Many hormones exert their influence on target cells by binding to G protein-coupled receptors (GPCR) that are coupled to cytoplasmic G proteins. G proteins are composed of the following subunits:

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Physiology Test Question

Many hormones exert their influence on target cells by binding to G protein-coupled receptors (GPCR) that are coupled to cytoplasmic G proteins. G proteins are composed of the following subunits:

	(A) α
	(B) β
	(C) δ
	(D) ε
	(E) γ

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Posted: Sunday, March 6, 2016