VCAC: Cellular Processes: Electron Transport Chain: Advanced Look: Cytochrome b-c1

Questions? Comments? Please contact Dr. Phillip McClean or Christina Johnson.

Flythrough Tour

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CELLULAR PROCESSES

Atp Synthase

Electron Transport Chain

Protein Trafficking

Protein Modification

Protein Recycling

Constitutive Secretion

Regulated Secretion

Mitochondrial Protein Transport

Photosynthesis

Photosystem II

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MOLECULAR PROCESSES

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U.S. DEPARTMENT OF EDUCATION

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HOME > ETC > ADVANCED LOOK > 1.) NADH > 2.) CYTOCHROME b-c1

ETC: Advanced Look --> 2.) Cytochrome b-c1

Cytochrome b-c1 is the second major protein complex in the electron transport chain. Clicking on each of the thumbnail images will bring up a larger, labeled version of the described scene.

To see the Flash movie for the following sequence of images, click here.

	Ubiquinone (pink) delivers two electrons at a time to cytochrome b-c1 (red).
	As each electron makes its way through the complex, a hydrogen ion, or proton, is pumped from the matrix space of the mitochondria into the intermembrane space, helping to maintain the proton gradient.
	After affecting the pumping of a proton across the membrane, the electron leaves cytochrome b-c1 and enters the mobile carrier protein, cytochrome c (purple).

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