title: A rapid purification with high recovery of factor XII (Hageman factor) on immunoaffinity column: application to an abnormal clotting factor XII (factor XIITORONTO).
abstract: A rapid purification procedure with high recovery of blood coagulation factor XII (Hageman factor, HF) was established. Homogeneous HF was isolated in 6 days on a monoclonal antibody-immunoaffinity column chromatography followed by gel filtration. Approximately 4,300-fold purification of HF was attained with 31% yield on average (n = 4). Using this method, an abnormal HF was purified from plasma of a patient with cross-reacting material (CRM)-positive Hageman trait (factor XIITORONTO). The abnormal HF was found to be a single chain polypeptide with the same molecular weight (80,000) as the normal HF. Both abnormal and normal HF had similar amino acid compositions.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000911:Antibodies, Monoclonal; D002846:Chromatography, Affinity; D004591:Electrophoresis, Polyacrylamide Gel; D005174:Factor XII / Q000302:isolation & purification*; D006801:Humans; D005779:Immunodiffusion; D007122:Immunoelectrophoresis
chemical_list: D000596:Amino Acids; D000911:Antibodies, Monoclonal; C057256:factor XII Toronto; D005174:Factor XII