Predicted to enable 3',5'-cyclic-nucleotide phosphodiesterase activity. Predicted to be involved in signal transduction. Is an ortholog of C. elegans pde-4. In C. elegans, pde-4 is involved in several processes, including adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway; negative regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway; and sleep.