Multiple sequence alignment of the ERF protein superfamily. The coloring reflects the amino acid conservation at 85% consensus. The coloring scheme and secondary structure assignment abbreviations are as in Fig. 1. Species abbreviations are as follows: Bbcp32-4: Borrelia burgdorferi cicular plasmid (cp) 32-4, Bbcp32-7: B. burgdorferi cp 32-7, Bbcp32-8: B. burgdorferi cp 32-8, Bbcp8.3: B. burgdorferi cp 8.3, Bbcp9: B burgdorferi cp 9, bIL67: bacteriophage IL67, c2: Lactococcus phage c2, D3: Pseudomonas phage D3, HK97: bacteriophage HK97, Lj771: Lactobacillus johnsonii prophage Lj771, Lm: Listeria monocytogenes, MM1: Streptococcus pneumoniae bacteriophage MM1, BPmv4: Bacteriophage mv4, P22: Bacteriophage P22, phiPV83: Bacteriophage φPV83, phiSLT: Staphylococcus aureus temperate phage φSLT, ST7201: Streptococcus thermophilus bacteriophage 7201, Unk: Unknown.