General Information: Thiosulfate oxidation. Acidophilic, aerobic, anoxygenic, phototrophic, Gram-negative bacterium isolated from pyritic acid mine drainage. A.multivorum has high ability of resistance to various metals under acidic condition, and require high acidity for growth. It exhibits tolerance towards some heavy metal ions like nickel, zinc, cadmium and copper, and resistance to arsenate and arsenite.