Keywords protein kinase A phosphorylation homeostasis phosphodiesterase calcium signaling Research topic(s) CP: Microbiology CP: Molecular biology Introduction Toxoplasma gondii is an obligate intracellular parasite that is capable of infecting virtually any nucleated cell in a wide variety of warm-blooded animals and causing disease in humans and animals worldwide.1 Host cell invasion occurs by gliding motility, apical attachment that is mediated by secreted adhesins, and penetration to...