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Table 5 Enzyme properties involved in the sulfur oxidation of A. thiooxidans

From: Whole-genome sequencing reveals novel insights into sulfur oxidation in the extremophile Acidithiobacillus thiooxidans

Abbreviation Enzyme name No. of enzyme Position Reaction
SDO Sulfur dioxygenase EC 1.13.11.18 Periplasm S0 → SO3 2−
SQR Sulfide quinone reductase EC 1.8.5.4 Inner Membrane H2S → S0
TQO Thiosulfate:quinone oxidoreductase EC 1.8.5.2 Inner Membrane S2O3 2− → S4O6 2−
TetH Tetrathionate hydrolase   Periplasm S4O6 2− → S2O3 2− + SO4 2− + S0
Sox Sulfur oxidizing protein   Periplasm S2O3 2− → SO4 2− + S0
HDR Heterodisulfide reductase   Cytoplasm RSSH → RSH + SO3 2−
SOR Sulfur oxygenase reductase EC 1.13.11.55 Cytoplasm S0 → H2S + SO3 2− + S2O3 2−
TST Thiosulfate sulfurtransferase EC 2.8.1.1 Cytoplasm S2O3 2− → SO3 2− + S0
PAPS reductase Phosphoadenosine phosphosulfate reductase EC 1.8.4.8 Cytoplasm SO3 2− → PAPS
APS kinase Adenylylsulfate kinase EC 2.7.1.25 Cytoplasm PAPS → APS