Which is common feature shared between the GG-subunit of a G-protein complex and the c-ras protein? Select one:
A. intrinsic GTPase activity
B. membrane associated protein
C. signal transduction
D. All of these
E. None of these

The GTPase activity is the ability to hydrolyze guanine triphosphate (GTP) to guanine diphosphate (GDP) and thus release chemical energy. The G-proteins are heterotrimeric protein complexes composed by alpha, beta and gamma (GG) subunits that form a complex located within the cell which is activated by protein-coupled receptors (GPCRs) localized in the cell membrane. The alpha subunit of heterotrimeric G proteins shares homology with the middle region of the c-ras protein, which is responsible for its GTPase activity. The c-ras protein contains a GTP binding motif that functions in mediating signal transduction pathways, which is attached to the cell membrane. When c-ras is inactive, it is bound to GDP, while c-ras is active when bound to GTP.

Which is common feature shared between the GG-subunit of a G-protein complex and the c-ras protein? Select one: A. intrinsic GTPase activity B. membrane associated protein C. signal transduction D. All of these E. None of these

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Which is common feature shared between the GG-subunit of a G-protein complex and the c-ras protein? Select one:
A. intrinsic GTPase activity
B. membrane associated protein
C. signal transduction
D. All of these
E. None of these