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Plasminogen activator inhibitor 1 (PAI-1) is the main inhibitor of plasminogen activators and plays an important role in many pathophysiological processes. Like other members of the serpin family, PAI-1 has a reactive center consisting of a mobile loop (RCL) with P1 and P1' residues acting as a ''bait'' for cognate protease. In contrast to the other serpins, PAI-1 loses activity by spontaneous conversion...
Background: The inhibitors that belong to the serpin family are widely distributed regulatory molecules that include most protease inhibitors found in blood. It is generally thought that serpin inhibition involves reactive-centre cleavage, loop insertion and protease translocation, but different models of the serpin-protease complex have been proposed. In the absence of a spatial structure of a serpin-protease...
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