recently the genes for several hormone receptors that interact with guanine nucleotide binding proteins ( g proteins ) have been cloned , including the hamster beta 2-adrenergic receptor ( beta 2ar ) , a human beta ar , the turkey erythrocyte beta ar and the porcine muscarinic acetylcholine receptor ( mar ) .
C0001643
beta 2-adrenergic receptor
C0086418
human