When the Concentration of a Ligand is Equal to the K_D

Question

When the concentration of a ligand is equal to the KD,
A)all of the ligands and receptors are bound to each other.
B)half of the ligands are bound to receptors.
C)all of the ligands are bound to receptors.
D)half of the receptors are bound to ligands.
E)all of the receptors are bound to ligands.

Accepted Answer

When the concentration of a ligand equals the dissociation constant (KS), it means that half of the receptors are bound to ligands. This is a fundamental principle in biochemistry related to ligand-receptor binding dynamics.