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.
Acting on a heme group of donors
With a nitrogenous group as acceptor
The following ENZYME entries belong to class 1.9.6.-:
184.108.40.206 Nitrate reductase (cytochrome)