CH3 i HO CH2CH2NHs CHs-N-CH2CH2O-C-CH3 CH3 HN HN N C00 NH. PP HaN-CH H guanylyl 0-CH20. H H H CH2 H H H OHOH OH CH2 H 6 0 GTP Guanosine 3,5'-cyclic monophosphate C00 OH H (cGMP) OH HO NH2 NH2 PP CH2 0 CH2 adenylyl 0 cy℃lase Some signal H OHOH 0= 0 OH molecules 0 ATP Adenosine 3,5'-cyclic monophosphate (cAMP)Some signal molecules