Updated project metadata. Apicomplexans are ubiquitous parasites of humans and cause diseases including toxoplasmosis, malaria, and cryptosporidiosis. Protein kinase G (PKG) possesses unique features in this phylum of parasites and is a demonstrated drug target. Phosphodiesterase inhibitors increase the concentration of cGMP in cells, thereby activating PKG. Here, we generate a phosphoproteome from parasites treated with the phosphodiesterase inhibitor zaprinast. We additionally use an auxin-inducible degron system to deplete parasites of PKG during this treatment.