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SUF system FeS assembly protein, NifU family Three iron-sulfur cluster assembly systems are known so far. ISC is broadly distributed while NIF tends to be associated with nitrogenase in nitrogen-fixing bacteria. The most recently described is SUF, believed to be important to maintain the function during aerobic stress of enzymes with labile Fe-S clusters. It is fairly widely distributed. This family represents one of two different proteins proposed to act as a scaffold on which the Fe-S cluster is built and from which it is transferred. [Biosynthesis of cofactors, prosthetic groups, and carriers, Other]
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Jiyao W et al.(2023). "The conserved domain database in 2023.",