FeS cluster assembly scaffold IscU; A scaffold on which IscS assembles Fe-S clusters. It is likely that Fe-S cluster coordination is flexible as the role of this complex is to build and then hand off Fe-S clusters.

Putative cysteine desulfurase; Master enzyme that delivers sulfur to a number of partners involved in Fe-S cluster assembly, tRNA modification or cofactor biosynthesis. Catalyzes the removal of elemental sulfur atoms from cysteine to produce alanine. Functions as a sulfur delivery protein for Fe-S cluster synthesis onto IscU, an Fe-S scaffold assembly protein, as well as other S acceptor proteins; Belongs to the class-V pyridoxal-phosphate-dependent aminotransferase family. NifS/IscS subfamily.

Iron-sulfur cluster assembly accessory protein; Identified by match to protein family HMM PF01521; match to protein family HMM TIGR00049; Belongs to the HesB/IscA family.

Fe-S protein assembly chaperone HscA; Chaperone involved in the maturation of iron-sulfur cluster- containing proteins. Has a low intrinsic ATPase activity which is markedly stimulated by HscB.

SUF system FeS assembly protein, NifU family; Identified by match to protein family HMM PF01592; match to protein family HMM TIGR01994.

Conserved hypothetical protein; Identified by similarity to GB:CAD84769.1; match to protein family HMM PF00175.

Frataxin family protein; Belongs to the frataxin family.

Putative cysteine desulfurase; Identified by similarity to SP:P05341; match to protein family HMM PF00266; match to protein family HMM PF01212.

NADH dehydrogenase I, I subunit; NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be ubiquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient.