After the activation of a G-protein,the sequence of signalling events consists of:
A) effector enzyme, second messenger, protein kinase, substrate protein.
B) second messenger, effector enzyme, protein kinase substrate protein.
C) effector enzyme, protein kinase, second messenger, substrate protein.
D) substrate protein, protein kinase, second messenger, effector enzyme.

Question

Quizplus · Accepted Answer

The correct sequence after a G-protein is activated is: effector enzyme activation, production of second messenger, activation of protein kinase, and then the phosphorylation or action on the substrate protein. This sequence ensures the amplification and specificity of the cellular response to the initial signal.

After the Activation of a G-Protein,the Sequence of Signalling Events