Structural features of fibrinogen associated with binding to chelated zinc.
Fibrinogen absorbed to zinc chelate columns at pH 7.8 and was eluted sharply with a pK of 5.8 indicative of the involvement of a histidine residue. The binding was unaffected by high concentrations of calcium or zinc. Fibrinogen degradation products X and Y also bound to zinc chelate columns. On passage of fibrinogen fragments D and E through these columns fragment E was not bound and fragment D was eluted subsequently in a pure form with a pK of 6.1.
D001665:Binding Sites; D002846:Chromatography, Affinity; D005340:Fibrinogen / Q000302:isolation & purification / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D011485:Protein Binding; D015032:Zinc
D005340:Fibrinogen; D015032:Zinc