hormone binding cation binding epinephrine binding https://github.com/geneontology/go-ontology/issues/21211 adrenaline binding GO:0051379 Binding to epinephrine, a hormone produced by the medulla of the adrenal glands that increases heart activity, improves the power and prolongs the action of muscles, and increases the rate and depth of breathing. It is synthesized by the methylation of norepinephrine. molecular_function catecholamine binding