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

OVERVIEW
Flythrough Tour
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MOLECULAR PROCESSES
Transcription
Regulated Transcription
mRNA Processing
mRNA Splicing
Translation
Lac Operon
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CELLULAR PROCESSES
Protein Trafficking
Protein Modification
Protein Recycling
Insulin Signaling
Constitutive Secretion
Regulated Secretion
Mitochondrial Protein Transport
Mitosis
Meiosis
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CELLULAR ENERGY CONVERSION
Atp Synthase (Gradients)
Electron Transport Chain
Photosynthesis (Light Reaction)
Photosystem II
Glycolysis (Overview)
Glycolysis (Reactions)
Citric Acid Cycle (Overview)
Citric Acid Cycle (Reactions)
Energy Consumption
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HOME > ETC > ADVANCED LOOK > 1.) NADH > 2.) CYTOCHROME b-c1 > 3.) CYTOCHROME OXIDASE
ETC: Advanced Look --> 3.) Cytochrome Oxidase

Cytochrome oxidase is the third and final cytochrome protein 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.

The mobile carrier protein cytochrome c (purple) transfers electrons, one at a time, to cytochrome oxidase (orange). Four electrons must be transferred to the oxidase comples in order for the next major reaction to occur.

The next major event is the reaction of the four electrons, a molecule of O2 (oxygen), and eight protons.

The reaction results in the pumping of four hydrogen ions across the inner membrane into the intermembrane space, and the release of two H20 (water) molecules into the matrix space.

NEXT --> 4.) ATP SYNTHASE

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