The 'fight or flight' hormone adrenaline — which is produced during times of stress — is an agonist of the β 2-adrenergic receptor (β 2 AR), a G-protein-coupled receptor (GPCR) that mediates ...
The binding of adrenaline to an adrenergic receptor initiates a cascade of reactions inside the cell. The signal transduction cascade begins when adenylyl cyclase, a membrane- bound enzyme ...
Alpha receptor agonists are substances that activate the sympathetic nervous system by stimulation of alpha receptors, similar to the effects of epinephrine and norepinephrine. Alpha receptors are ...
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