General function:

Involved in metabolic process

Specific function:

Catalyzes the removal of elemental sulfur and selenium atoms from cysteine and selenocysteine to produce alanine. Functions as a sulfur delivery protein for NAD, biotin and Fe-S cluster synthesis. Transfers sulfur on 'Cys-456' of thiI in a transpersulfidation reaction. Transfers sulfur on 'Cys-19' of tusA in a transpersulfidation reaction. Functions also as a selenium delivery protein in the pathway for the biosynthesis of selenophosphate

Gene Name:

iscS

Uniprot ID:

P0A6B7

Molecular weight:

45089

Reactions

General function:

Involved in nucleotide binding

Specific function:

Catalyzes the adenylation by ATP of the carboxyl group of the C-terminal glycine of sulfur carrier protein ThiS

Gene Name:

thiF

Uniprot ID:

P30138

Molecular weight:

26970

Reactions

General function:

Involved in RNA binding

Specific function:

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

Gene Name:

thiI

Uniprot ID:

P77718

Molecular weight:

54973

Reactions

General function:

Involved in catalytic activity

Specific function:

Catalyzes the rearrangement of 1-deoxy-D-xylulose 5- phosphate (DXP) to produce the thiazole phosphate moiety of thiamine. Sulfur is provided by the thiocarboxylate moiety of the carrier protein ThiS. In vitro, sulfur can be provided by H(2)S

Gene Name:

thiG

Uniprot ID:

P30139

Molecular weight:

26896

Reactions

General function:

Coenzyme transport and metabolism

Specific function:

Is the sulfur donor in the synthesis of the thiazole phosphate moiety of thiamine phosphate

Gene Name:

thiS

Uniprot ID:

O32583

Molecular weight:

7311

General function:

Involved in catalytic activity

Specific function:

Catalyzes the radical-mediated cleavage of tyrosine to dehydroglycine and p-cresol

Gene Name:

thiH

Uniprot ID:

P30140

Molecular weight:

43320

Reactions