Learn More
Heparin has been proposed to conformationally activate the serpin, antithrombin, by making the reactive center loop P1 arginine residue accessible to proteinases. To evaluate this proposal, we(More)
The abilities of three synthetic oligosaccharides to accelerate antithrombin inhibition of ten clotting or fibrinolytic proteinases were compared with those of unfractionated, fractionated(More)
Heparin activates the primary serpin inhibitor of blood clotting proteinases, antithrombin, both by an allosteric conformational change mechanism that specifically enhances factor Xa inactivation and(More)
Michaelis complex, acylation, and conformational change steps were resolved in the reactions of the serpin, plasminogen activator inhibitor-1 (PAI-1), with tissue plasminogen activator (tPA) and(More)