FIG. 2.

(A) Amino acid sequence of the MapA protein. (B) Truncated peptides of MapA, whose molecular weights (MW) matched well with the molecular masses of the purified peptides determined by mass spectrometry. MapA (accession no. AJ293860) is a mucus adhesion protein (263 aa) containing a sec leader sequence (underlined). Note that all truncated peptides have a common N terminus, but each has a different C terminus. Bold letters indicate the sequence determined by chemical sequencing of purified peptides.