Figure 2.

Phylograms of SelA, SelB, and FdhA sequences from Alphaproteobacteria, Betaproteobacteria, and Gammaproteobacteria. Organisms and phyla are shown by different colors. Red indicates Alphaproteobacteria, blue indicates Betaproteobacteria, green indicates Gammaproteobacteria/Pseudomonadales, and pink indicates other Gammaproteobacteria. In the FdhA phylogram, U represents Sec-containing sequences and C Cys-containing sequences.

Zhang et al. Genome Biology 2006 7:R94   doi:10.1186/gb-2006-7-10-r94
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