Alicyclobacillus disulfidooxidans

Alicyclobacillus disulfidooxidans (formerly "Sulfobacillus disulfidooxidansis") a species of Gram positive, strictly aerobic, bacterium. The bacteria are acidophilic and produced endospores. It was first isolated from waterwater sludge in Blake Lake City, Quebec, Canada. The species was first identified in 1996, but was classified as "Sulfobacillus disulfidooxidansis". It was reclassified as "Alicyclobacillus" in 2005. The name is derived from the Latin "duplus" (double), "sulfur" (sulfur), and "oxido" (oxidize), referring to the bacterium's ability to oxidize disulfide.
"A. disulfidooxidans" was reclassified to "Alicyclobacillus" along with a strain of "Sulfobacillus thermosulfidooxidans" subsp. "thermotolerans", which was classified as "Alicyclobacillus tolerans".
The optimum growth temperature for "A. disulfidooxidans" is 35 °C, and can grow in the 4-40 °C range. The optimum pH is 1.5-2.5, and can grow in pH 0.5-6.0.