Oxalobacter
Encyclopedia
Oxalobacter is a genus of bacteria
Bacteria
Bacteria are a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a wide range of shapes, ranging from spheres to rods and spirals...

 in the Oxalobacteraceae
Oxalobacteraceae
The Oxalobacteraceae are a family of bacteria, included in the order Burkholderiales. Like all Proteobacteria, Oxalobacteraceae are gram-negative. The Family includes strict aerobes, strict anaerobes, and also nitrogen-fixing members....

 family. The species are chemoorganotroph
Chemoorganotroph
Chemoorganotrophs are organisms which use organic compounds as their energy source. These organic chemicals include glucose and acetate. All animals are chemoorganotrophs, as are fungi, protozoa, and some bacteria. Indeed, most heterotrophs are chemoorganotrophs. However, chemolithotrophs instead...

 and strictly anaerobic
Anaerobic organism
An anaerobic organism or anaerobe is any organism that does not require oxygen for growth. It could possibly react negatively and may even die if oxygen is present...

. They are found in rumens of animals like cattles and in fecal of other animals and humans. Some are marine and some have been isolated from freshwater.
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