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Int J Syst Evol Microbiol. 2013 Jul;63(Pt 7):2642-8. doi: 10.1099/ijs.0.045344-0. Epub 2013 Jan 4.

Parvibacter caecicola gen. nov., sp. nov., a bacterium of the family Coriobacteriaceae isolated from the caecum of a mouse.

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Biofunctionality Unit, ZIEL - Research Center for Nutrition and Food Sciences, TU M√ľnchen, Freising-Weihenstephan, Germany.


A single strain, NR06(T), was isolated from the intestine of a TNF(deltaARE) mouse. Based on phylogenetic analysis of partial 16S rRNA gene sequences, strain NR06(T) belongs in the family Coriobacteriaceae within the Actinobacteria. The most closely related species with validly published names are members of the genera Adlercreutzia, Asaccharobacter and Enterorhabdus (<96 % sequence similarity). Strain NR06(T) was characterized by a high prevalence of monomethylmenaquinone-6 (MMK-6; 76 %) and the presence of meso-diaminopimelic acid in the cell wall. One of the major cellular fatty acids of strain NR06(T) was C15 : 0 ISO. Glucose was detected as a whole cell sugar. Strain NR06(T) was resistant to the antibiotic colistin and was positive for arginine and leucine arylamidase activity. Based on these characteristics, strain NR06(T) differed from related described bacteria. Therefore, the name Parvibacter caecicola gen. nov., sp. nov. is proposed to accommodate the novel bacterium. The type strain of the type species is NR06(T) ( = DSM 22242(T) = CCUG 57646(T)).

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