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Comparison of aromatic amino-acid placement (red rectangles) within mature pilin protein sequences of G. sulfurreducens, G. metallireducens, F. sinusarabici, C. nitroreducens, D. alkaliphilus, S. oneidensis, P. aeruginosa, G. uraniireducens and Candidatus Desulfofervidus auxilii. Also shown are the total number of amino acids, the number of aromatic amino acids and the percentage of total amino acids that are aromatic.
