electron transport chainmedical dictionary

<biochemistry, chemistry> A series of compounds that transfer electrons to an eventual donor with concomitant energy conversion.

One of the best studied is in the mitochondrial inner membrane, that takes NADH (from the tricarboxylic acid cycle) or FADH and transfers electrons via ubiquinone, cytochromes and various other compounds, to oxygen. Other electron transport chains are involved in photosynthesis.

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)