_EC 1.3.5.- With a quinone or related compound as acceptor. 229 PDB entries  
EC 1.-.-.- Oxidoreductases. [21,435 PDB entries]
EC 1.3.-.- Acting on the CH-CH group of donors. [1,317 PDB entries]
EC 1.3.5.- With a quinone or related compound as acceptor. [229 PDB entries]
EC 1.3.5.1 succinate dehydrogenase. [96 PDB entries]
EC 1.3.5.2 dihydroorotate dehydrogenase (quinone). [132 PDB entries]
EC 1.3.5.3 protoporphyrinogen Ix dehydrogenase (quinone). [-]
EC 1.3.5.4 Transferred entry: 1.3.5.1. [-]
EC 1.3.5.5 15-cis-phytoene desaturase. [1 PDB entries]
EC 1.3.5.6 9,9'-di-cis-zeta-carotene desaturase. [-]

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