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      Anaerostipes rhamnosivorans sp. nov., a human intestinal, butyrate-forming bacterium.

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          Abstract

          A novel butyrate-producing bacterium, strain 1y-2(T), was isolated from a stool sample of a 1-year-old, healthy Dutch infant. The isolate was obtained by using lactate and acetate as sources of carbon and energy. The strain was Gram-variable, strictly anaerobic and spore-forming and formed curly rod-shaped cells that fermented glucose into butyrate, lactate, formate and acetate as main products. The DNA G+C content of the strain was 44.5 mol% and its major cellular fatty acids were C12:0, iso-C19:1 I and C16:0. Strain 1y-2(T) was related to Anaerostipes caccae DSM 14662(T) based on 16S rRNA gene sequence analysis, with 3% divergence, but hybridization studies of their genomic DNA revealed only 33% relatedness. Moreover, strain 1y-2(T) showed marked physiological and biochemical differences from known species of the genus Anaerostipes. Based on phylogenetic, chemotypic and phenotypic criteria, we propose that strain 1y-2(T) should be classified in the genus Anaerostipes within a novel species, Anaerostipes rhamnosivorans sp. nov. The type strain is 1y-2(T) ( = DSM 26241(T) = KCTC 15316(T)).

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          Author and article information

          Journal
          Int. J. Syst. Evol. Microbiol.
          International journal of systematic and evolutionary microbiology
          1466-5034
          1466-5026
          Mar 2014
          : 64
          : Pt 3
          Affiliations
          [1 ] Laboratory of Microbiology, Wageningen University, Dreijenplein 10, 6703 HB Wageningen, The Netherlands.
          Article
          ijs.0.055061-0
          10.1099/ijs.0.055061-0
          24215821

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