Isolation and characterization of human blood platelet gelsolin

Abstract
A 90‐kDa protein‐actin stable complex was purified from blood platelets by a short and efficient procedure giving at the same time actin used in polymerization assays. 90‐kDa protein free of actin was prepared from the complex by 8 M ureau treatment and renaturation. By its molecular mass, immunological cross‐reactivity with macrophage gelsolin and its effect on G‐ and F‐actin the 90‐kDa protein appears as the platelet gelsolin.