''Coprothermobacter proteolyticus'', formerly ''Thermobacteroides proteolyticus'', is a

thermophilic A thermophile is an organism—a type of extremophile—that thrives at relatively high temperatures, between . Many thermophiles are archaea, though they can be bacteria or fungi. Thermophilic eubacteria are suggested to have been among the earl ...

, non- spore-forming bacteria. ''Coprothermobacter proteolyticus'' was originally isolated from a

thermophilic digester A thermophilic digester or thermophilic biodigester is a kind of biodigester that operates in temperatures above 50 °C (122 °F) producing biogas. It has some advantages: it does not need agitation and is faster in fermentation than a mesophilic ...

that was fermenting tannery wastes and cattle

manure Manure is organic matter that is used as organic fertilizer in agriculture. Most manure consists of animal feces; other sources include compost and green manure. Manures contribute to the Soil fertility, fertility of soil by adding organic ma ...

. These bacteria are rod-shaped and stain

Gram-negative Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. They are characterized by their cell envelopes, which are composed of a thin peptidoglycan cell wa ...

, although the cell structure is Gram-positive. The growth range is 35 to 75 °C and pH 5.5 to 8.5, with the optimum growth conditions of 63 °C at pH 7.5. The species uses sugars poorly unless yeast extract and either rumen fluid or Tripticase peptone are available.Bernard M. Ollivier, Robert A. Mah, Thomas J. Ferguson, David R. Boone, J.L. Garcia, and Ralph Robinson. Emendation of the Genus ''Thermobacteroides'': ''Thermobacteroides proteolyticus'' sp. nov., a Proteolytic Acetogen from a Methanogenic Enrichment. ''International Journal of Systematic Bacteriology.'' October 1985 vol. 35 no. 4 425-428 doi: 10.1099/00207713-35-4-425 The bacteria was previously classified as ''Thermobacteroides proteolyticus'' until further study led researchers to propose a new genus, ''

Coprothermobacter ''Coprothermobacter'' is a genus of rod-shaped microorganisms, belonging to the new bacterial family ''Coprothermobacteraceae'' of the new phylum ''Coprothermobacterota''. This taxonomic genus has been reclassified in 2018, after different phylog ...

'', for this microorganism. The new genus refers to the fact that this microorganism was originally isolated from manure and for its thermophilic qualities.Fred A. Rainey and Erko Stackebrandt. Transfer of the Type Species of the Genus Thermobacteroides to the Genus Thermoanaerobacter as Thermoanaerobacter acetoethylicus(Ben-Bassat and Zeikus 1981) comb. nov., Description of Coprothermobacter gen. nov., and Reclassification of Thermobacteroides proteolyticus as Coprothermobacter proteolyticus(Ollivier et al. 1985) comb. nov. International Journal of Systematic Bacteriology. October 1993 vol. 43 no. 4 857-859. doi: 10.1099/00207713-43-4-857

References

{{Taxonbar, from=Q3693225 Coprothermobacterota Thermophiles Anaerobes Bacteria described in 1985