has participant molecular_function toxin activity toxin receptor binding Interacting selectively with one or more biological molecules in another (target) organism, initiating pathogenesis (leading to an abnormal, generally detrimental state) in the target organism. The activity should refer to an evolved function of the active gene product, i.e. one that was selected for. Examples include the activity of botulinum toxin, and snake venom. http://purl.obolibrary.org/obo/go.owl toxin