beta-adrenoreceptor

…receptors, or alpha receptors and beta receptors, respectively. In general, activation of alpha-adrenergic receptors results in the constriction of blood vessels, contraction of uterine muscles, relaxation of intestinal muscles, and dilation of the pupils. Activation of beta-adrenergic receptors increases heart rate and stimulates cardiac contraction (thereby increasing cardiac output), dilates…

It was known that beta receptors in the heart muscle, when stimulated by the hormones epinephrine and norepinephrine, cause the heartbeat to quicken and increase the strength of the heart’s contractions, thus increasing that organ’s oxygen requirement. Black developed a drug that would block the beta receptor sites, thus…

…are known as alpha-adrenergic and beta-adrenergic receptors, or alpha receptors and beta receptors, respectively (see human nervous system: Anatomy of the human nervous system). In general, activation of alpha-adrenergic receptors results in the constriction of blood vessels, contraction of uterine muscles, relaxation of intestinal muscles, and dilation of the pupils.…

…DNA sequence for the mammalian beta₂-adrenergic receptor from fragments of genomic DNA that had been amplified in genetically engineered bacteria. (Lefkowitz’s team previously had struggled to sequence the receptor because of its limited natural production in cells.) Kobilka’s feat demonstrated his talent for technological innovation and made possible the team’s…

The beta-adrenergic receptor would later become a model system for the study of GPCRs.