_EC 5.1.1.0 ????? 0 PDB entries  
EC 5.-.-.- Isomerases. [5,284 PDB entries]
EC 5.1.-.- Racemases and epimerases. [683 PDB entries]
EC 5.1.1.- Acting on amino acids and derivatives. [236 PDB entries]
EC 5.1.1.0 ????? [-]

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