This entry represent the N-terminal region of SHab15497_00040, an Acinetobacter phage protein that catalyses the hydrolysis of dGTP into dGMP, which is needed among others for the first step of biosynthesis of dZTP (2-amino-2'-deoxyadenosine-5'- triphosphate) [1].

1: A widespread pathway for substitution of adenine by diaminopurine in phage genomes. Zhou Y, Xu X, Wei Y, Cheng Y, Guo Y, Khudyakov I, Liu F, He P, Song Z, Li Z, Gao Y, Ang EL, Zhao H, Zhang Y, Zhao S; Science. 2021;372:512-516. PMID:33926954