FIG 2.

SfbR and SfbR2 phylogenetic tree. Homologues used for phylogenetic analyses were chosen randomly among those that were well characterized and belonged to representative Streptomyces species. The tree was constructed using the neighbor-joining method. NCBI accession numbers are indicated between brackets, and calculated pI values are shown between square brackets. Proteins that showed atypical pI values are in red. The reliability of each node was analyzed by the bootstrap test with 1,000 replicates, and the percentage obtained is indicated. The bar indicates 0.1 substitution per amino acid position.