepotential associations of post-translationally altered fibrinogen with the formation of a fibrin clot with a prothrombotic phenotype. However, the mechanisms by which PTMs exert their action on fibrinogen, and their causal association with disease pathogenesis are relatively unexplored. Moreover, the significance of fibrinogen PTMs in health has yet to be appreciated. In this review, the impact of fibrinogen PTMs on fibrinogen functionality is discussed from a biochemical perspective, emphasizing the potential mechanisms by which PTMs mediate the acquisition of altered fibrinogen properties. A brief discussion on dysfibrinogenemias of genetic origin, attributed to single point variations of the fibrinogen molecule is also provided, highlighting the influence that amino acid properties have on fibrinogen structure, properties, and molecular interactions that arise during thrombus formation.
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