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The motif of (GAA)n flanking sequences in vlhA promoters. Logos show identity of motifs for promoters with different GAA number. Sequences 50 bp length were aligned by T-coffee program, gaps included in the alignment. Logo constructed by WebLogo 3.6.0; (A,B) logos for upstream flanks, (C,D) logos for downstream flanks; (A,C) logos of 22 sequences of 12-GAA promoters; (B,D) logos of 344 non-12-GAA promoters.
