Activation of Tissue Factor by a Disulphide-Bond Switch

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This project will define the molecular mechanism of activation of tissue factor, the initiator of blood coagulation, and design and test novel antibody therapeutics that block this activation. The applicant suggests that tissue factor is activated by a disulphide-bond switch. Should this hypothesis prove correct it would be the first example of activation of a mammalian protein by this means and, moreover, would be very amenable to therapeutic intervention because activation occurs on the membrane surface inside blood vessels. Tissue factor activation and thrombus formation is the precipitating event in acute myocardial infarction, unstable angina and ischemic stroke, which are responsible for the majority of deaths in Australia.