Protease-Activated Receptor 1 as an Endogenous Model of Peptidergic Gαq-Gα12-Biased G Protein Signaling
This study establishes Protease-Activated Receptor 1 (PAR1) as an endogenous model of functional selectivity, demonstrating that thrombin and activated protein C cleavage differentially engage Gq and G12 signaling pathways to drive distinct physiological outcomes, such as platelet activation versus cytoprotection, without recruiting β-arrestin.