2.7.4.8 aciclovir (ACV-MP) - 2.7.4.8 ATP + dGMP - 2.7.4.8 ATP + ganciclovir - 2.7.4.8 ATP + GMP - 2.7.4.8 ATP + GMP signal transduction 2.7.4.8 ATP + GMP key enzyme of biosynthetic pathway of GTP or dGTP 2.7.4.8 ATP + GMP first step in 'cGMP-cycle' toward re-synthesis of cGMP 2.7.4.8 ATP + GMP regulation of cellular adhesion and signal transduction at sites of cell-cell contact 2.7.4.8 ATP + GMP guanylate kinase is an essential enzyme 2.7.4.8 dGMP + ATP -