Abstract
Urokinase-type plasminogen activator (uPA) is a trypsin-like serine protease that activates plasminogen into the active serine protease, plasmin. Studying the catalytic activity of uPA gives insight to plasmin’s involvement in anticoagulation, cell adhesion, and degradation of the extracellular matrix, among others. The uPA’s catalytic activity is influenced by the orientation of the catalytic triad and the substrate binding affinity at the specificity pocket. This enzyme consists of an Amino-Terminal Fragment (ATF), a protease domain, and a disordered linker which connects the ATF and the protease domain.
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