FIG. 2.

EPA gene cluster analysis. (A) The organizations of EPA gene clusters in all sequenced Shewanella strains are shown. Open reading frames (ORFs) are represented by arrows oriented in the direction of transcription. The putative gene product of each ORF is shown. The black arrows represent the ORFs essential for EPA synthesis, and the white arrows represent the ORFs that are not required. The dashed lines indicate different distances in different strains. (B) Comparison of enzyme domains within intact and separated pfaA gene products. CoA, coenzyme A. (C) EPA and its gene clusters in sequenced Shewanella strains.