Putative ACR involved in intracellular sulfur reduction; Part of a sulfur-relay system required for 2-thiolation of 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at tRNA wobble positions. Accepts sulfur from TusA and transfers it in turn to TusE.

Putative sulfite reductase, gamma subunit; Part of a sulfur-relay system required for 2-thiolation of 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at tRNA wobble positions. Could accept sulfur from TusD (By similarity).

Sulfur transfer protein (from cys to ThiS and from IscS to U8-tRNA); Catalyzes the ATP-dependent transfer of a sulfur to tRNA to produce 4-thiouridine in position 8 of tRNAs, which functions as a near-UV photosensor. Also catalyzes the transfer of sulfur to the sulfur carrier protein ThiS, forming ThiS-thiocarboxylate. This is a step in the synthesis of thiazole, in the thiamine biosynthesis pathway. The sulfur is donated as persulfide by IscS.

Putative regulator; Similar to E. coli orf, hypothetical protein (AAC76371.1); Blastp hit to AAC76371.1 (244 aa), 97% identity in aa 5 - 244.

Putative SufE protein; Participates in cysteine desulfuration mediated by SufS. Cysteine desulfuration mobilizes sulfur from L-cysteine to yield L- alanine and constitutes an essential step in sulfur metabolism for biosynthesis of a variety of sulfur-containing biomolecules. Functions as a sulfur acceptor for SufS, by mediating the direct transfer of the sulfur atom from the S-sulfanylcysteine of SufS, an intermediate product of cysteine desulfuration process; Belongs to the SufE family.

Putative SufE protein probably involved in Fe-S center assembly; Similar to E. coli orf, hypothetical protein (AAC75853.1); Blastp hit to AAC75853.1 (147 aa), 88% identity in aa 1 - 144.

Small ubiquitous protein required for normal growth; Sulfur carrier protein involved in sulfur trafficking in the cell. Part of a sulfur-relay system required for 2-thiolation during synthesis of 2-thiouridine of the modified wobble base 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) in tRNA. Interacts with IscS and stimulates its cysteine desulfurase activity. Accepts an activated sulfur from IscS, which is then transferred to TusD, and thus determines the direction of sulfur flow from IscS to 2-thiouridine formation. Also appears to be involved in sulfur transfer for the biosynthes [...]

Putative ACR protein; Involved in intracellular sulfur reduction; similar to E. coli orf, hypothetical protein (AAC74303.1); Blastp hit to AAC74303.1 (117 aa), 92% identity in aa 1 - 117.

Putative phosphate starvation-inducible protein, ATP-binding; Similar to E. coli putative ATP-binding protein in pho regulon (AAC73761.1); Blastp hit to AAC73761.1 (359 aa), 96% identity in aa 1 - 359.