_EC 1.2.5.- With a quinone or similar compound as acceptor. 13 PDB entries  
EC 1.-.-.- Oxidoreductases. [21,435 PDB entries]
EC 1.2.-.- Acting on the aldehyde or oxo group of donors. [1,276 PDB entries]
EC 1.2.5.- With a quinone or similar compound as acceptor. [13 PDB entries]
EC 1.2.5.1 pyruvate dehydrogenase (quinone). [5 PDB entries]
EC 1.2.5.2 aldehyde dehydrogenase (quinone). [-]
EC 1.2.5.3 aerobic carbon monoxide dehydrogenase. [8 PDB entries]

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