Fibrinogen has a double function: yielding monomers that polymerize into fibrin and acting as a cofactor in platelet aggregation. Defects in FGG are a cause of congenital afibrinogenemia (CAFBN). This rare autosomal recessive disorder is characterized by bleeding that varies from mild to severe and by complete absence or extremely low levels of plasma and platelet fibrinogen. Patients with congenital fibrinogen abnormalities can manifest different clinical pictures. Some cases are clinically silent, some show a tendency toward bleeding and some show a predisposition for thrombosis with or without bleeding. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Secreted, signal peptide; Secreted
Cellular Component: extracellular space; fibrinogen complex; extracellular region; plasma membrane; cell cortex; external side of plasma membrane
Molecular Function: protein binding, bridging; eukaryotic cell surface binding; metal ion binding; receptor binding
Biological Process: protein polymerization; platelet activation; platelet degranulation; blood coagulation; response to calcium ion; signal transduction
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.