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Iron-sulfur cluster

An iron-sulfur cluster is a structural motif found in certain metalloproteins, such as the ferrodoxins, as well as NADH dehydrogenase and Coenzyme Q - cytochrome c reductase of the electron transfer system. There are at least three distinct kinds of iron-sulfur clusters:

Iron-sulfur clusters can be involved in oxidation-reduction reactions, or can be involved in catalysis.

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Examples of iron-sulfur clusters