試題詳解

52. Which description for G protein-coupled receptors (GPCRs) is NOT correct?
(A) G protein-coupled receptors (GPCRs) have seven transmembrane beta-sheets domains.
(B) GPCRs act through heterotrimeric G proteins.
(C) GPCRs are found only in eukaryotes, including yeast, choanoflagellates, and animals.
(D) GPCRs are involved in many diseases.