Gordonibacter faecihominis sp. nov., isolated from human faeces

Abstract

A novel actinobacterial strain, designated CAT-2T, was isolated from human faeces as a bacterium capable of dehydroxylating (+)-catechin derivatives. Strain CAT-2T was found to be strictly anaerobic, Gram-positive, non-motile and non-spore-forming coccobacilli. The major fatty acids were identified as C16:0 DMA (dimethy acetal), C16:0, C14:0, anteiso-C15:0 and iso-C14:0. The three predominant menaquinones were identified as MK-6 (menaquinene-6), MMK-6 (monomethylmenaquinone-6) and DMMK-6 (dimethylmenaquinone-6). The polar lipids were found to be diphosphatidylglycerol, phosphatidylglycerol and four unidentified glycolipid. The DNA G+C content of strain CAT-2T was 68.4 mol%. Phylogenetic analysis based on 16S rRNA gene sequence similarities showed that strain CAT-2T belongs to the genus Gordonibacter, sharing the highest level of sequence homology with Gordonibacter pamelaeae DSM 19378T (97.3 %). Combined phenotypic, chemotaxonomic and phylogenetic characteristics support the conclusion that the strain CAT-2T represents a novel species, for which the name Gordonibacter faecihominis sp. nov. is proposed. The type strain is CAT-2T (= KCTC 15204T = JCM 16058T).

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Acknowledgments

This work was supported by the Global R&D Center (GRDC) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (MSIFP) of the Republic of Korea, by the Bio and Medical Technology Development Program of the NRF funded by the MSIFP of the Republic of Korea, by the KRIBB Research Initiative Program and by the research funds of Chonbuk National University in 2013. I thank Professor J. P. Euzeby for his advice in naming the novel strain.

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Correspondence to Jung-Sook Lee.

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The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of Gordonibacter faecihominis CAT-2T is KF785806.

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Jin, JS., Lee, K.C., Park, IS. et al. Gordonibacter faecihominis sp. nov., isolated from human faeces. Antonie van Leeuwenhoek 106, 439–447 (2014). https://doi.org/10.1007/s10482-014-0212-6

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Keywords

  • Gordonibacter faecihominis sp. nov.
  • Actinobacteria
  • Taxonomy