Kelin Li

Dynamic view of an allosteric intermediate in a positively cooperative dimer

Positive cooperativity in ligand binding is a hallmark of allosteric oligomers, yet how the first binding event enhances the second remains obscure, because the pivotal singly-bound intermediate (lig₁) is thermodynamically disfavored and rarely accumulates. Distinguishing concerted (MWC) from sequential (KNF) mechanism...