_EC 3.4.11.0 ????? 0 PDB entries  
EC 3.-.-.- Hydrolases. [51,972 PDB entries]
EC 3.4.-.- Acting on peptide bonds (peptidases). [15,920 PDB entries]
EC 3.4.11.- Aminopeptidases. [590 PDB entries]
EC 3.4.11.0 ????? [-]

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