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Alignment of the eight different nucleotide sequences (NS) as found in the galR-galK intergenic region of 49 wild-type S. thermophilus strains. The intergenic region contains the promoter sequences for the galR and the gal genes. The promoter regions are defined according to Vaughan et al. (30). The −10 and −35 regions are underlined, and the transcriptional start sites are indicated at +1.
