In some slime molds, the release of this substance organizes aggregation, while in bacteria it binds to (*) catabolite gene activator protein.  
Its production may be stimulated by administration of the diterpene forskolin, and in Euglena gracilis, its production is activated by exposure to light.   In some slime molds, the release of this substance organizes aggregation, while in bacteria it binds to (*) catabolite gene activator protein.  It is decomposed by phosphodiesterases; in addition, its targets are often desensitized by phosphorylation via negative feedback. Released upon activation of a G protein by a G protein coupled receptor, its main role is to activate enzymes in the protein kinase A family.  For 10 points, name this second messenger signaling molecule, a derivative of a nucleotide.
Its production may be stimulated by administration of the diterpene forskolin, and in Euglena gracilis, its production is activated by exposure to light.   
{cyclic adenosine monophosphate} or {c}yclic {AMP} (2) [AU]