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. 2013 Dec 5;8(12):e82705. doi: 10.1371/journal.pone.0082705

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© 2013 Sánchez-Carrón et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The figure shows a representative Tree of Life based on 16S rRNA. Species of Kingdom Eukarya are coloured red, those of Kingdom Archaea are coloured yellow and those of Kingdom Bacteria are coloured blue. The box next to each species represent the absence of OiPncC (purple), the presence of the functional one-domain enzyme (green) or the presence of a functional two-domain enzyme (orange) in the organism. The image was generated with iTOL [31]. .