Both G < sub > α </ sub >- GTP and G < sub > βγ </ sub > can now activate separate and / or the same effector molecules, thus sending the signal further down the signal reaction chain.

Both G < sub > α </ sub >- GTP and G < sub > βγ </ sub > can then activate different signaling cascades ( or second messenger pathways ) and effector proteins, while the receptor is able to activate the next G protein.

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