Where n is the maximal aggregation number for a nucleus-like species. The fit quality is relatively insensitive to exact choices of n below values of 10, so we set n to 3, where we obtained the best results in previous work . σ is defined by K n = σK e , where K e is the equilibrium constant between monomers and species of higher aggregation number than n, and K n is the equilibrium constant between monomers and species of aggregation number up to n. WT references sharing ∆G 0 Buff . We assume independent measurements when propagating errors.