Beta-blockers are a class of drugs that target beta-adrenergic receptors, blocking the action of epinephrine and norepinephrine. These drugs are used to treat heart conditions, hypertension, glaucoma, and migraine headaches and are also used off-label to alleviate stage fright in performers. Since the beta-adrenergic receptor is a GPCR, what intracellular event is prevented by the use of a beta-blocker?
A. Transport of the receptor-hormone complex into the cell and the nucleus, where it would regulate transcription
B. A protein kinase cascade, initiated by the receptor's intracellular kinase domain
C. A protein phosphatase cascade, initiated by the receptor's intracellular phosphatase domain
D. Release of an activated G protein subunit bound to GTP
Answer: D
You might also like to view...
Large proteoglycan aggregates may contain a hyaluronin molecule bound to the core protein of multiple proteoglycan molecules.
a. true b. false
Ebola is a_____
a) orthomyxovirus b) filovirus c) rhinovirus d) retrovirus
A monohybrid cross is a mating between two individuals that are both
A. homozygous for one gene. B. heterozygous for one gene. C. homozygous for two genes. D. heterozygous for two genes. E. None of the answer choices is correct. Accessibility:
True or False: Getting a flu vaccine guarantees individuals will not get the flu.
Answer the following statement true (T) or false (F)