What is the mechanism by which activated Protein S enhances the activity of Protein C in the coagulation pathway?

A By binding to and activating Factor X
B By binding to and inhibiting Factor Va and Factor VIIIa
C By enhancing the binding of Protein C to phospholipid surfaces ✓
D By inhibiting the activity of antithrombin III

Explanation

Activated Protein S enhances the activity of Protein C by increasing its binding to phospholipid surfaces, allowing it to more efficiently degrade Factors Va and VIIIa.

Source

Hematology textbooks and research articles
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Hard MEDICAL Confidence: high