Parallel Evolution and Horizontal Gene Transfer of the pst Operon in Firmicutes from Oligotrophic Environments
Figure 4
Conserved motifs of the PstS protein for both cereus-like and subtilis-like operons. Red stars on top of residues on motif 2 indicate the binding site of phosphate. Motifs 4 and 5 are aligned (black lines) to show homologous amino acid positions. The height of the blocks is proportional to the -value of each motif. Motif 3 for subtilis-like PstS has an -value .
