TCDB is operated by the Saier Lab Bioinformatics Group

3 component system: The Proton-translocating Quinol:Cytochrome c Reductase (QCR) Superfamily

P00157 CYB aka MTCYB aka COB aka CYTB
P13272 UCRI aka UQCRFS1
P00125 Cytochrome c1, heme protein, mitochondrial