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Iron-sulfur cluster definition
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A unit comprising two or more iron atoms and bridging sulfide ligands in an iron-sulfur protein. The recommended designation of a cluster consists of the iron and sulfide content, in square brackets, for example [2Fe-2S], [3Fe-4S]. The possible oxidation levels are indicated by the net charge excluding the ligands, for example a [4Fe-4S]2+; [4Fe-4S]1+ (or [4Fe-4S]2+;1+)cluster.

See also:
isocoumarins definition
isoselenocyanates definition
Isoenzymes definition
island definition
isoselenocyanates definition
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