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Alignment of NcaAI and NcaAII amino acid sequences. The amino acid sequences of the NcaA proteins from 35000HP and CIP 542 ATCC are compared. Boxed, shaded residues indicate identity. The predicted signal peptidase I cleavage site for 35000HP and CIP 542 ATCC is indicated by the inverted triangle. The segment encompassed by the two arrows represents the N-terminal region of recombinant NcaAI from 35000HP that was used for antibody production.
