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Amino acid comparison for the predicted Blp precursors with a typical Gly-Gly motif. Identical amino acid residues are shown in bold, while less conserved residues are shaded within the leader peptide. Note the high content of glycine and alanine residues of the expected processed forms. Below BlpJ and BlpI are compared with the components of the two-component thermophilin 13, a pore-forming bacteriocin produced by S. thermophilus (25). Conserved residues are shaded in gray.
