FIG. 2.
BOXSHADE of a PILEUP performed in the GCG DNA analysis package with MsbA protein sequences from E. coli (Ecoli) and H. influenzae (Hin) and the proposed homolog from B. pertussis (BP536). The black shading surrounds blocks of amino acids which are identical, and the grey shading surrounds blocks with conservative substitutions. The B. pertussis sequence is shown as starting with a leucine residue since it has TTG as a start codon. This sequence is truncated at the position of the SacI site where the DNA sequence published here starts. Only the parts of the E. coli and H. influenzae sequences corresponding to the truncated B. pertussis sequence are shown.