cytochrome-c oxidase activity(GO:0004129) heme-copper terminal oxidase activity(GO:0015002) oxidoreductase activity, acting on a heme group of donors, oxygen as acceptor(GO:0016676)
oxidoreductase activity, acting on the CH-OH group of donors, disulfide as acceptor(GO:0016900) vitamin-K-epoxide reductase (warfarin-sensitive) activity(GO:0047057)