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Reclassification of Catabacter hongkongensis as Christensenella hongkongensis comb.nov. based on whole genome analysis

Xiaoying Liu, Jessica L. Sutter, Jacobo de la Cuesta-Zuluaga, Jillian L. Waters, Nicholas D. Youngblut, Ruth E. Ley
doi: https://doi.org/10.1101/2020.09.21.306662
Xiaoying Liu
Department of Microbiome Science, Max Planck Institute for Developmental Biology, Max-Planck-Ring 5, 72076 Tübingen, Germany
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Jessica L. Sutter
Department of Microbiome Science, Max Planck Institute for Developmental Biology, Max-Planck-Ring 5, 72076 Tübingen, Germany
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Jacobo de la Cuesta-Zuluaga
Department of Microbiome Science, Max Planck Institute for Developmental Biology, Max-Planck-Ring 5, 72076 Tübingen, Germany
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Jillian L. Waters
Department of Microbiome Science, Max Planck Institute for Developmental Biology, Max-Planck-Ring 5, 72076 Tübingen, Germany
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Nicholas D. Youngblut
Department of Microbiome Science, Max Planck Institute for Developmental Biology, Max-Planck-Ring 5, 72076 Tübingen, Germany
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Ruth E. Ley
Department of Microbiome Science, Max Planck Institute for Developmental Biology, Max-Planck-Ring 5, 72076 Tübingen, Germany
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  • For correspondence: rley@tuebingen.mpg.de
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Abstract

The genera Catabacter (family Catabacteraceae) and Christensenella (family Christensenellaceae) are close relatives within the phylum Firmicutes. Members of these genera are strictly anaerobic, non-spore forming, short straight rods with diverse phenotypes. Phylogenetic analysis of 16S rRNA genes suggest that Catabacter splits Christensenella into a polyphyletic clade. In an effort to ensure that family/genus names represent monophyletic clades, we performed a whole-genome based analysis of the genomes available for the cultured representatives of these genera: four species of Christensenella and two strains of Catabacter hongkongensis. A concatenated alignment of 135 shared protein sequences indicates that C. hongkongensis is indeed nested within the Christensenella clade. Based on their evolutionary relationship, we propose the transfer of Catabacter hongkongensis to the new genus as Christensenella hongkongensis comb.nov.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC 4.0 International license.
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Posted September 21, 2020.
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Reclassification of Catabacter hongkongensis as Christensenella hongkongensis comb.nov. based on whole genome analysis
Xiaoying Liu, Jessica L. Sutter, Jacobo de la Cuesta-Zuluaga, Jillian L. Waters, Nicholas D. Youngblut, Ruth E. Ley
bioRxiv 2020.09.21.306662; doi: https://doi.org/10.1101/2020.09.21.306662
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Reclassification of Catabacter hongkongensis as Christensenella hongkongensis comb.nov. based on whole genome analysis
Xiaoying Liu, Jessica L. Sutter, Jacobo de la Cuesta-Zuluaga, Jillian L. Waters, Nicholas D. Youngblut, Ruth E. Ley
bioRxiv 2020.09.21.306662; doi: https://doi.org/10.1101/2020.09.21.306662

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