A new class EC 7, Translocases, has been added to the EC list. It will be part of ENZYME from release 2018_10. Read more about EC 7 here.
Oxidoreductases
Acting on the CH-CH group of donors
With a disulfide as acceptor
The following ENZYME entries belong to class 1.3.4.-:
1.3.4.1 Fumarate reductase (CoM/CoB)