_EC 3.1.5.- Triphosphoric monoester hydrolases. 16 PDB entries  
EC 3.-.-.- Hydrolases. [51,972 PDB entries]
EC 3.1.-.- Acting on ester bonds. [12,883 PDB entries]
EC 3.1.5.- Triphosphoric monoester hydrolases. [16 PDB entries]
EC 3.1.5.1 dGTPase. [16 PDB entries]