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Expression of human plasminogen activator inhibitor-2 in the baculovirus expression system.

A cDNA coding for human plasminogen activator inhibitor-2 (PAI-2) was transferred into the genome of Autographa californica nuclear polyhedrosis virus adjacent to the polyhedrin promoter. Cells infected with recombinant virus synthesized a 43-kDa PAI-2 protein, the majority of which was secreted. The recombinant PAI-2 was identical to native PAI-2 purified from human placenta with respect to interaction with polyclonal antibody and inhibition of urokinase-type plasminogen activator.