electron transport chain of the mitochondrian

The electron transport chain in the mitochondria is a group of four large multiprotein complexes that span the inner mitochondrial membrane. As the name implies its function is to transport electrons from either NADH or FADH2 to their final repository which is water molecules. Thus water is synthesized during oxidative mitochondrial function.

The electron transport chain includes four large multiprotein complexs:

The diagram below illustrates the direction of electron transport within the electron transport chain

 

The electron transport chain is also a series of coupled oxidation-reduction reactions.

As one substance is enzymatically oxidized another becomes enzymatically reduced. This process continues until the electrons are found in their final reposity with is water.

The above diagram illustrates the path of electron flow (in red) in the electron transport chain

Also several important features of the electron transport chain are implied: