The electron transport chain (ETC) involves several important protein complexes. To emphasize the actions surrounding these complexes, the Advanced Look section has been divided according to the order in which the proteins are engaged.

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

Electrons are first donated to this protein complex by NADH. More detail...		The second protein complex in the chain pumps protons as it transfers electrons. More detail...		This is the last of the electron transporting proteins--pumps protons and creates water. More detail...		This complex uses the proton gradient maintained by the ETC to synthesize ATP. More detail...