_EC 3.1.30.- Endoribonucleases active with either ribo- or deoxyribonucleic ac 30 PDB entries  
EC 3.-.-.- Hydrolases. [51,972 PDB entries]
EC 3.1.-.- Acting on ester bonds. [12,883 PDB entries]
EC 3.1.30.- Endoribonucleases active with either ribo- or deoxyribonucleic ac [30 PDB entries]
EC 3.1.30.1 Aspergillus nuclease S1. [25 PDB entries]
EC 3.1.30.2 Serratia marcescens nuclease. [5 PDB entries]