NifU-related protein; 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.

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.

Conserved hypothetical protein. Homology to rsc0810 of R. solanacearum of 71% (trembl|Q8Y180). InterPro: Uncharacterized protein family UPF0033 (IPR001455). Pfam: Uncharacterized protein family UPF0033. no signal peptide. no TMH; Family membership; Belongs to the sulfur carrier protein TusA family.

RrF2 family protein. These are small proteins of 12 to 18 kD which seem to contain a signal sequence, and may represent a family of probable transcriptional regulators. Similar to SWISSPROT: sprot|YOR2_AZOVI (50% Azotobacter vinelandii, hypothetical upf0074 protein) / TREMBL: trembl|Q8Y0M5 (72% Ralstonia solanacearum (Pseudomonas solanacearum), hypothetical protein rsc1018) Pfam: PF02082 Transcriptional regulator. TIGRFAM: TIGR00738 rrf2 family protein (Uncharacterized protein family UPF0074 / putative transcriptional regulator). Signal P reporting signal peptide. HTH reporting nucleic [...]

Putative NifQ protein. Homology to nifQ of A. vinelandii of 33% (sprot|NIFQ_AZOVI(SRS) NifQ is involved in early stages of the biosynthesis of the iron-molybdenum cofactor (FeMo-co), which is an integral part of the active site of dinitrogenase [2]. The conserved C-terminal cysteine residues may be involved in metal binding. Pfam: NifQ no signal peptide no TMHs; Family membership.

Putative CyaY protein; Involved in iron-sulfur (Fe-S) cluster assembly. May act as a regulator of Fe-S biogenesis.

Adenylyltransferase, putative; Dinucleotide-utilizing enzyme involved in molybdopterin and/or thiamine biosynthesis Belongs to the hesA/moeB/thiF family, by similarity. TIGR00292: thiazole biosynthesis enzyme; High confidence in function and specificity.

Fdx2 protein; Ferredoxin 2Fe-2S. Homology to fdx of E. coli of 70% (sprot|FER_ECOLI). Ferredoxin are iron-sulfur proteins that transfer electrons in a wide variety of metabolic reactions. Although the function of this ferredoxin is unknown it is probable that it has a role as a cellular electron transfer protein. Involved in the in vivo assembly of the Fe-S clusters in a wide variety of iron- sulfur proteins. InterPro: Ferredoxin (IPR001055); Adrenodoxin (IPR001055) Pfam: 2Fe-2S iorn-sulfur cluster binding domain no signal peptide no TMHs; High confidence in function and specificity.

SseA: putative thiosulfate sulfurtransferase (rhodanese-like protein) [EC:2.8.1.1]. This protein transfers a sulfur ion to cyanide or to other thiol compounds. Also has weak rhodanese activity (130-fold lower). Its participation in detoxification of cyanide may be small. May be involved in the enhancement of serine sensitivity. Probable 3-mercaptopyruvate sulfurtransferase (EC 2.8.1.2) (Rhodanese- like protein) (MST). InterPro: Rhodanese/cdc25 fold; High confidence in function and specificity.