Oxalobacter aliiformigenes

Oxalobacter aliiformigenes is a Gram negative, non-spore-forming, oxalate-degrading anaerobic bacterium that was first isolated from human fecal samples. O. aliiformigenes consumes oxalate as its main carbon source but is negative for indole production and negative for sulfate and nitrate reduction. Cells appear rod shaped, though occasionally present as curved, and do not possess flagella.

O. aliiformigenes is found in the gastrointestinal tract of humans, and is typically isolated from human feces. O. aliiformigenes is believed to have roles in mitigating calcium oxalate kidney stone disease and primary hyperoxaluria because of its unique ability to utilize oxalate as its primary carbon source and prevent absorption of oxalate.