Ligand Y for mouse Y for rat Y for human concentration receptor receptor receptor (nM) 0.20 0.048 0.29 0.17 0.50 0.11 0.50 0.33 1.0 0.20 0.67 0.50 4.0 0.50 0.89 0.80 10 0.71 0.95 0.91 20 0.83 0.97 0.95 50 0.93 0.99 0.98 Determine the Ka for the human receptor in this binding experiment. human receptor Kd = nM
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