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Overview

StatusReference proteome
Proteins3,127
Proteome IDiUP000006637
Taxonomy266117 - Rubrobacter xylanophilus (strain DSM 9941 / NBRC 16129)
StrainDSM 9941 / NBRC 16129
Last modifiedFebruary 27, 2018
Genome assembly and annotationi GCA_000014185.1 from ENA/EMBL

The first strain of the genus Rubrobacter was isolated from gamma-irradiated hot spring water samples. This organism was found to be extremely gamma-radiation resistant, with a higher shoulder dose than the canonical radiation resistant species of the genus Deinococcus. The organism stained Gram-positive and was slightly thermophilic with an optimum growth temperature of about 45 degrees C. Several years later a single strain isolated from a hot runoff of a carpet factory in the United Kingdom was identified as a new species of the genus Rubrobacter and was named R. xylanophilus. This organism, however, had an optimum growth temperature of about 60 degrees C, and was a true thermophile. At that time only one strain of each species was known but, soon afterwards a large number of isolates of R. radiotolerans and R. xylanophilus were recovered, after gamma-irradiation of the samples from hot spring water in Sao Pedro do Sul in Central Portugal. The two species of the genus Rubrobacter represent the oldest lineage (deepest branch) of the Actinobacteria (High G+C Gram-positive bacteria) and are distantly related to several bacteria of medical importance, namely the species of Mycobacterium and the important antibiotic producers of the order Streptomycetales. Some strains of R. xylanophilus are capable of degrading hemicellulose and xylan, and could play a significant role in the environmental degradation of this material. Even though the species of Rubrobacter have only been isolated from thermal environments, it is unlikely that they are restricted to these environments. It is now known that the DNA of species of Rubrobacter (along with species of Deinococcus) is frequently cloned from desert soils where these organisms may be very abundant. These organisms could, therefore, survive for long periods of time in desert soils, and grow during sporadic rainy periods. Very little research has been done on these organisms and little is known other than their taxonomic characterization.

Componentsi

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Component nameGenome Accession(s)
Proteins
Chromosome3127

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