Figure 1From: A DNA element recognised by the molybdenum-responsive transcription factor ModE is conserved in Proteobacteria, green sulphur bacteria and ArchaeaAlignment of the helix-turn-helix (HTH) domains homologous to the molybdenum-responsive transcriptional regulator ModE. Amino acid residues predicted to directly interact with the target DNA are marked with asterisks (*). The alignment was taken from the Pfam database http://www.sanger.ac.uk/Software/Pfam/.Back to article page