When the GTP Guanosine triphosphate is bound onto that AlphaG protein, it increases its affinity for that adenolid cyclist. And so it goes on and binds until special site found on the intracellular portion of this cyclist. And once it binds, it increases its catalytic activity and causes it to basically transform the ATP into the cyclic adenosine monophosphate molecules. So ultimately, what the cell has to do is somehow remove the GTP and bind the GDP Guanosine diphosphate. Because once the Guanosine diphosphate binds onto the alphagy protein, that will cause a decrease in the affinity of the alphagy protein for that cyclist and that will cause it to actually detach, terminating this cyclist's ability to form those cyclic adenosine monophosphate molecules. So it turns out that this alphagy protein actually has a built in timer.