M2 receptor x M5 receptor x β2-adrenergic receptor x M3 receptor x M4 receptor x M1 receptor
Muscarinic acetylcholine receptor M2 x Muscarinic acetylcholine receptor M5 x Beta-2 adrenergic receptor x Muscarinic acetylcholine receptor M3 x Muscarinic acetylcholine receptor M4 x Muscarinic acetylcholine receptor M1