FIG. 1.

Fructose transport genes. (A) The region of the chromosome of A. variabilis with the fructose transport genes, namely, frtR (ava2170), encoding a putative lacI-like transcriptional regulator, and frtABC (ava2171 to -2173), encoding a putative periplasmic binding component, ATPase component, and transmembrane component, respectively. (B) Alignment of the promoter region of hrmE of N. punctiforme with a conserved region of the frtA promoter region, beginning about 300 bp upstream from the start codon of frtA. The transcription start site of hrmE is indicated by an arrow, and the −10 and −35 regions of the hrmE promoter are labeled. The HrmR binding sites, which are underlined, are shown within boxes that indicate longer conserved palindromic sequences.