FIGURE 5.

Organization of genes in mmgABC operon harboring icmF gene. Top, A. flavithermus; middle, B. megaterium; bottom, B. brevis. The following genes are found in the same operon with icmF: tetR (TetR/Acr-like family transcriptional regulator), acdA (acyl-CoA dehydrogenase), mmgA (acetyl-CoA transferase), mmgB (3-OH-butyryl-CoA dehydrogenase), mmgC (acetyl-CoA dehydrogenase), and fadF (medium-/long-chain fatty acyl-CoA dehydrogenase). rpoE gene, which encodes the σ subunit of RNA polymerase, is found just downstream of icmF. The numbers below the genes indicate the distance in nucleotides between two adjacent genes. Negative numbers indicate overlapping genes. For a complete list of bacteria showing similar operonic organization, see the text.