The β2-adrenergic receptor is a G protein-coupled receptor that is primarily involved in regulating smooth muscle relaxation, bronchodilation, and cardiac function. It is a key target for medications used to treat conditions such as asthma, chronic obstructive pulmonary disease (COPD), and heart failure. Researchers study the β2-adrenergic receptor to better understand its structure and function, as well as to develop novel therapeutics that can selectively target this receptor for improved treatment outcomes. Studies in this research area may involve molecular biology, pharmacology, biochemistry, and drug development.