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The Cytochrome b/c1 complex

©1999 Timothy Paustian, University of Wisconsin-Madison

An animation of proton translocation. In this mechanism one of the electrons from the quinone passes to the Rieske ISP proteins FeS center and the second follows a different path passing through the two heme groups of the b cytochrome. One of the two quinones is reduced with the electrons from the heme of the b cytochrome and is ready for another round. Note that the quinone molecules have been enlarged to improve clarity.

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