Additional file 1.

Multiple sequence alignment of core regions of proteins from both the PepI/R/L and EstA families. A manually curated multiple sequence alignment of the concatenated sequences of the four core regions of the PepI/PepR/PepL and EstA superfamily members identified by the protein structure superposition. On basis of this MSA, a family tree was constructed, and is shown in Figure 5.

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Liu et al. BMC Genomics 2010 11:36   doi:10.1186/1471-2164-11-36