Receptor agonists

Cholesterol is the principal sterol of all animals, distributed in body tissues, especially the brain and spinal cord, and in animal fats and oils.

thumb|400 px|Dose response curves of a full agonist, partial agonist, neutral antagonist, and inverse agonist An agonist is a chemical that activates a receptor to produce a biological response. Receptors are cellular proteins whose activation causes the cell to modify what it is currently doing. In contrast, an antagonist blocks the action of the agonist, while an inverse agonist causes an action opposite to that of the agonist.

agent in biochemistry

right|thumb|320px|Efficacy spectrum of receptor ligands.

behaviour of substances

agonist of some receptor subtype that's produced in the living organism, tissue or cell

type of agonist that binds permanently to a receptor in such a manner that the receptor is permanently activated. It is distinct from a mere (reversible) agonist in that the association of an agonist to a receptor is reversible