What Type of Binding is Indicated by a Sigmoidal-Shaped Binding

Question

What type of binding is indicated by a sigmoidal-shaped binding curve?
A) competitive
B) noncompetitive
C) uncooperative
D) cooperative
E) None of the answers is correct.

Accepted Answer

A sigmoidal-shaped binding curve is indicative of cooperative binding, where the binding of one ligand affects the binding affinity of additional ligands. This is often seen in proteins with multiple binding sites, such as hemoglobin.