_EC 3.1.27.- Endoribonucleases producing other than 5'-phosphomonoesters. 7 PDB entries  
EC 3.-.-.- Hydrolases. [51,952 PDB entries]
EC 3.1.-.- Acting on ester bonds. [12,882 PDB entries]
EC 3.1.27.- Endoribonucleases producing other than 5'-phosphomonoesters. [7 PDB entries]
EC 3.1.27.1 Transferred entry: 4.6.1.19. [4 PDB entries]
EC 3.1.27.2 Transferred entry: 4.6.1.22. [-]
EC 3.1.27.3 Transferred entry: 4.6.1.24. [2 PDB entries]
EC 3.1.27.4 Transferred entry: 4.6.1.20. [-]
EC 3.1.27.5 Transferred entry: 4.6.1.18. [-]
EC 3.1.27.6 Transferred entry: 4.6.1.21. [-]
EC 3.1.27.7 ribonuclease F. [-]
EC 3.1.27.8 ribonuclease V. [-]
EC 3.1.27.9 Transferred entry: 4.6.1.16. [1 PDB entries]
EC 3.1.27.10 Transferred entry: 4.6.1.23. [-]

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