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electron transport chain
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electron transport chain

Arrangement of substances within the living cell that takes part in energy production. Electron transport is the means by which reduced flavoproteins (FP) and the coenzyme NAD are oxidized in steps, such that energy from certain steps can be used for the manufacture of ATP by oxidative phosphorylation.

The electron transport chain is a collection of cytochromes and flavoproteins situated close to each other on the inner membrane of the mitochondria. This allows for the proper flow of electrons from one cytochrome to another. A compound such as NADH2 or FPH2 loses hydrogen atoms at the beginning of the chain, returning to its original form, NAD or FP. The electrons pass down the chain of cytochromes, alternately reducing and oxidizing the cytochrome as the electron arrives and moves on to the next one, until finally oxygen is reached and water produced. Hence the process is aerobic, that is, requiring oxygen.



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It will publish experimental and basic research targeted to scientists in physical chemistry of nanoparticles and nanostructures, surfaces, interfaces, catalysts, electron transport, optical and electronic devices, and energy conservations and storage.
In the November 2003 Journal of Neuroscience, Emory researchers Tim Greenamyre and Todd Sherer report that rotenone does its damage within the neuron's mitochondria by inhibiting a crucial enzyme in the electron transport chain known as complex I.
Lisanti's study of electron transport in microscopic gold wires had already snared her the top prize in the Intel Science Talent Search last March (SN: 3/17/01, p.
 
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