Figure 4.

Phylogenetic tree of LuxS proteins from the completely sequenced genomes (138; July 2003) in the KEGG genome database. The tree was constructed using the neighbour-joining (NJ) method after alignment of orthologous genes by means of Vector NTI Advance (InforMax, United States).

Sun et al. BMC Evolutionary Biology 2004 4:36   doi:10.1186/1471-2148-4-36
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