InterPro domain: IPR004192

The ubiquinol cytochrome c reductase (cytochrome bc1) complex is a respiratory chain that generates an electrochemical potential coupled to ATP synthesis. The bc1 complex contains 11 subunits, 3 respiratory subunits (cytochrome B, cytochrome C1, Rieske protein), 2 core proteins and 6 low-molecular weight proteins [ 1 ]. Each subunit of the cytochrome bc1 complex provides a single helix to make up the transmembrane region of the complex.

This entry represents the transmembrane domain of the iron-sulfur subunit Rieske.

1. Complete structure of the 11-subunit bovine mitochondrial cytochrome bc1 complex. Science 281, 64-71