. "\"Enables the directed movement of electrons from the CoQH2-cytochrome c reductase complex and the cytochrome c oxidase complex.\" [GOC:ai, ISBN:0716731363]" . . "electron transporter, transferring electrons from CoQH2-cytochrome c reductase complex and cytochrome c oxidase complex activity" . . "cytochrome" . "cytochrome c" .