One example of this class of proteins is a component of several cytochrome complexes called the Rieske protein; it accepts electrons from ubiquinone and is unusual in that one of the ions in its central cluster is coordinated by two histidines rather than two cysteines.
The biosynthesis of this class of proteins involves three divergent systems, including Nif and Isc. Due to their ability to catalyze carbon-carbon bond formation, Wachtershauser proposed a theory of the origin of life based on the types of reactions catalyzed by this class of proteins. Their active sites come in several structures, including diamond, butterfly, and cluster cubes. One example of this class of proteins is a component of several cytochrome complexes called the Rieske protein; it accepts electrons from ubiquinone and is unusual in that one of the ions in its central cluster is coordinated by two histidines rather than two cysteines. In one example of this class of enzyme, one of its namesake cofactors acts as a Lewis acid during the dehydration of citrate; that enzyme is aconitase. For 10 points, identify this class of proteins which includes the ferredoxins and is named for the two elements coordinated by their active sites.
The biosynthesis of this class of proteins involves three divergent systems, including Nif and Isc.
iron-sulfur proteins