_EC 1.6.4.- With a disulfide as acceptor. 0 PDB entries  
EC 1.-.-.- Oxidoreductases. [21,435 PDB entries]
EC 1.6.-.- Acting on Nadh or nadph. [505 PDB entries]
EC 1.6.4.- With a disulfide as acceptor. [-]
EC 1.6.4.1 Transferred entry: 1.8.1.6. [-]
EC 1.6.4.2 Transferred entry: 1.8.1.7. [-]
EC 1.6.4.3 Transferred entry: 1.8.1.4. [-]
EC 1.6.4.4 Transferred entry: 1.8.1.8. [-]
EC 1.6.4.5 Transferred entry: 1.8.1.9. [-]
EC 1.6.4.6 Transferred entry: 1.8.1.10. [-]
EC 1.6.4.7 Transferred entry: 1.8.1.11. [-]
EC 1.6.4.8 Transferred entry: 1.8.1.12. [-]
EC 1.6.4.9 Transferred entry: 1.8.1.13. [-]
EC 1.6.4.10 Transferred entry: 1.8.1.14. [-]

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