A new class EC 7, Translocases, has been added to the EC list. It will be part of ENZYME from release 2018_09. Read more about EC 7 here.
The following ENZYME entries belong to class 1.7.3.-:
184.108.40.206 Nitroalkane oxidase 220.127.116.11 Acetylindoxyl oxidase 18.104.22.168 Factor independent urate hydroxylase 22.214.171.124 Transferred entry: 126.96.36.199 and 188.8.131.52 184.108.40.206 3-aci-nitropropanoate oxidase 220.127.116.11 Hydroxylamine oxidase (cytochrome)