Amino acid alignment of the ES4326 protein with ς54 from diverse bacterial species. The sequences are listed in decreasing order of conservation with ς54 from P. syringae pv. maculicola. (P_Syr). Abbreviations and references: P_Put, Pseudomonas putida (30); P_Aer, Pseudomonas aeruginosa (33); A_Vin, Azotobacter vinelandii (53); S_Typ, Salmonella enterica serovar Typhimurium (66); E_Col, Escherichia coli (28). Shading: black, conserved amino acids; gray, conservative substitutions.