Thiosulfate—dithiol sulfurtransferase

Thus, the two substrates of this enzyme are thiosulfate and dithioerythritol, whereas its 3 products are sulfite, 4,5-cis-dihydroxy-1,2-dithiacyclohexane, and sulfide.

This enzyme belongs to the family of transferases, specifically the sulfurtransferases, which transfer sulfur-containing groups. The systematic name of this enzyme class is thiosulfate:dithioerythritol sulfurtransferase. Other names in common use include thiosulfate reductase, and TSR. This enzyme participates in sulfur metabolism.

References

Schmidt A, Erdle I, Gamon B (1984). "Isolation and characterization of thiosulfate reductases from the green alga Chlorella fusca". Planta. 162: 243–249. doi:10.1007/BF00397446.

Transferases: sulfur-containing group (EC 2.8)

2.8.1: Sulfurtransferases	Thiosulfate sulfurtransferase Rhodanese 3-mercaptopyruvate sulfurtransferase thiosulfate—thiol sulfurtransferase tRNA sulfurtransferase thiosulfate—dithiol sulfurtransferase biotin synthase cysteine desulfurase

2.8.2: Sulfotransferases	Alcohol sulfotransferase Tyrosylprotein sulfotransferase Aryl sulfotransferase

2.8.3: CoA-transferases	Propionate CoA-transferase

2.8.4: Alkylthio	Coenzyme-B sulfoethylthiotransferase

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list)

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