The crystal structure of a second G protein–coupled receptor sheds light on these key ... This effectively shields the binding site from the extracellular compartment (Fig.

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 addition of β-adrenergic receptor antagonists to a medical regimen for heart failure that includes angiotensin-converting enzyme (ACE) inhibitors as background therapy has been associated ...