Description
Figure. Concentration-dependent activation of P2RY4 by ATP. Reporter cells were transfected with either the expression plasmid for pyrimidinergic receptor P2Y4 (P2RY4) or the mock plasmid and treated with various concentrations of adenosine triphosphate (ATP). Data points shown are the mean ± SEM of an experiment performed in triplicate, and the curve is a fit to Hill equation with an EC50 of 27 µM.