<p>Quinol-cytochrome c reductases constitute a large family of enzymes which transfer electrons from quinols to cytochrome c, translocating protons across membranes in the process. They function in bacterial and mitochondrial repiratory chains, and also the photosythetic electron transfer chains of bacteria and plastids. These enzymes share a common functional core consisting of cytochrome b, a Reiske Fe-S protein, and cytochrome c.</p><p>This entry represents the cytochrome c subunit QcrC, found in a number of Gram-positive bacteria. QcrC, a dihaem cytochrome, forms part of a quinol oxidase supercomplex in these bacteria [<cite idref="PUB00035558"/>, <cite idref="PUB00035559"/>].</p> Ubiquinol-cytochrome-c reductase, cytochrome c subunit