Which plasma PA is unique among the serine proteases because it does not circulate as a zymogen but is fully active toward its substrate plasminogen in a single-chain form?

Question

Quizplus · Accepted Answer

Tissue plasminogen activator (tPA) is unique among serine proteases because it is secreted in an active form and can directly convert plasminogen to plasmin without needing to be activated from a zymogen form.

Which Plasma PA Is Unique Among the Serine Proteases Because