Additional file 4.

Unrooted ML tree of the GrpE protein (101 sequences and 105 positions) inferred with TreeFinder and the LG + Γ4. Numbers at nodes represent bootstrap values and Bayesian posterior probabilities computed with TreeFinder and MrBayes, respectively (only values >50% and 0.5 are shown, dashes indicate the corresponding value is inferior to the threshold, whereas when both supports are inferior to the thresholds no support values are indicated). Archaeal sequences are shown with colours according to their taxonomic classification. The scale bar represents the average number of substitutions per site.

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Petitjean et al. BMC Evolutionary Biology 2012 12:226   doi:10.1186/1471-2148-12-226