Picrophilus is a genus of archaeans in the family Picrophilaceae.
Picrophilus is an extremely acidophilic genus within Euryarchaeota. These microbes are the most acidophilic organisms currently known,C.Michael Hogan. 2010. Extremophile. eds. E.Monosson and C.Cleveland. Encyclopedia of Earth. National Council for Science and the Environment, Washington DC. with the ability to grow at a pH of less than 0.5.Life in the Universe: Expectations and Constraints They were first isolated from samples taken from acidic hot springs and dry hot soil in Hokkaido (Japan). They are obligate acidophiles and are unable to maintain their membrane integrity at pH values above 4. While phylogenetically related to other organisms within Thermoplasmata, unlike Thermoplasma and Ferroplasma, Picrophilus contains an S-layer cell wall.
Phylogeny The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI).
16S rRNA based LTP_07_2026 53 marker proteins based GTDB 11-RS232
See also List of Archaea genera
References
Further reading
External links Picrophilus at Lifemap NCBI Version Picrophilaceae at OneZoom Picrophilus at LifeGate