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G-protein coupled receptors contain ________ transmembrane alpha helices.(a) 2(b) 5(c) 7(d) 9The question was posed to me in exam.I would like to ask this question from Cell Signaling Systems topic in portion Cell Signaling and Signal Transduction of Cell Biology

Answer»

Right OPTION is (c) 7

The EXPLANATION: The G-protein COUPLED RECEPTORS (GPCRs) are a family of cell surface receptors that consist of 7 transmembrane alpha helices. These receptors translate the binding of extracellular MESSENGERS to the activation of intracellular GTP-binding proteins.



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