Target-based classification of drugs [BR:br08310] G Protein-coupled receptors Rhodopsin family Adrenaline ADRA1 [HSA:148 147 146] [KO:K04135 K04136 K04137] D08029 Guanadrel (INN) ADRA2 [HSA:150 151 152] [KO:K04138 K04139 K04140] D08029 Guanadrel (INN)