Fig 2.

Phylogenetic analysis. (A) Tree of the 50 nonredundant protein sequences most identical to alanine racemase/Alr. (B) Tree of the annotated DadX and Alr from the sequenced genomes in the Pseudomonas Genome Database. Distance bars represent the expected proportion of substitutions per amino acid site. (C) Genomic synteny analysis on regions bordering the alr gene from Pseudomonas putida KT2440 (from the top, listed descending: P. aeruginosa PAO1, P. protegens Pf-5, P. putida KT2440, and P. putida GB-1). Gene annotations are based on the Pseudomonas Genome Database. The H bracket shows the actual DNA length. The gradient scale provides the percent identity for the genomic loci.