Binding Probability

$P_b=\frac{\frac{c}{c_0}{e}^{-\beta \Delta \epsilon }}{\frac{c}{c_0}{e}^{-\beta \Delta \epsilon }+1}$

• The probability of binding for a ligand with concentration $c$ relative to $c_0$ to a receptor with binding energy minus free energy $\Delta \epsilon$ and [coldness] $\beta$