the contractile protein of platelets, responsible for clot retraction, platelet aggregation, and release of ADP and other biologic amines essential to platelet function. Synonym(s): thrombosthenin
thrombosthenin
(thrŏm″bō-sthē′nĭn) [″ + sthenos, strength] A contractile protein present in platelets. This protein is active in clot retraction.