''Sulfurisphaera'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of the
Sulfolobaceae
Sulfolobaceae are a family of the Sulfolobales belonging to the domain Archaea. The family consists of several genera adapted to survive environmental niches with extreme temperature and low pH conditions.
Ecology
''Sulfolobaceae'' species are ...
.
Description and significance
''Sulfurisphaera'' is a facultatively anaerobic, thermophilic, Gram-negative archaeon that occurs in acidic solfataric fields. The organism grows under the temperature range of 63–92 °C with the optimum temperature at 84 °C, and under the pH range of 1.0–5.0, with an optimum of pH 2.0. It forms colonies that are smooth, roundly convex, and slightly yellow.
Genome structure
The genome of ''Sulfurisphaera'' is yet to be sequenced. The G + C content is estimated to be 30–33%.
Cell structure and metabolism
The spherical cells of ''Sulfurisphaera ohwakuensis'' are 1.2–1.5 µm in diameter. Thin sections of the organism reveal an envelope (approx. 24 nm) surrounding the cell membrane. It grows organotrophically on proteinaceous, complex substrates such as yeast extract, peptone, and tryptone. Growth was not observed on single sugars or amino acids such as D-glucose, D-galactose, D-fructose, D-xylose, lactose, maltose, sucrose, alanine, glutamate, glycine, and histidine.
Ecology
The strains of ''Sulfurisphaera ohwakuensis'' were isolated from multiple locations in the acidic hot springs in Ohwaku Valley,
Hakone
is a List of towns in Japan, town in Kanagawa Prefecture, Japan. , the town had a population of 11,293 and a population density of 122 persons per km². The total area of the town is . The town is a popular tourist destination due to its many o ...
, Japan.
[See the ]NCBI
The National Center for Biotechnology Information (NCBI) is part of the United States National Library of Medicine (NLM), a branch of the National Institutes of Health (NIH). It is approved and funded by the government of the United States. The ...
br>webpage on Sulfurisphaera
Data extracted from the
References
Further reading
Scientific journals
*
*
Scientific books
*
External links
''Sulfurisphaera'' at Bac''Dive'' - the Bacterial Diversity Metadatabase
Archaea genera
Thermoproteota
{{archaea-stub