Assays for measuring the activity of this compound based on BRET and FRET methods include CAMYEL and FlCRhR (10[1])(“flicker”). By forcing one enzyme to bind to calmodulin, a virulence factor produced by members of the genus Bordetella increases levels of this compound. The enzyme that produces this compound can be stimulated using Forskolin, and is activated by the A subunit of cholera toxin, which increases intracellular levels of this compound by over 100-fold. Low glucose levels cause this (-5[1])molecule to allosterically bind (10[1])to CRP (-5[1])as part of (10[1])a positive regulation mechanism. Phosphodiesterases most commonly act on this compound, which is necessary (10[1])for the activity of protein kinase A. (10[2])For 10 points, name this secondary messenger molecule made from ATP by adenylyl cyclase. (0[2])■END■ (10[1]0[1])