High-affinity binding of ligands to receptors is often physiologically important when some of the binding energy can be used to cause a conformational change in the receptor, resulting in altered behavior for example of an associated ion channel or enzyme.

What is ligand and its importance?

A ligand is an ion or molecule, which donates a pair of electrons to the central metal atom or ion to form a coordination complex. ... Ligands can be anions, cations, and neutral molecules. Ligands act as Lewis bases (donate electron pairs) and central metal atoms viewed as Lewis acid (electron pair acceptor).

Why are ligands important in chemistry?

In coordination chemistry, a ligand is an ion or molecule (functional group) that binds to a central atom to form a coordination complex. ... Ligands in a complex dictate the reactivity of the central atom, including ligand substitution rates, the reactivity of the ligands themselves, and redox.