Figure 1.

A pelX homologous gene is found adjacent to pel biosynthetic gene clusters in three different arrangements. Each gene is shown as an arrow, where each arrow indicates the direction of transcription. The predicted function of each gene is indicated by its color as per the legend (bottom). One representative bacterial species is shown per gene arrangement. The total number of species identified with each arrangement is indicated (right). The full list of species with pelX-containing pel loci can be found in Dataset S1.