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.
Catalyzing the reaction X-H + Y-H = 'X-Y'
With a disulfide as acceptor
The following ENZYME entries belong to class 1.21.4.-:
184.108.40.206 D-proline reductase 220.127.116.11 Glycine reductase 18.104.22.168 Sarcosine reductase 22.214.171.124 Betaine reductase