plasminogen plasmin precursor protein. plasmin is an enzyme responsible for the breakdown of fibrin (fibrinolysis

plasminogen plasmin blood clot enzyme fibrinolysis fibrin plg serine protease zymogen tissue activator tpa urokinase upa kallikrein hageman factor xii angiostatin thrombosis pdb4duu structure peptide protein amino acid molecule polypeptide polymer atoms science scientific disease health molecular model