Proteinase-activated receptor 2 (PAR2) also known as coagulation factor II (thrombin) receptor-like 1 (F2RL1) or G-protein coupled receptor 11 (GPR11) is a protein that in humans is encoded by the F2RL1 gene. PAR2 modulates inflammatory responses, obesity, metabolism, and acts as a sensor for proteolytic enzymes generated during infection. Functional selectivity occurs with PAR2, several proteases cleave PAR2 at distinct sites leading to biased signalling. Synthetic small ligands also modulate biased signalling leading to different functional responses. So far, PAR2 has been co-crystallized with two different antagonist ligands, while an agonist-bound state model of PAR2 (with the endogenous ligand SLIGKV) has been determined through mutagenesis and structure-based drug design. MPXNOMAD PAR2 Receptor Cell Line from Innoprot allows the measurement of the activity and potency of ligands; such as trypsin.
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