Table Different cooperative binding models define the relationship of the estimated model parameters. The relationships are taken from Hibbert and Thordarson, 2016. 11 K 2 refers to either K 12 or K 21 , depending on the stoichiometry of the complex. Similar, δ ∆2 refers to the signal of either the 2:1 or 1:2 species, whereas δ ∆1 denotes the 1:1 species