Protein S is a crucial component in the blood coagulation process. It serves as a cofactor to Protein C in inhibiting blood clotting. The functional form of Protein S aids in the inactivation of two important clotting factors: Factor Va and Factor VIIIa. By facilitating the degradation of these factors, Protein S plays a vital role in regulating thrombosis, preventing excessive blood clot formation, and maintaining the balance of coagulation and anticoagulation in the body.