_EC 3.1.8.- Phosphoric triester hydrolases. 136 PDB entries  
EC 3.-.-.- Hydrolases. [51,972 PDB entries]
EC 3.1.-.- Acting on ester bonds. [12,883 PDB entries]
EC 3.1.8.- Phosphoric triester hydrolases. [136 PDB entries]
EC 3.1.8.1 aryldialkylphosphatase. [136 PDB entries]
EC 3.1.8.2 Transferred entry: 3.8.2.2. [-]

[-] signifies that there are no PDB entries for the given enzyme subclass