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. 2015 Sep 14;10:49. doi: 10.1186/s13062-015-0080-7

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© Verma et al. 2015

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — Phylogenetic tree of gamma-glutamyl transpeptidase family. Phylogenetic trees of gamma-glutamyl transpeptidase family were made based on NJ and ML analysis. Major groups of GGT-family resolved in two main branches B1 and B2, further divided into six clades: Eukaryotes, Bacteria (1, 2 and 3), Archaea and Bacteria 4 extremophiles. The eukaryotes and bacteria 1 clade, are further divided into 3 and 2 subfamilies respectively. Further, the same tree is separated into two major groups; ggt ^Lid+: GGT sequences containing lid-loop regions and ggt ^Lid-: GGT sequences not containing lid-loop regions. The final log likelihood of the ML tree is -21446.23 and the gamma shape parameter is 1.46